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闽南花岗岩侵蚀区土壤退化与治理

The Degradation and Harness of Soil Fertility in the Granite Eroding Area of South Fujian
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摘要 闽南侵蚀面积达5000多平方公里,占土地面积20%强,人口密度约450人/km^2。水土流失原因除了自然因素外,更主要的是人口密集,由于生产、生活和建设的需要,严重地破坏了植被,造成人为水土流失,致土壤浅化、沙化与瘠瘦化。治理经验证明:开发性治理,变水土流失区为经济作物区,不但防止了水土流失,而且扩大耕地面积并恢复提高地力,创造土地永续利用的条件。治理原则和方法是:统一规划,因地制宜,合理布局,建设成商品化的果林基地;长短结合,提高坡地利用率;工程与生物措施相结合;加强土壤管理,提高土壤肥力,增强生产后劲。 The soil erosion area of South Fujian is over 5 000km2, being slightly more than 20% of the total land, the population density is about 450 persons / km2. Except natural factors, heavy population density accounts to the main reason of soil erosion. Owing to humen activities,vegetation has been destroyed, soil erosion has occured. Therefore, soil layer becomes thin, soil texture becomes sandy and soil fertility becomes poor. The experiences have proved that by taking developing control measures, not only soil erosion is controlled but also cultivated area could be expanded and soil fertility is restored and improved. As a result, the continuous utilization conditions of land is created. Harnessing ways are that 1, unified planning suited measures to local, conditions, rational distribution; 2, setting commercialized base of fruit and woods raising hilly land utilization rates; 3, combining engineering practices with biological measures; 4, strengthening soil regulation, increasing land productivity.
出处 《农业工程学报》 EI CAS CSCD 北大核心 1992年第2期74-79,共6页 Transactions of the Chinese Society of Agricultural Engineering
关键词 土壤肥力 退化 土壤 治理 Soil fertility, Degradation, Soil management, harness.
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