黄土坡耕地不同地表糙度下坡面填洼与入渗的关系研究  

Relationship Between Depression Storage and Infiltration with Different Surface Roughness of Loess Slope Farmland

作　　者：李陶陶[1] 吴发启[2] 

机构地区：[1]西北农林科技大学水土保持研究所,陕西杨凌712100 [2]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《中国水土保持》2016年第11期60-63,71,共5页Soil and Water Conservation in China

基　　金：国家自然科学基金项目(K305021201)

摘　　要：以黄土坡耕地为研究对象,以平整坡作为对照,采用等高条播、人工锄耕和等高犁耕3种耕作措施产生不同的地表糙度,分析了不同降雨强度条件下地表最大填洼量和实际填洼量的特征、入渗量的影响因素、填洼量与入渗量的关系。结果表明:3种不同耕作措施的地表糙度大小为等高条播>人工锄耕>等高犁耕,最大填洼量、实际填洼量和入渗量随着地表糙度的增大而增大;入渗量也随着最大填洼量和实际填洼量的增大而增大,且与最大填洼量和实际填洼量均呈线性正相关关系,但实际填洼量对入渗量的影响程度要大于最大填洼量。The paper analyzed the characteristics of the maximum depression storage and actual depression storage of land surface,the affecting faclors of infiltration capacity and the relationship between depression storage and infiltration capacity under the different conditions of rainfall intensity by taking loess slope farmland as the study object,taking leveled slopes as control and using different surface roughness caused by3 cultivation measures of contour drilling,manual hoeing and contour plowing.The outcomes show that a) the size of surface roughness of the three different tillage measures is contour drilling > manual hoeing > contour plowing.The maximum depression storage,actual depression storage and infiltration capacity are increased along with the increase of surface roughness and;b) the infiltration capacity is increased along with the increase of the maximum depression storage and actual depression storage.The maximum depression storage and actual depression storage show linear positive correlation with the infiltration capacity.In fact,the influence of actual depression storage is greater than that of the maximum depression storage.

关 键 词：地表糙度 填洼量 入渗量 黄土高原 

分 类 号：S157.1[农业科学—土壤学]