Some water-deficient areas have tried to use salt water irrigation, but crops are prone to salt stress. In order to find out the alleviating effect of biochar, in this paper, the experimental method of barrel cultivation of corn under shelter was adopted, through soil column test, with the amount of biochar application and mineral content of irrigation salt water as the main regulating factors, three gradients of biochar application rates of 0%, 2% and 5% and four irrigation water salinity levels of fresh water, 4 g/L, 5 g/L and 6 g/L were set to systematically study the effects of different biochar application rates on soil conductivity (EC), maize morphological indices, physiological indices, yield and water use efficiency (WUE) under salt stress.The results showed that : Soil EC value increased under salt water, and biochar could effectively alleviate the effect of salt water on soil EC value, among which 2% biochar had the most significant alleviating effect. Salt water irrigation could reduce maize plant height, while biochar could increase maize plant height, which was beneficial to crop growth and development. Salt water irrigation could effectively increase maize leaf area, but biochar application had no significant effect on maize leaf area. High salinity salt water irrigation could damage crop roots, however, the root length, root surface area and root volume decreased first and then increased with the increase of biochar application at the same salinity under brackish water irrigation, suggesting that applying more biochar in brackish water irrigation could promote root growth and development. High salt stress could reduce chlorophyll content in leaves, when the salinity of irrigation water was the same, SPAD value of leaves only increased slightly with the increase of biochar application amount, and the effect of biochar was not significant. Salt water irrigation could reduce grain weight per plant, dry weight of aboveground and water use efficiency of maize, the application of biochar could effectively improve grain weight per plant and promote dry matter accumulation of maize, but the effect of biochar on WUE per plant was not significant. In general, when the salinity of irrigation water was high (5 g/L), the application of biochar could reduce the salt damage to crops and promoted their normal growth and development, which could be used as a means to alleviate the negative effects of salt water development and utilization.

In order to illustrate the internal effects of new root zone irrigation on grape root growth and yield in arid areas, with six-years seedless white grapes as the research object, four irrigation treatments were set (lower limit of irrigation was fixed at 60% of field capacity, upper limit of root-zone irrigation was 80% of field capacity (T1), 90% of field capacity (T2) and 100% of field capacity (T3), respectively, with the upper limit of furrow irrigation as 90% of field capacity as control CK), the changes of soil moisture, root growth parameters and yield in different growth stages were measured. The results showed that the water content of soil volume increased first and then decreased in the 0~100 cm soil layer, and the size relationship was T3 > T2 > T1. The water-absorbing roots were mainly distributed in the 20~80 cm soil layer, and the root length density and root surface area density increased first and then decreased with the increase of soil depth, which was T2 > T3 > T1 from large to small. The volumetric water content of CK decreased with the increase of soil depth. The water-absorbing roots were mainly distributed in 0~60 cm, and the root length density and root surface area density decreased with the increase of soil depth. The root length density and root surface area density were significantly affected by soil water content. When soil water content was less than 88.46% field water capacity, each index increased with the increase of soil water content. When soil water content was more than 88.46% field water capacity, each root index showed a trend of slow growth or decline. Under different irrigation schemes, the yield and fruit shape index of T2 treatment were the highest. Considering the factors of soil water distribution, root distribution, yield and fruit shape index comprehensively, root zone irrigation was more conducive to root deep digging than furrow irrigation. As the treatment with the best water-saving effect and the highest yield, T2 was the optimal irrigation scheme for grape planting in this year.

In order to explore the coordination relationship between agricultural water pollution and agricultural economy in the Yangtze River Economic Belt, the decoupling relationship between agricultural water pollution and economic development of 11 provinces and cities in the Yangtze River Economic Belt was analyzed based on the decoupling theory based on the calculation of agricultural grey water footprint from 2008 to 2019 and the characteristics of spatio-temporal structure change. Furthermore, a further LMDI decomposition model was built to explore the driving factors of the decoupling relationship. The results showed that: ①The agricultural grey water footprint increased first and then decreased, and agricultural water pollution was effectively controlled in recent years. ② The coordination between agricultural grey water footprint and economic growth changed into strong decoupling state, and the coordination degree between agricultural economy and agricultural water environment increased obviously.③Agricultural technology level and labor force size effect played a negative driving role, economic level effect plays a significant positive driving role, and industrial structure effect played a positive driving role. Relevant research results and policy suggestions were helpful for agricultural water pollution control in the Yangtze River Economic Belt to promote the coordinated development of regional water ecological environment and agricultural economy.

