典型黑土区坡耕地水土保持措施适宜性分析  

Suitability of soil and water conservation measures on sloping farmland in typical black soil regions of Northeast China

作　　者：陈雪[1] 蔡强国[2] 王学强[1] 

机构地区：[1]华中农业大学资源环境学院,武汉430070 [2]中国科学院地理科学与资源研究所,北京100101

出　　处：《中国水土保持科学》2008年第5期44-49,共6页Science of Soil and Water Conservation

基　　金：国家重点基础研究发展计划973项目“中国主要水蚀区土壤侵蚀过程与调控研究”(2007CB407207)

摘　　要：为了探讨东北典型黑土区坡耕地的治理情况，综合现有研究成果分析了不同坡度下顺坡垄作改横坡垄作、水平梯田、等高植物篱等措施的蓄水保土效益。结果表明：它们在黑土区能够发挥较高的水土保持效益坡度适宜范围，从而确定在0～5°、5°-8°、8°～15°坡度级别的坡耕地上分别采用以改垄措施、等高植物篱措施、水平梯田措施为主的措施进行治理，在〉15°的坡耕地上选择退耕还林。Choosing the appropriate soil and water conservation measures has importance to control the losses of soil and water on sloping farmland in black soil region. In this paper, some control measures such as the contour ridge tillage, contour hedgerow intercropping, bench terrace have been studied, and it is found that they have different effects on soil and water conservation and play a high efficiency of soil and water conservation on sloping farmland with different gradient slope. So some kinds of control modes can be established, which is that, the contour ridge tillage should be used on the slope of 0 - 5°; contour hedgerow intereropping should be used on the slope of 5°- 8°; bench terrace should be used on the slope of 8°- 15°; and returning farmland to forest, if the slop is more than 15°.

关 键 词：坡度 坡耕地 横坡垄作 水平梯田 等高植物篱 

分 类 号：S157.433[农业科学—土壤学] S157.2[农业科学—农业基础科学]