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在宁南旱作农业区 ,采用沟垄相间、垄上覆膜、沟内种植、垄面产流、沟内集水的微集水种植方式 ,以期改善土壤供水能力和降水空间分配 ,增加局部水分供给 ,提高作物产量和水分利用率。 1 997— 1 998年试验结果表明 ,谷子耗水量增加 92 .2 %～ 1 1 9.3% ,产量平均提高 6 8.6 %～ 98.1 % ,水分利用率平均达到 7.75～ 1 2 .6 5 kg/(mm· hm2 )。处理中窄垄型增产效果优于宽垄型
In the dry farming area of south Ningxia, micro-catchment planting methods such as furrow and ridge, film mulching, ditch planting, ridge runoff and water catchment in the ditch were adopted in order to improve soil water supply capacity and spatial distribution of precipitation and increase local Water supply, improve crop yields and water use efficiency. The results of 997-1998 experiment showed that the water consumption of millet increased 92.2% ~ 11.3%, the yield increased by 8.66% ~ 98.1% on average, and the average water use efficiency reached 7.75 ~ 12.65 kg / (mm) · Hm2). The treatment of narrow ridge type yield superior to wide ridge type