Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland

SUN Hui; TANG Ya; CHEN Keming; ZHANG Yanzhou

doi:11894/1005-829x.2001.21(2).48

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Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland

- Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland
- Bulletin of Soiland Water Conservation Vol. 20, Issue 2, Pages: 48-51(2001)
- 作者机构：
  
  1. 中国科学院成都生物研究所,四川,成都,610041
  2. 中国科学院南京土壤研究所,江苏,南京,210008
- 作者简介：
- 基金信息：
- DOI：11894/1005-829x.2001.21(2).48
  CLC：
- Published：2001
- 稿件说明：
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SUN Hui, TANG Ya, CHEN Keming, et al. Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 48-51.
DOI：

SUN Hui, TANG Ya, CHEN Keming, et al. Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 48-51. DOI： 11894/1005-829x.2001.21(2).48.

摘要

在金沙江干旱河谷坡耕地上进行等高固氮植物篱试验结果表明，种植植物篱后，坡耕地上不论是单次降雨产生的径流还是累积地表径流量均显著降低，幅度为26%～60%。同时，植物篱对控制暴雨产生的地表径流尤其有效，这对防治山区坡耕地由于暴雨产生水土流失很有意义。坡耕地径流的季节分布表明，在干旱河谷区，坡耕地径流主要产生于雨季中后期，与土壤侵蚀主要发生在雨季前期有所不同。

Abstract

A long-term experiments was carried out in Tanguanyao and Masangping site in dry valley of Jinsha river with a climate of more than 90%of its rainfall in monsoon from May to Oct since 1991. The long-term experiments involved five treatments with three replicates(CK:control

conventional slope tillage

T2 and T3 :Leucaena leucocephala hedgerow with or without fertiliszr|T4 :Tephrosia candida hedgerow with fertilizer

and T5 : mulberry trees within Leucaena hedgerows with fertiliszr. The pruning of contour hedgerow of Leucaena and Tephrosia were used as mulch. The crops were the same in the same site. The results showed that contour hedgerow intercropping could reduce runoff of sloping cropland significantly. Compared with the control

contour hedgerow intercropping decreased runoff by 26 %～ 60%. Regression analysis showed that linear dependence exists between events runoff under contour hedgerow and that of CK. The data of events runoff indicated that surface flow of sloping cropland mainly occurred in the metaphase and anaphase of monsoon.

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