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阴山北麓农牧交错区农田土壤风蚀影响因子及防治对策
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摘要:
土壤风蚀是阴山北麓农牧交错区土地退化的主要原因之一.从风蚀气候因子、地表粗糙度、植被覆盖度、土壤性质和人为影响因素等方面对农田土壤风蚀的主要影响因子进行了分析,探讨了这一地区农田土壤风蚀的防治对策,提出了以实施保护性耕作为主,辅之以间作、轮作的防治风蚀措施.这种措施既能发挥保护性耕作带残茬降风速、保水土、抗风蚀的作用,并对翻耕带形成保护;又可满足地区种植结构,解决保护性耕作带来的杂草防治和农家肥施用难题,对实现地区可持续农业发展具有重要意义.
关键词:  农牧交错区  土壤风蚀  保护性耕作  间作  轮作  阴山北麓  农牧交错区  农田土壤风蚀  风蚀影响因子  防治对策  Mountain area  land  grass  farming  region  cross  soil wind erosion  strategies  control  意义  持续农业发展  施用  农家肥  杂草防治  种植结构
DOI:
投稿时间:2005-05-25
基金项目:中国科学院资助项目
Influential factors and control strategies of farming soil wind erosion in the cross region between farm land and grass land in Yinshan Mountain area
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Abstract:
Wind erosion is one of the main causes of land degradation in the cross region between farm land and grass land in Yinshan Mountain area.By analyzing the influential factors such as meteorology,land surface roughness,vegetation coverage,soil properties and human activities etc.on wind erosion of farm land,the paper investigated the controlling strategies of wind erosion for this region and put forward a preventing measure of such that giving priority to conservation tillage while making strip intercropping and crop rotating.Stubble strip of conservation tillage can lower wind velocity,conserve water and soil,resist wind erosion and protect strip ploughed land.Strip intercropping can satisfy the needs of this area's planting structure.Crop rotation can resolve the problem of controlling grass and applying farm manure with pursuing conservation tillage.The measures have important implications for realizing agricultural sustainable development in the region.
Key words:  cross region between farm and grass land,soil erosion by wind,conservation tillage,intercrop,crop rotation

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