中国农业大学学报2013，Vol.18Issue(2)：38-44,7.
作物残茬覆盖农田地表风沙流分布规律
Research on distribution rule of wind-sand flow over farmland covered by crop residuals
摘要
Abstract
In order to investigate distribution rule of wind-sand flow over farmland covered by crop residuals, a moveable wind tunnel for aeolation was employed to carry out the field test both on autumn tillage field and crop residual stubble coverage fields. The results showed that field sediment transport amount on farmland covered by crop residuals increased with the increasing of wind speed and height from field surface, the more the stubble coverage, the less the sediment transport amount. The configuration of wind-sand flow was mainly occurred within the height of stubbles and the sediment discharge accounted for 86% of the total amount within the height of 300 mm from the earth's surface,The farmland covered by crop residuals has better interception effect if its cover degree exceeds 65% at high wind speed.关键词
风沙流/作物残茬/移动式风洞/输沙量/相对截留率Key words
wind-sand flow/ crop residual stubble/ moveable wind tunnel/ sediment transport amount/ relative interception rate分类
农业科技引用本文复制引用
赵永来,陈智,孙悦超,王荣莲..作物残茬覆盖农田地表风沙流分布规律[J].中国农业大学学报,2013,18(2):38-44,7.基金项目
国家自然科学基金项目(41161045) （41161045）
内蒙古自治区自然科学基金项目(2010BS0607) （2010BS0607）