In order to scientifically analyze the formation mechanism of agricultural drought and reasonably guide the work of drought prevention and mitigation, aiming at the dynamic multi-attribute group decision-making problem of decision-making information grey and decision-making scheme uncertainty in agricultural drought emergency management, the three-parameter interval grey number was introduced to characterize it, and a three-parameter interval grey number dynamic multi-attribute group decision-making method based on 4-dimensional matrix and regret theory was proposed. Firstly, according to the risk preference psychology of decision makers, a 4-dimensional matrix was used to express the decision attribute value, and a regret euphoria function based on regret theory was proposed; secondly, a corresponding optimization model was constructed to solve the group decision weight, attribute weight and stage weight. Finally, it was applied to the emergency management of agricultural drought in Henan Province, and the grey target group decision-making method was used for comparative analysis. The results showed that the method in this paper involved fewer parameters in the decision-making of agricultural drought emergency management in Henan Province, it did not require the reference point and weight of the decision-maker, and the evaluation results were more objective. This method provides a theoretical reference for solving emergency management under grey information, and provides theoretical support for decision-making departments to optimize emergency management schemes.

In order to study the effect of “Geng Nong Anti drought treasure” on afforestation of trees and shrubs in arid area, a field experiment was carried out in Zhuoer Mountain of Qilian County. In this study, trees (Sabina Przewalskii and Picea Crassifolia), shrubs (Ribes odoratum and False spiraea) were selected as experimental species. Experimental group and control group were set respectively. Experimental group was shrub 8 grams per pit and tree 25 grams per pit “Geng Nong Anti drought treasure”. The control group was given natural conditions. The effects on soil water content, growth, chlorophyll and eight ions contents of native Ribes odoratum, False spiraea, Sabina przewalskii and Picea crassifolia were studied. The results showed that: ①The soil moisture content of experimental group was higher than that of control group, and the difference of soil moisture content of False spiraea, Ribes odoratum, Sabina przewalskii and Picea crassifolia were 2.33%, 3.62%, 2.33% and 2.94%, respectively. With the extension of time after irrigation, soil moisture content in experimental group was higher than that in control group.②The indexes of tree height, DBH, crown width, branches, new germination rate and growth amount of trees and shrubs in experimental group were better than those in control group.③The chlorophyll content of the experimental group was higher than that of the control group, and the range difference of Ribes odoratum, False spiraea, Sabina przewalskii and Picea crassifolia were 3.5, 1.1, 1.4 and 1.2.④“Geng Nong Anti drought treasure” damaged the damage of Cl- and K⁺+Na⁺ content to trees and shrubs, and promoted the growth of trees and shrubs. To sum up, "Geng Nong Anti drought treasure" improves the effect of afforestation and can be widely promoted in forestry, which is of great significance in afforestation.

Based on the integration of drip irrigation water and fertilizer, this paper aimed to study the effect of fulvic acid modifier on the physiological growth and yield quality of film-free drip irrigation cotton in different salinized soils. According to the three soil salt gradients of 1 000, 2 000 and 3 000 μS·cm^-1, fulvic acid treatment T1, T2 and T3 and control CK1, CK2 and CK3 were set through using pit test respectively. The results showed that the application of fulvic acid had an obvious effect on alleviating the salt damage of 0~30 cm soil and could significantly promote the growth of cotton stem diameter and plant height. After application of fulvic acid, the stem diameter of cotton treated with T1, T2 and T3 increased by 12.1%, 14.8% and 11.9%, and the plant height increased by 8.8%, 4.5% and 11.9%, compared with the control CK1, CK2 and CK3. The fulvic acid had significant effects on cotton photosynthetic indicators and dry matter accumulation aboveground. The dry matter mass of T1, T2 and T3 treatments increased by 15.1% and 1.21%, 6.8% and 10.34%, 13.8% and 3.91% compared with CK1, CK2 and CK3 at bud stage and blooming stage, respectively. Fulvic acid could improve cotton yield while improving the salinized soil. The yield of cotton seed treated with T1, T2 and T3 increased by 2.68%, 2.94%, and 5.32% over CK1, CK2 and CK3, respectively. It was preliminarily concluded that the application of appropriate amount of fulvic acid could reduce the soil salt content in southern Xinjiang, promote the growth and development of film-free drip irrigation cotton, and improve the yield.

