【摘要】 本文以息烽县为代表论述了喀斯特环境农业生产的气候和土地资源特点，探讨了喀斯特生态环境粮食作物生产能力估算模型的建立、修正和应用及土地人口容量，认为限制喀斯特生态环境粮食作物生产能力的主要因子是土肥和水分条件。要改善喀斯特生态环境状况，必须增加农田投入，加强林业和水利设施建设，严格控制人口增长速度和对超载人口实行迁移更多还原

【Abstract】 This paper discusses the climatic and land resource conditions of agricutural production of Xifeng County,the representative of karst environment,and probes into the establishment,revision and application of a model for estimating grain potential productivity and population carrying capacity of land resources in karst ecologic environment. The conclusion is that the main factors that restrict the grain crops productivity karst ecologic environment are soil,fertilizer and moisture. In order to improve karst ecologic environment,the investment in farm land should be increased,construction of forestry and water conservancy projects enlarged,the population growth controlled and the overcarrying population removed.更多还原