不同垄向带状留茬间作农田防风蚀能力的风洞试验  

Experimental on Preventing Wind Erosion Ability of Different Ridge Angles of Direction's Intercroping Stips Stubble by Wind Tunnel

作　　者：赵彦军[1] 赵士杰[1] 董立江[1] 贾清华[1] 徐志成[1] 

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特010018

出　　处：《农机化研究》2009年第10期137-139,共3页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(40661009)

摘　　要：在内蒙古自治区武川县旱作农业区进行带状留茬间作农田防风蚀能力的风洞试验,主要讨论了不同带宽下的留茬带针对不同吹蚀风向的保护效果。试验表明:短带宽条件下,风向角为90°时收集的输沙量大于风向角为45°时收集的输沙量;在带宽大于2.5m条件下,风向角为45°时引起的输沙量大于90°的输沙量;且当带宽大于2.5m时,风向角为45°条件下试验段内的留茬带基本不具备保护性能。The experiment was taken on dry farming in WuChuan.It mainly discussed about the protection effect which was under different Angles of Direction and different wind Velocity wind deflationed stubble strips which have different width.The result showed that when the stubble was less than 2.5m,the Sediment Discharge which for 90°angle of direction bigger than the 45°angle of direction.but when then strips breadth more than 2.5m,the wind deflationed result was the Sediment Discharge which for 45°angle of direction bigger than the 90°and the same time the stubble stripe of 45°hadn＇t the protective effect.

关 键 词：带状留茬间作农田 可移动式风蚀风洞 输沙量 风向角 

分 类 号：S344[农业科学—作物栽培与耕作技术]