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中文摘要：
基于野外试验,研究了间隔覆盖条件下种植作物的坡面土壤水分时空分布及蓄存状况。结果表明,间隔覆盖法可以显著提高覆膜区土壤含水率,其中玉米生长中期最为明显;玉米生长前期覆膜处理下种植区土壤含水率高于对照处理种植区,中期相反,后期相差不大。坡面相同位置表层土壤含水率变化剧烈,且与降雨量变化趋势基本一致;对照处理下深层土壤含水率波动较小,覆盖处理波动较大,坡面上部覆膜使坡面下方较深层土壤含水率增加。间隔覆盖法在作物需水关键期可以显著增加种植区土壤蓄水量。
英文摘要：
Field experiments were carried out to study the spatio-temporal distribution and storage of soil water on slope in the interval coverage condition. The results showed that soil moisture in covering zone increased apparently, especially in the middle growth stage of maize. In contrast with the planting zones of the two treatments, soil moisture content of mulching treatment was higher than control during the early growth stage, lower than control during the middle growth stage, and almost same during the later growth stage. There was a sharp change in the surface soil water content in the same position during the same period, which was similar to the change tendency of rainfall. As to the deep soil water content, there was a sharp change in mulching treatment, and a less change in control. The soil moisture of the lower slope increased by mulching the upper slope. The soil moisture storage of the planting zone increased apparently by using interval coverage method in key water demand stage.
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