保护性耕作对地表径流及土壤侵蚀的影响

赵君范; 黄高宝; 辛平; 谢奎忠; 许爱霞

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保护性耕作对地表径流及土壤侵蚀的影响

试验研究

- 保护性耕作对地表径流及土壤侵蚀的影响
- Runoff and Quantity of Soil Erosion Uunder Conservation Tillage System by Simulated Rainfall
- 水土保持通报 2007年26卷第6期页码：16-19
- 作者机构：
  
  1. 甘肃农业大学资源环境学院
  2. ,北京,100081
  3. 甘肃农业大学农学院
  4. 甘肃省林业科学技术推广总站
- 作者简介：
- 基金信息：
  
  中澳合作项目ACIAR“提高甘肃黄土高原西部雨养农业系统生产力及其可持续性的研究”(LWR2/1999/094);国家科技支撑计划“黄土高原丘陵沟壑区保护性耕作技术集成研究与示范”(2006BAD15B06)
- DOI：
  中图分类号：
- 纸质出版：2007
- 稿件说明：
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赵君范, 黄高宝, 辛平, 等. 保护性耕作对地表径流及土壤侵蚀的影响[J]. 水土保持通报, 2007,26(6):16-19.

ZHAO Jun-fan, HUANG Gao-bao, XIN Ping, et al. Runoff and Quantity of Soil Erosion Uunder Conservation Tillage System by Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2007, 26(6): 16-19.
赵君范, 黄高宝, 辛平, 等. 保护性耕作对地表径流及土壤侵蚀的影响[J]. 水土保持通报, 2007,26(6):16-19. DOI：

ZHAO Jun-fan, HUANG Gao-bao, XIN Ping, et al. Runoff and Quantity of Soil Erosion Uunder Conservation Tillage System by Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2007, 26(6): 16-19. DOI：

摘要

采用人工模拟降雨方法对陇中黄土高原连续实施5 a的4种耕作措施:传统耕作(T)

传统耕作结合秸秆还田(TS)

免耕(NT)

免耕加秸秆覆盖(NTS)下豌豆地收获后的径流起始时间、径流量、土壤侵蚀量进行了研究。结果表明

在降雨强度为85 mm/h的条件下

NTS可以延缓径流

减小径流强度。与NT

T这3种处理比较

NTS的径流量分别降低了2.4%

12.1%

34.7%。入渗量分别增加了2.7%

13.6%

38.6%。径流出现时间分别延迟1.17

0.83

3.83 min。土壤侵蚀量减少了0.3%

17.7%

62.4%。可见

免耕秸秆覆盖的水土保持效应最为明显

传统耕作的方式极易发生土壤侵蚀。

Abstract

Four tillage treatments were carried out for five years by simulated rainfall in the middle area of the Loess Plateau: traditional tillage(T)

traditional tillage with straw incorporated(TS)

no-tillage(NT)

and no tillage with straw cover(NTS).Runoff starting time

amount of runoff

and amount of soil erosion were measured af ter harvest of pea.Under rainfall intensity of 85 mm/h

ru noff process was alleviated and the amou nt of ru noff was red uced using NTS.Compared to NT

and T

the amounts of runoff under NTS were red uced by 2.4%

12.1%

and 34.7%

respectively; infiltration rates were increased by 2.7%

13.6%

and 38.6%; runoff starting times were slowed down 1.17

0.83

and 3.83 min; the amounts of soil erosion were red uced by 0.3%

17.7%

and 62.4%.Therefore

the effects of soil and water conservation under NTS are most obvious and soil erosion is easily to take place u nder traditional tillage.

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