In order to explore the law of rice water requirement under reclaimed water irrigation and the reclaimed water irrigation schedule, paddy field experiments were carried out at the National Agricultural Environment Dali Observation and Experimental Station in 2019. The experiment had five treatments (FIF1, FIF2, FIF3, AWDF1, AWDF2), and two irrigation modes of flooding irrigation (FI) and alternate wetting and drying (AWD) and three fertilization regimes of F1 (fresh water irrigation during the growth period + all chemical fertilizer), F2 (irrigation with reclaimed water at the tillering stage, jointing and booting stage + partial fertilizer application) and F3 (irrigation with reclaimed water at the returning green stage, tillering stage, and jointing and booting stage + partial fertilizer application) were set up. Rice water requirement (ET_c ), crop coefficient (K_c ), yield, irrigation water use efficiency indicators and their changes under different treatments were observed, and the irrigation regimes of different hydrological years were derived based on the meteorological data for 45 years from 1970 to 2014. The results showed that, reclaimed water irrigation increased ET_c at all rice fertility stages as a whole, and ET_c under AWD decreased by 18.8 mm on average compared with FI, which was a small difference. 573 mm of reclaimed water was irrigated in the F2 treatment, which was the most efficient use of reclaimed water. Rice was not suitable for reclaimed water irrigation at the early growth stage, and the trends of K_c and ET_c were the same in all rice fertility stages under reclaimed water irrigation. The water requirement of rice under reclaimed water irrigation showed a general trend of increasing and then decreasing, with the maximum at 198.6 mm at the stage of nodulation and gestation, and the peak period was shifted to the stage of nodulation and gestation compared with that of clear water irrigation. The AWD model generally had a good effect of saving clear water resources in different hydrological years of irrigation systems. The rate of replacing clear water with reclaimed water for irrigation could be as high as 75%, with AWD saving 45.6% of water compared to FI model. Irrigation with reclaimed water could increase yield to some extent, with F2 treatment increasing yield by 3% on average compared to F1.

In order to explore the waterlogging index of summer maize under the condition of shallow groundwater and the law of transpiration and water consumption under different conditions of waterlogging, in this study, the underground lysimeter of Wudaogou Hydrology and Water Resources Experimental Station was used to control the groundwater depth at three levels of 0.2, 0.4, 0.6, 0.8 and 1.0 m. The whole growth period of summer maize was tested from 2016 to 2021 and the relationship between the waterlogging index and the relative yield of summer maize under the stress of the whole growth period was quantified. The law of transpiration water consumption of summer maize under different waterlogging stress was characterized by growth water consumption and the water consumption characteristics of summer maize under different waterlogging conditions were explored. The results showed that different levels of groundwater had different effects on summer maize yield. When the groundwater depth was 0.6 m, it was the most suitable groundwater depth for maize growth, and when the groundwater depth was less than 0.6 m, maize yield decreased due to certain degree of waterlogging. The correlation between waterlogging indexes SEW and SDI and the relative yield of summer maize under the condition of 0.2 m underground water depth was the highest with R ² being 0.912 and 0.674, respectively. The transpiration water consumption of summer maize under shallow groundwater was closely related to precipitation. Too much precipitation would inhibit water consumption of summer maize, while too little precipitation would promote water consumption of summer maize. The difference of water consumption of summer maize under different groundwater depth was mainly in heading stage and mature stage of summer maize. When the precipitation condition changed, the water consumption law of summer maize under shallow groundwater changed greatly, and the waterlogging stress affected the water consumption characteristics of summer maize to a certain extent. Reasonable control of groundwater depth according to the precipitation situation was of great significance to increase the yield of summer maize.

