Effects of Brackish Water Irrigation on Water-salt Distribution and Winter Wheat Yield in saline-alkali area

China Rural Water and Hydropower ›› 2019 ›› (8) : 28-35.

Effects of Brackish Water Irrigation on Water-salt Distribution and Winter Wheat Yield in saline-alkali area

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Abstract

Abstract: In order to explore a scientific and reasonable irrigation model and achieve the rational and effective use of brackish water in farmland irrigation, a field experiment was carried out in Zhanhua District, Shandong Province from 2015 to 2017. Four different irrigation treatments by using fresh water and brackish water with a salinity of 3.0g/L were established (T1:80mm fresh water + 80mm fresh water + 80mm fresh water; T2:80mm fresh water + 80mm fresh water; T3:80mm fresh water + 80mm brackish water + 80mm brackish water; T4:80mm fresh water + 80mm brackish water). The results showed that with the same volume of irrigation water, T3 not only could ensure the soil moisture, but also saved the freshwater resources. The final profit and loss of soil salinity was T1 < T3 < T2 < T4, indicating that T3 could ensure the appropriate soil moisture and accumulate less salt. The yield of T1 and T3 was increased by 10%~25% compared with the yield of T2 and T4. The yield of T3 was slightly reduced compared with T1. In terms of water saving significance and yield, the irrigation treatment of T3 was the better one.

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Key words: winter wheat / brackish water / water-salt distribution / yield

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. Effects of Brackish Water Irrigation on Water-salt Distribution and Winter Wheat Yield in saline-alkali area. China Rural Water and Hydropower. 2019, 0(8): 28-35

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