本论文针对河西内陆区玉米常规灌溉制度下水量浪费严重、水分利用效率低下和种植结构单一等现状，采用室内试验和田间试验的方法，分析地埋式滴灌条件下不同毛管埋深对大田玉米土壤水分水平方向和垂直方向分布规律以及玉米出苗率、株高及茎粗、叶面积及单株干物质量的影响。结果表明：水平方向上距离毛管中心两边同等位置处，其土壤含水率基本呈对称状态，垂直方向上距毛管中心两边同等位置处，其下面的土壤含水率略高于上方含水率。滴头流量为1.2L/h时，T1处理出苗率明显高于其他处理，出苗率达到56.51%，其次为处理T2可达20.61%，其余处理出苗率都不足10%；埋深40cm处理在各生育期的株高及茎粗、单株干物质量显著低于埋深30cm与埋深35cm；毛管埋深30cm更有利于叶面积系数的增加。同一毛管铺设方式下、灌水定额和灌水时间一致的情况下，滴头流量为1.6L/h时其产量显著高于滴头流量为1.2L/h的处理。毛管埋深为30cm、间距为60cm为适宜地埋式滴灌条件下大田玉米的最优组合模式，该研究成果为我国西河内陆区地埋式滴灌技术发展提供理论技术指导

This thesis contraposed that under conventional irrigation system serious water waste and water use efficiency is low and the planting structure of the single status quo in He Xi inland area, using the method of laboratory test and field test. This paper discussed the different capillary depth of the buried drip irrigation that the growth rhythm of corn in the horizontal and the vertical distribution of soil moisture and the influence of seedling emergence、plant height、leaf area、dry matter quality with per plant. The results showed that in the horizontal direction, the soil moisture content with the capillary drip head is symmetrical at the same distance on both sides，because the role of soil gravity potential, in vertical direction, from the moisture content of capillary drops below the head of the same distance is higher than the moisture content of capillary drip overhead. When the flow rate drops to 1.2 L/h, the emergence rate of T1 treatment significantly higher than the other, when the germination rate reached 56.51%, followed by processing T2 can reach 20.61%, the rest of the processing emergence rate is less than 10%; The 40 cm depth treatment in different growth period of plant height and stem diameter、dry matter quality significantly less than the 30 cm depth and depth 35 cm; The 30 cm depth is more conducive to the increase of the coefficient of leaf area. The same capillary laying mode, under the condition of irrigation quota and irrigation at the same time, flow rate drops to 1.6 L/h when its output is significantly higher than flow rate drops to 1.2 L/h. Capillary buried deeply 30 cm, spacing for 60 cm for suitable buried under the condition of drip irrigation field corn optimal model The results of the study provides the theoretical foundation for buried drip irrigation technology development in our country.