The salinized soil in Hetao irrigated area of Inner Mongolia was selected as the research object. CK (control treatment), SAP + PAM (water retaining agent with soil structure conditioner treatment, DSP), SAP + BIC (water retaining agent with biochar treatment, DSB) , PAM + BIC (soil structure conditioner with biochar treatment, DPB) and SAP + PAM + BIC (water retaining agent + soil structure conditioner + biochar treatment, DSPB) were set respectively to study the effects of increased application of exogenous soil conditioner on soil bacterial community diversity in drip irrigation maize field by using high-throughput sequencing technology. The results showed that: ①Compared with DCK, DSB and DSPB treatments improved the soil bacterial community diversity index.②The application of exogenous soil conditioner could change the structural composition of soil bacterial community, and the dominant groups of soil bacteria were Proteobacteria and subgroup_ 6 genera in different treatments. Under drip irrigation, the relative abundance of beneficial bacteria such as Actinobacteria, Gemmatimondetes and Skermanella could be increased by each treatment inordinately, while the relative abundance of bacteria such as Acidobacteria and Subgroup_6 that were not suitable for growth in this area was decreased, especially DPB and DSPB treatment was particularly significant.③Different exogenous soil conditioners increased application significantly changed soil pH and conductivity, the hydrolyzed nitrogen content of DPB treatment increased significantly, but had no significant effect on other soil available nutrients. ④Redundancy analysis showed that pH and conductivity were the main environmental factors affecting soil bacterial community structure.⑤DPB treatment had the greatest effect on row number, bare tip length and threshing weight of maize, and played a certain role in improving maize yield, and Actinobacteria had a positive promoting effect on threshing weight of maize. In conclusion, DPB treatment had a good effect on improving soil bacterial community structure, chemical properties and maize yield under drip irrigation, which had important guidance and reference significance for the research of local agricultural water saving in terms of soil microorganisms.

In this paper, the standard k-ε turbulence model and Euler-Lagrange multiphase flow model were selected to study the anti-clog performance of labyrinth channel emitter by CFD numerical simulation. The flow channel of rectangular emitter was designed to add teeth, and the influence mechanism of the change of tooth width on the flow velocity distribution, vortex characteristics and particle trajectory in the flow channel was analyzed. The results show that low velocity region of the channel with 0.6 mm and 0.8 mm tooth width is less. The vortex distribution of the flow channel with the tooth width of 0.8 mm is less, and most of them are located at the right Angle corner of the two sides of the tooth, which has a good scouring effect on the flow channel wall in this area. By analyzing the trajectory of particles in the emitter, it can be found that when the tooth width is 0.8 mm, the trajectory of particles in the flow channel is more regular and the residence time is relatively shorter. The emitter particles with 0.4 mm tooth width are ' turned ' in the flow channel. In general, for the single internal tooth emitter with tooth height of 0.5 mm, the emitter with tooth width of 0.8 mm has better anti-clogging performance.

In order to explore the effects of fertilizer reduction combined with bio-organic fertilizer on growth characteristics, yield and quality of eggplant in Jingdian irrigated area, in this study, four different fertilization modes (A1B1 of 80% chemical fertilizer combined with bio-organic fertilizer 3 000 kg/hm², A1B2 of 80% Chemical fertilizer combined with bio-organic fertilizer 6 000 kg/hm², A2B1 of 70% chemical fertilizer combined with bio-organic fertilizer 3 000 kg/hm², A2B2 of 70% chemical fertilizer combined with bio-organic fertilizer 6 000 kg/hm²) were set with no fertilization (CK) and conventional fertilization (CF) as the control in Tiaoshan Farm of Yitiaoshan Town of Jingtai County. The results showed that the reduction of chemical fertilizer combined with bio-organic fertilizer could effectively improve the growth characteristics and physiological characteristics of eggplant, and under the same level of bio-organic fertilizer combination, the greater the reduction of chemical fertilizer, the more obvious the inhibition of crop growth. There were significant differences in the effects of different fertilization modes on photosynthetic characteristics, yield and quality of eggplant, among which, A1B2 treatment was the best, with stomatal conductance and net photosynthetic rate increased by 11.22% to 47.26% and 8.8% to 63.1%, respectively, compared with other treatments, and intercellular CO₂ concentration significantly decreased by 26.35% compared with CF. The yield of A1B1, A1B2, A2B1 and A2B2 was increased by 7.16%, 17.49%, 4.65% and 13.24%, respectively, compared with CF. The yield of A1B2 was the highest, up to 77 977.25 kg/hm², and the economic benefit of A1B2 was significantly increased by 17.78% compared with CF. The content of vitamin C, soluble protein and soluble sugar in eggplant fruits increased by 4.98%~10.95%, 1.08%~16.13% and 7.4%~27.68%, compared with CF, respectively, while the crude fiber decreased by 18.51%~66.67%. The grey correlation degree analysis of yield and quality indexes showed that A1B2 treatment has the best equal weight correlation degree, weight coefficient and weighted correlation value, and cluster analysis also showed that A1B2 treatment was the best fertilization mode. Therefore, A1B2 was the best fertilization mode in the planting process of eggplant in jingdian irrigation area, which could be popularized and applied in the local high-quality growth and planting of eggplant.

