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我国山地面积约占总面积66%,加上平原区大于5的坡地,坡地总面积可达70%以上。科学开发和合理利用我国大面积的山坡地,对解决十一亿人口的吃饭问题与现代化农业建设,都具有十分重要的意义。在坡地条件下,制约土壤肥效及生产率的主要矛盾是土壤自身的稳定与流失的矛盾。这一对矛盾具体表现为坡面土壤抗蚀力与水流冲力之间的关系。提高抗蚀力和降低冲力的各种措施,都有利于增加土壤肥效和提高生产率。
China’s mountainous area accounts for about 66% of the total area, with more than 5 plain areas of the plains, the total area of up to more than 70% slope. Scientific development and rational utilization of large areas of hillsides in our country are of great significance to solving the problem of eating 1.1 billion of the population and building a modern agriculture. Under slope conditions, the main contradiction that restricts soil fertility and productivity is the contradiction between the stability and loss of the soil itself. The contradiction between the concrete manifestation of slope soil erosion resistance and the relationship between the impact of water flow. Various measures to improve the erosion resistance and reduce the momentum are beneficial to increase soil fertility and increase productivity.