Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount

TAO Jun; HE Bing-hui; XU Xiao-jun; LI Jian-xing; SUN Wen-yan

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Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount

- Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount
- Bulletin of Soiland Water Conservation Vol. 32, Issue 3, Pages: 38-43(2013)
- 作者机构：
  
  1. 西南大学资源环境学院三峡库区生态环境教育部重点实验室,重庆,400715
  2. 西北农林科技大学资源环境学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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TAO Jun, HE Bing-hui, XU Xiao-jun, et al. Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 38-43.
DOI：

TAO Jun, HE Bing-hui, XU Xiao-jun, et al. Effects of Different Types of Multiple Cropping on Soil Erodibility and Erosion Amount[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 38-43. DOI：

摘要

采用野外调查与室内分析相结合的方法

把4种农作物引入复合种植模式中

以土壤可蚀性K值、径流量、侵蚀量为指标

对紫色土区不同复合种植模式与水土流失特征的关系进行分析和研究。研究结果表明:(1)与单一的种植模式相比

不同复合种植模式使水土流失敏感性增强

K值增大

土壤容易被侵蚀。(2)土壤可蚀性K值与土壤砂粒含量呈极显著负相关

相关系数为-0.957;与土壤黏粒含量、有机C含量呈负相关

Abstract

In combination of field investigation with laboratory analysis

the relationships between multiple cropping and soil and water loss in the purple soil region were analyzed using soil erodibility Kvalue

runoff and erosion amount as indicators.Results showed that:(1)In contrast to single cropping pattern

the different cropping modes enhanced the sensitivity to soil and water loss

increased soil erodibility Kvalue and made soil to be eroded more easily.(2)The K value had a significantly negative correlation with sand content

with a correlation coefficient of-0.957.It was negatively correlated with clay content and organic C content

with correlation coefficients of-0.191and-0.637

respectively.The Kvalue had a significant positive correlation with silt content

with a correlation coefficient of 0.986.The levels of organic matter content and clay content were the sound indexes reflecting the resistance to erosion for purple soil.(3)Compared with the grapefruit pure cropping pattern

the runoff interception efficiency by multiple cropping was significant.The multiple cropping pattern of grapefruit and Pachyrhizua angulatus has the best effect in controlling soil erosion and thus is most suitable for application.

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