In nature, soil is mostly layered, which has an important influence on water and salt transport and vegetation growth. In order to study its effect and to understand the effective utilization of water by plants, the experiment of water and salt transport and the experiment of plant transpiration and evaporation were carried out under the condition of plant growth in laboratory with strong heterogeneous layered soil column (upper layer is loam and lower layer is river sand). The results show that in the water and salt transport experiment of strong heterogeneous layered soil column under plant growth condition in laboratory, when brine infiltration penetrates to the variation boundary of two layers, there will be a temporary stagnation, and the lower river sand has a certain permeability reduction effect, but because of the existence of finger flow, the change of volume water content fluctuates greatly. Salt migrates with the movement of water, and salt migration in the lower river sands is influenced by water flow and convection plays a dominant role. The coarse sand layer of layered soil column can prevent water movement in evaporation process. In the experiment of distinguishing plant transpiration and inter-plant evaporation, evapotranspiration will be inhibited when the total evapotranspiration reaches a certain value. This study provides data support for soil salinization prevention and salinization improvement.

Rice, as one of the first choice food, has attracted the attention of most people for its various qualities. In order to deeply understand the rice quality change under the influence of exogenous factors, this paper reviewed the progress and trends of research on the influence of different internal and external source factors on rice quality. On the basis of previous studies on the application effect of various measures to improve rice quality, this paper classifies, summarizes and summarizes the existing problems in rice quality research. The results showed that rice quality was affected by a series of internal and external factors, such as rice varieties, climate conditions, soil moisture conditions, nutrient conditions, soil salinization, cultivation techniques, irrigation methods and storage conditions. These factors had different effects on brown rice percentage, precision percentage, whole precision rate, straight-chain starch content, protein content, chalkiness, chalk grain rate and seed filling, thus affecting the milling quality, taste quality, physicochemical quality and appearance quality of rice, respectively. Finally, with a view to meeting the target requirements of high-yield, high-quality and efficient breeding and optimal cultivation of rice, in order to provide some theoretical basis for further research on improving rice quality in a multidisciplinary complex, this paper explored more potential research prospects for improving rice quality and provided an outlook on the future development of methods for improving rice quality.

The responses of photosynthetic parameters of citrus trees to water and meteorological factors under different water conditions were studied to provide reference for making appropriate irrigation decisions. In this study, the 7-year-old citrus trees in South China was selected as research objects and three different water treatments were set up at fruit maturity stage of citrus trees. Photosynthetic parameters, such as transpiration rate (Tr), net photosynthetic rate (Pn) and stomatal conductance (Gs), air temperature and humidity, soil water content and other environmental information of citrus trees were measured daily. The results showed that:①The variation trend of transpiration rate, net photosynthetic rate and stomatal conductance were consistent. When there was sufficient water, transpiration rate and stomatal conductance varied in roughly the same range, and transpiration rate had a strong dependence on the stomatal conductance. When water was insufficient, the dependence of transpiration rate and net photosynthetic rate on stomatal conductance decreased.②Under high water condition, photosynthetic active radiation was the main meteorological factor affecting transpiration rate and stomatal conductance, and the correlation between them was 0.590 and 0.470, respectively. Under medium water condition, air temperature was the main factor affecting leaf net photosynthetic rate, and the correlation reached 0.556. Under low water condition, air humidity mainly affected net photosynthetic rate and wind speed mainly affected stomatal conductance, and the correlation was 0.552 and 0.463, respectively. The results of this study can provide reference for citrus trees to take appropriate measures to improve water use efficiency under different water states.

