首页 | 本学科首页   官方微博 | 高级检索  
     检索      

秸秆覆盖对坡面径流及土壤流失影响的研究
引用本文:王春红,肖娟.秸秆覆盖对坡面径流及土壤流失影响的研究[J].山西农业大学学报(自然科学版),1998,18(2):149-152.
作者姓名:王春红  肖娟
作者单位:山西农业大学水土保持规划设计研究所,吕梁行署水利水保局
摘    要:采用室内和野外试验相结合的方法,研究了秸秆覆盖对黄土残塬沟壑区坡耕地径流和土壤侵蚀的影响。结果表明:秸秆覆盖具有阻延流速(可达6-25cm/s)和增加糙率(可增加0.02-0.03)的功能,能够延缓起流时间,降低洪峰流量和沙峰值,减少泥沙含量和控制土壤侵蚀(可减少50%-80%),但其效果随坡度的增加而减弱,随覆盖的厚度增加而增加。

关 键 词:秸秆覆盖  坡面径流  土壤侵蚀

A Preliminary Study on Effects of Straw Mulches On Surfaces Flow and Soil Erosion on Slope Farmland
Wang Chunhong et al..A Preliminary Study on Effects of Straw Mulches On Surfaces Flow and Soil Erosion on Slope Farmland[J].Journal of Shanxi Agricultural University,1998,18(2):149-152.
Authors:Wang Chunhong
Institution:Shanxi Agricultural University Sports Teaching and Research Section
Abstract:This paper studied on effects of staw muches on surface flow and soil erosion on slope farmland by indoor and outdoor experiments. Results show that muches can retard runoff velocity (reach to 6-15cm/s)and increase roughess coeffience in the Manning equation (reach to 0 02-0 03),and also it can postpone beginning time of runoff and sediments and control soil erosion (decline 50-80%). However, those efficiencies decrease as grade increaces and increase as thickness increases.
Keywords:Straw Mulches  Surface Flow  Soil erosion  
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号