果园覆草是近几年来新兴的一种土壤管理制度。其方法就是用秸秆、杂草、绿肥等有机物将树冠下边的地面覆盖起来,从而达到提高果树生产能力,减轻人工劳作的目的,具体来说覆草可以起到以下作用。 一、减少地表水分蒸发,盐碱地可以减轻泛盐。果园覆草后,在同样条件下,土壤含水量可增加3％左右,盐碱地由于土壤水分蒸发受到抑制,可以减少土壤盐分上 Orchard mulching is a newly emerging soil management system in recent years. The method is to cover the ground under the canopy with organic matter such as straw, weeds and green manure so as to achieve the purpose of improving fruit tree productivity and alleviating manual labor. Specifically, the grass covering can play the following roles. First, reduce the evaporation of surface water, saline can reduce pan-salt. Orchard mulching, under the same conditions, the soil moisture can increase about 3%, saline-alkali soil evaporation due to be inhibited, can reduce the soil salt