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喀斯特环境是一种脆弱性很强的生态环境,在贵州集中连片分布,碳酸盐类岩石出露达13×104km2,占全省土地总面积的73.6%,是我国喀斯特地貌最发育的省份。论述了喀斯特生态环境的脆弱性及其土壤障碍因素,提出大量施用有机肥,合理施用石灰,调整种植结构,扩种绿肥和防治水土流失是喀斯特地区土壤培肥的主要措施,对西部大开发与退耕还林还草的实施有一定指导意义。
Karst environment is a kind of fragile ecological environment. In Guizhou, with concentrated contiguous distribution, carbonate rocks are exposed to 13 × 104km2, accounting for 73.6% of the total land area of the province, which is the most developed province of karst landforms in China. This paper discusses the fragility of ecological environment in Karst area and its obstacles to the soil. It is proposed that mass application of organic fertilizer, rational application of lime, adjustment of planting structure, expansion of green manures and prevention and control of soil erosion are the main measures for soil fertility improvement in karst areas. The implementation of returning farmland to forest or grass has some guiding significance.