干旱地区农业研究2009，Vol.27Issue(4)：180-184,229,6.
保护性耕作农田风沙流空间分布规律研究
Testing and research on space distribution rule of drifting sand flux on farmland with conservative tillage
摘要
Abstract
The original position of field wind tunnel was tested in order to make clear the space distribution rule of drifting sand flux on farmland with conser vative tillage. The result showed that horizontal distribution in all heights of drifting sand flux on farmland with conservative tillage followed cubic polynom ial rule in different wind speed, and drifting sand flux in each height basicall y reached the balancing and stable state when passed through 27 rows stubble and 5.5 m horizontal distances; drifting sand flux distribution curve in the ve rtic al direction followed higher polynomial rule,and there was "trunk" domino aff ect alike the vertical distribution of the ground surface sediment runoff in gra vel Gobi. The result also showed that drifting sand flux on farmland with conser vative tillage mainly moved bellow 40cm height of the ground surface, about 90% of all wind erosions.关键词
保护性耕作/风蚀/风沙流Key words
conservative tillage/wind erosion/sand-driving win d/testing and study分类
农业科技引用本文复制引用
孙悦超,麻硕士,陈智,赵永来..保护性耕作农田风沙流空间分布规律研究[J].干旱地区农业研究,2009,27(4):180-184,229,6.基金项目
高等学校博士学科点专项基金项目(20050129007) （20050129007）
