Erosion Characters of Ridge and Ditch Under Contour Tillage

LIU Gangcai

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Erosion Characters of Ridge and Ditch Under Contour Tillage

- Erosion Characters of Ridge and Ditch Under Contour Tillage
- Bulletin of Soiland Water Conservation Vol. 18, Issue 3, Pages: 33-35(1999)
- 作者机构：
  
  1. 四川大学,成都市,610041
  2. 中国科学院水利部成都山地灾害与环境研究所,成都市,610041
- 作者简介：
- 基金信息：
- DOI：
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- Published：1999
- 稿件说明：
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LIU Gangcai. Erosion Characters of Ridge and Ditch Under Contour Tillage[J]. Bulletin of Soiland Water Conservation, 1999, 18(3): 33-35.
DOI：

LIU Gangcai. Erosion Characters of Ridge and Ditch Under Contour Tillage[J]. Bulletin of Soiland Water Conservation, 1999, 18(3): 33-35. DOI：

摘要

研究了紫色土地区等高垄作法耕作中垄和沟的侵蚀特点，结果表明：等高垄作法在无覆盖时（包括植被）

相对于平板耕作法有保水作用，而无防蚀效果；侵蚀主要发生于垄上，以流失土壤物理性粘粒为主，而平板地流失土粒无选择性，结构系数明显相对减小，导致了土壤性能恶化。

Abstract

The erosive characteristics of ridge and ditch under countour tillage are studied in purple soil. The results show that

comparing with conventional tillage(CK)

the runoff of contour tillage (CT) is diminished

but the sediment is not. When there are not any cover (including vegetable cover) on soil

the sediment of CT is mainly physical clay coming from its ridge

but that of CK is similar to the particle distribution of its source soil and its coefficient of soil structure is decreased significantly. It suggests that cover on ridge of CT will play an important role in controlling erosion

and CK will led to soil degradation notably.

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Related Institution

College of Resources and Environmental Science, Fujian Agriculture and Forestry University

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