Research on Rainwater Harvesting and Yield Increasing Effect of Terrace in Semiarid Area of Loess Hilly Region

YANG Feng-ke

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Research on Rainwater Harvesting and Yield Increasing Effect of Terrace in Semiarid Area of Loess Hilly Region

更新时间：2024-11-07

- Research on Rainwater Harvesting and Yield Increasing Effect of Terrace in Semiarid Area of Loess Hilly Region
- Vol. 20, Issue 5, Pages: 130-132(2006)
- 作者机构：
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  CLC： S343.3S273
- Published：2006
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YANG Feng-ke. Research on Rainwater Harvesting and Yield Increasing Effect of Terrace in Semiarid Area of Loess Hilly Region[J]. 2006, 20(5): 130-132.
DOI：

YANG Feng-ke. Research on Rainwater Harvesting and Yield Increasing Effect of Terrace in Semiarid Area of Loess Hilly Region[J]. 2006, 20(5): 130-132. DOI：

摘要

研究表明

半干旱区梯田平均可拦蓄入渗92.4%的雨水径流及泥沙

正常年份2 m土层有效贮水量比坡地多112~184 mm

可基本满足当地春小麦160.7 mm的亏缺水分的补给;增加土壤水分的高峰期主要在3~5月和7月份

增加量为9.15~46.41 mm

对本区土壤水分的快速补充恢复和缓解5

6月份的“卡脖旱”具有极其显著的作用;建成3年以上的梯田较10°以上的坡地增产幅度可达27.07%~52.78%

水分利用效率也高1.01~3.38 kg/(mm.hm2)。在限量供水条件下

相应的水分利用效率平均达17.9 kg/(mm.hm2)

比旱作提高14.42%。因此

是半干旱区聚水增产的重要措施之一。

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