盐角草对滴灌条件下积盐范围内盐分的影响

目的]确定湿润峰、积盐范围及盐角草吸盐能力,控制积盐范围内盐分。方法]以pH 7.9的水作为灌溉水源,在不同土壤初始含水率、土壤容重及滴头流量的条件下研究土壤湿润体的变化过程。结果]盐角草吸走部分Na＋、Cl-抑制盐分,积盐范围内土深20cm处的总含盐量降低了0.12 g/kg。结论]该研究可以为有效地控制滴灌条件下湿润锋边缘积累盐分提供依据。

Effects of Salt Angle Grass on Soil Salinity Under the Condition of Drip Irrigation within Salt Scope

Objective] The wet peak,deposited salt range and salt absorption ability of salt angle grass were determined,and absorption deposited salt was controlled within the scope.Method] Taking pH 7.9 water as irrigation water,the change process of moist soil body was studied under the condition of different initial moisture content,soil bulk density and flow rate.Result] salt angle grass aborbed part of Na+ and Cl-to inhibit the salinity.The total salt content within the soilt depth of 20 cm dropped 0.12 g/kg.Conclusion] The research could provide the basis for the control of soil salinity of the fringe of the wetting front under the condition of drip irrigation.