毕节地区土地资源的退化及防治对策

The Land Degration and Its Countermeasures of Preventiom and Control in Bijie Prefecture

位于黔西北云贵高原屋脊地段的贵州省毕节地区，近年来水土流失严重，土地石化、地力减退、下等田土增多，造成农业生产停滞不前。针对这种情况，笔者在分析土地资源退化原因的基础上，提出了实行耕地资源保护政策，改造坡耕地，开展以小流域为单元的综合治理，调整用地结构和控制人口增长等防治措施。

Bijie prefecture of Guizhou province is situated on the roof of yunnan-Guizhou plateau.In recent years,soil and water loss in this area is very severe,which results in desertification,de-creese of soil fertility and increase of the area of lower-yield farmland,the phenomenon of pollutingand occupying farmland against the law is widespread the above factors hinder the development ofthe agricultural productivity,Based on analysis of the resons of destruction of land resources.theauthor puts forward the protection policy of farmland resources and a serious of countermeasures,such as huilding terraces in the slop farmland,carrying out comprehunsive control taking small wa-tershed as a unit,regulating land utilization constructure and controlling the population increase.