利用弃水蓄水灌溉效果研究

Effect of Liman-Irrigating with Surplus Water

为了解决北方灌区半干旱的不良农业环境,采用试验研究和应用实践相结合的方法,对山西省三坝灌区不同质地土壤、用4种灌水定额方案进行灌溉,分析了利用弃水蓄水灌溉对灌区的影响。结果表明,利用弃水蓄水灌溉对灌区带来了有利的影响。灌溉可为作物生长提供水分、补充地下水、降低盐碱地的含盐量、促进作物增产、提高水分生产率,取得了良好的效果。利用弃水蓄水灌溉是对有效利用水资源、节约用水的一个重要贡献。

In order to solve the problem of semiarid in irrigation areas of north China, the method of experimental study and practical application was used in this paper. The soils with different texture in the third dam irrigation area of the Fenhe River, Shanxi province were irrigated by four irrigation quotas, the effect on irrigation area of liman-irrigating with surplus water was analyzed . The results indicate that the favorable effects on irrigation area were brought by limanirrigating with surplus water, which in clude supplying water for crops, replenishing groundwater, reducing the salinity of salt lick, promoting crop yield, and increasing water productivity. Liman-irrigating with surplus water makes a significant contribution to the more effective use water and water conservation.