麦田秸秆覆盖的作用及其节水效应的初步研究

Effect of Straw Mulch in Wheat Fields and Preliminary Study of Water Economization

通过1987—1988年度麦田秸秆覆盖试验表明:用作物秸秆覆盖麦田,有保温、保墒、保土、促根、抑草、培肥等多种作用。在有限供水条件下,可节水22.8—27.8％。其所减少的水分是不可回收利用的地面蒸发水量,从水资源开发看,减少这部分水的无效消耗,有着重要意义。

The results of straw mulch experiments in wheat field in the years 1987—1988 showed that mulch of wheat straw has such functions as to keep soil warm,conserve soil moisture, hold soil together, inhibit weed growth, promote plant root development and better soil fertility. Under the limited water supply, 22.8—27.8% of water can be saved. The reduced soil moisture is the amount of surface evaporation that can not be recovered.As viewed from exploration and utilization of water resources, the reduction of this unavailable water consumption is of great importance.