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当前位置: 首页 > 文章 > 北京周边典型农田风蚀风洞试验与防治分析 农业机械学报 2008,39 (7) 70-73
Position: Home > Articles > Wind Erosion Experiment and Countermeasures on Typical Farmlands around Beijing Transactions of the Chinese Society for Agricultural Machinery 2008,39 (7) 70-73

北京周边典型农田风蚀风洞试验与防治分析

作  者：
冯晓静;高焕文;王丽洁;李洪文
单  位：
河北农业大学机电工程学院;北京市农业局;中国农业大学工学院
关键词：
土壤风蚀;风洞;试验
摘  要：
利用可移动野外风蚀风洞对北京周边典型农田进行了农田风蚀的研究。主要考察耕作制度、地表状况、风速和作物行向4种因素对风蚀的影响规律。试验结果表明:与传统翻耕对比,一年两熟免耕覆盖地和一年一熟的玉米根茬地都可以减少土壤风蚀。地表覆盖量的增加可以减少地表土壤的风蚀,覆盖量越大,减少愈明显。一年一熟区地表以玉米根茬防治风蚀为主,风向与行向平行时风蚀量最大,垂直时最小,45°时介于两者之间;风速较大时,玉米根茬的根系有较好的固土作用。最后对防治农田风蚀提出了相关对策。
译  名：
Wind Erosion Experiment and Countermeasures on Typical Farmlands around Beijing
作  者：
Feng Xiaojing1 Gao Huanwen2 Wang Lijie3 Li Hongwen2(1.Agricultural University of Hebei,Baoding 071001,China 2.China Agricultural University,Beijing 100083,China 3.Beijing Bureau of Agriculture,Beijing 100029,China)
关键词：
Wind erosion of land surface soil,Wind tunnel,Experiment
摘  要：
A series wind tunnel experiments were conduced on in typical farmlands around Beijing.The air-born dusts were measured in the fields under different cultivations,tillage managements,cover rates and intersectional angles between wind and the crop rows.The results show that the amount of raising dust increases with the wind velocity by power function;conservation tillage of one crop a year and two crops a year can reduce wind erosion rate than traditional tillage;the increase of cover rate can reduce the amount,and the more the cover, the better the effect;the amount of raising dust can be changed by the angle between the wind and the crop row,and the amount is highest when zero angle,medium 45° angle,and lowest 90° angle.Finally,some countermeasures such as generalization conservation tillage,hold appropriate stubble and straw in land,were proposed for the wind erosion in typical farmland around Beijing.

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