论文部分内容阅读
长江上游量大面广的陡坡耕地,既是当地农民赖以生存的基础,也是区域粮食自给和国家粮食安全保障的重要补充。长期以来,长江上游坡耕地耕作粗放,土地产出率与劳动生产率低下,抵御干旱与洪涝等自然灾害的能力不强,水土流失严重。基于对当地农民现有耕作习惯的调查,介绍了“大横坡+小顺坡”耕作模式的结构,并对该模式具体的功能进行了论述,同时针对小顺坡坡长随意的问题提出了改进方案。
The extensive steep slopes of cultivated land in the upper reaches of the Yangtze River are not only the basis for the survival of local peasants but also an important complement to the regional self-sufficiency of food and the national food security. For a long time, the cultivated land on sloping arable land in the upper reaches of the Yangtze River has been extensively cultivated. The land productivity and labor productivity are low. The ability to resist natural disasters such as drought and flood is not strong and soil erosion is serious. Based on the survey of the existing farming habits of local farmers, this paper introduced the structure of the “Grand Slopes + Xiaoshulope” tillage model and discussed the specific functions of the model. At the same time, Proposed improvement program.