论文部分内容阅读
采用野外调查、定位实验和室内分析相结合的方法 ,通过水平槽与鱼磷坑、荒坡防治水土流失的比较 ,研究了水平槽工程及其生物措施防治低山丘陵地带的水土流失所起的作用 .结果表明 ,水平槽工程利用截水埂拦截径流 ,通过增大土壤入渗速率和延长入渗时间 ,蓄积更多的水分 ;结合植树种草减少蒸发 .水平槽在截获径流的同时 ,也使径流携带的有机无机物质沉积在槽内 ,参与土壤的进一步发育 ,改善当地的农业生态环境 .
By using the methods of field survey, location experiment and indoor analysis, the paper compares the water and soil erosion prevention and control by horizontal trough with fishpond pit and barren slope to study the effect of horizontal trough project and its biological measures to prevent soil erosion in hilly area The results show that the horizontal trenches intercept the runoff, and increase the infiltration rate and prolong the infiltration time to accumulate more water and reduce the evaporation in combination with the planting tree grass. The runoff carrying organic and inorganic substances deposited in the tank, involved in the further development of soil, improve the local agricultural environment.