【摘要】 以平凉市纸坊沟一坝坝地及两岸沟坡土壤为对象,测定了0～120cm土层的土壤含水量及相应样点的小麦产量,并采用对比分析和数理统计的方法对坝地土壤水分、不同坡度、坡向及断面土壤水分和小麦产量情况进行了分析研究,结果表明:0～120cm土层内土壤含水量分布为坝地>沟坡梯田,沟坡下部>中部>上部;沟坡梯田小麦产量情况为下部>中部>上部;收获期0～120cm土层内坝地土壤含水量与沟坡梯田无显著差异,而坝地小麦产量明显高于沟坡梯田,且存在极为显著的差异。可见淤地坝建设和坝地的形成,能提高两岸沟坡土壤的含水量,并能提高粮食作物的产量。更多还原

【Abstract】 The paper measures the soil moisture of 0～120 cm stratum and the output of wheat in relevant pilot areas, analyzes and studies on the soil moisture of dammed land and sections, different slopes and locations and the output of wheat by using methods of contrast analysis and mathematical statistics and taking No.1 dammed land and gully-slope soil on the both sides of the gully as an object. The results show that the soil moisture of 0～120 cm stratum of dammed land is higher than that the terraced fields and the sequence of sloped land is from higher to lower as the lower part, the halfway up and the upper part. The wheat output of terraced fields from higher to lower is also as the sequence of the lower part, the halfway up and the upper part. During the harvesting period, the soil moisture of 0～120 cm stratum of the dammed land has no notable difference as that of the terraced fields, while the wheat output of dammed land is remarkably higher than that of the terraced fields, existing a great difference. Thus, it can be seen that the building of warping dams and the formation of dammed land can increase the soil moisture of lands on the both sides of the gully and also can increase the crop output.更多还原