With the continuous improvement of the demand for dynamic management and fine management of water resources, the accounting and analysis of farmland irrigation water use on an annual scale has been difficult to meet the management requirements at this stage, and the time scale of analysis and calculation needs to be further refined. Considering the complexity of farmland irrigation water in time and space, this study makes full use of the existing work basis. Based on the investigation and statistical data, such as the successive irrigation information of typical fields arranged for the calculation of the effective utilization coefficient of farmland irrigation water in China and the actual irrigation area of the region, and meteorological data, the monthly analysis and calculation method of farmland irrigation water use in different regions of the country (administrative division, water resources division or farmland irrigation division, excluding Hong Kong, Macao and Taiwan) was proposed, the analysis and calculation model was constructed. The farmland irrigation water consumption of different regions in China in 2020 is obtained.On this basis, the distribution law of farmland irrigation water use was analyzed. The results showed that, compared with the data from water Resources Bulletin, the water use of farmland irrigation in China in 2020 obtained by the analysis and calculation model was 347.80 billion m3, which was 8.12 billion m3 different from the data released by China Water Resources Bulletin, and 2.4% more overall. In the whole country, monthly irrigation water use increased first and then decreased. Affected by crop water demand and irrigation frequency, the irrigation water use in winter was the lowest, and the irrigation water use in summer and autumn was the highest. Moreover, the irrigation water use in different regions varied greatly in different months. In this study, a scientific and operable monthly scale analysis and calculation method of farmland irrigation water use was proposed for the first time, and the time scale of farmland irrigation water use analysis and calculation in different regions was refined to monthly. The analysis and calculation results can provide decision-making basis for formulating the optimal allocation scheme of regional water resources and the water distribution plan of farmland irrigation refinement.

The Yellow River water diversion project is an important part of the East Route of the South-to-North Water Diversion Project. It is a water conservancy project in Shandong Province to divert the Yellow River water to Qingdao, Weihai, Yantai and other places. Because of the complexity of the source water, the flexible impurities such as foam often make the exhaust valve corroded and blocked, resulting in long distance water delivery projects can not run normally. In this paper, two methods of numerical simulation and experimental observation were combined. The Fluent software was used to simulate the filter hole meridian, filter layer thickness and filter mesh type to analyze the treatment effect of the filter device. The simulation results were verified by physical model test, and the optimal filter structure was selected. The results show that when the filter aperture is 10 mm, the filter layer thickness is 5 mm, and the filter type is arc filter, the filtering effect is 100%, the blockage degree is 19%, and the maximum pressure inside the filter is 0.9 MPa. The results of physical model test are consistent with those of numerical simulation, and the treatment effect is the best.

Based on the panel data of 5 provinces in the main grain producing areas in the Lower Yangtze Region from 2007 to 2019, this paper calculated the rebound effect of agricultural water under agricultural technological progress, and analyzed its existing characteristics. The results showed that:①The agricultural technology progress rate from 2007 to 2019 was positive, there were differences among provinces, and the overall fluctuation range between years was small.②Agricultural water in the main grain producing areas in the Lower Yangtze Region generally had a rebound effect, up to 483%, and there were differences among regions. The average rebound effects of agricultural water in Jiangsu, Hubei and Hunan were 53%, 71% and 91% respectively. The average rebound effect of agricultural water of Anhui Province and Jiangxi Province was negative. ③Under the influence of the fluctuation of agricultural technology progress rate, the rebound effect of agricultural water in various provinces varied from year to year, and there was no obvious increase or decrease trend. Only a few years had no rebound effect, most years had rebound effect, and some years had "tempering effect". Finally, according to the different conditions of each province, considering the rebound effect of agricultural water, relevant agricultural water-saving policies were formulated.

In this paper, the No.3 field of citrus Garden of Huaning County Xincun Citrus Co. LTD was taken as the experimental simulation object, and a simulation experimental platform was set up to study the influence of inlet pressure, pipe laying length and outlet hole spacing on irrigation uniformity in the irrigation system, providing technical support for the design of the integrated irrigation system of land, water and fertilizer in the project construction. The single factor test and orthogonal test were used to study the influence of inlet pressure, pipe laying length and outlet hole spacing on the uniformity of irrigation. The results showed that the primary and secondary factors affecting the uniformity of irrigation were inlet water pressure > Pipeline laying length > outlet hole spacing. The optimal combination of orifice discharge uniformity was the combination of inlet pressure of 0.15 MPa, outlet hole spacing of 62.5 cm, laying length of 38.5 m. The uniformity can meet the requirements of the technical standard of water-saving irrigation engineering (GB/T 50363-2018). The study results can be applied to the planting of fruit trees on sloping land to achieve the effect of water-saving, energy saving and increased production, and has a broad application prospect.