顺坡农业种植区坡面集流措施研究

Flow Collecting Measures of Slope Surface in Downslope Agricultural Planting Area

在强降雨条件下的山区农业种植区常采用顺坡种植的方式来降低降雨侵蚀对农业生产的影响,但往往会将农业生产与生态环境带入恶性循环的发展过程,如采取等高固氮植物篱等田间水土保持措施会因占用一部分生产用地和影响农业活动而不被农户所接受。以金沙江干旱河谷典型顺坡农业种植区为研究区,在走访调查和资料收集的基础上,提出了建设坡面集流措施。近5年的试验结果表明:坡面集流措施不仅能有效控制田间水土流失,而且能提高单位面积农业年产值,对于改善山区生态环境和提高农业生产水平具有重要的现实意义。

The agricultural planting area in mountainous region under the conditions of strong rainfall usually uses the method of downslope planting to reduce the effection of rainfall erosion to agricultural production.It often puts the agricultural production and ecological environment into vicious circle development.Such as nitrogen-fixing plant hedge having accordant heights,field soil and water conservation measures are not accepted by farmers because of occupying production lands and affecting agricultural activities.The paper puts forward to build flow collecting measures of slope surface based on interview,investigation and data collection by taking downslope agricultural planting area in arid valley region of Jinsha River as a study area.The outcomes of recent 5-year tests show that the flow collecting measures of slope surface can not only effectively control soil and water loss of the field,but also increase annual output value of unit area and have important actual significance for improving ecological environment and increasing agricultural production of mountainous region.