水土保持学报2012，Vol.26Issue(4)：32-36,5.
植大豆对坡耕地径流侵蚀产沙的影响
Effect of Soybean Plants on Runoff Erosion Sediment on Slope Land
摘要
Abstract
Crops are the most important cover on slope lands. In order to understand the development of soil erosion under crop cover, taking soybean as an object, investigated runoff and sediment yield on slope at different growth stages using simulated rainfall. The results showed that soybean could reduce runoff and sediment yields by 31. 43~/oo and 54. 84~ in the whole growth season, respectively. Runoff and sediment yields decreased and the fluctuation of them gradually declined and stabilized as soybean grew. The existence of the soybean plant could improve the slope constant infiltration rate by 109%0 approximately. Soil infiltration capacity was enhanced effectively by ~＂oybean plant. The calculation indicated that soil loss ratio affected by soybean varied from 0.79 at seedling stage to 0.24 at seed generative stage, and presented an exponential function against LAI of soybean. Soybean had a considerable restrain effect on soil erosion on slopes, and the interception effect for sediment was stronger than that for runoff.关键词
大豆/坡耕地/土壤侵蚀/产流产沙/土壤流失比率Key words
soybean/slope land/soil erosion/runoff and sediment/soil loss ratio分类
农业科技引用本文复制引用
马波,刘雨鑫,吴发启..植大豆对坡耕地径流侵蚀产沙的影响[J].水土保持学报,2012,26(4):32-36,5.基金项目
国家“973”重点研究项目 （）
教育部高等学校特色专业建设项目 （）
