人类的生产活动,对于土壤的形成作用和发展方向,对于土壤质和量的改变,都具有重大影响。就贵州的情形来说,解放前,由于滥伐森林、盲目开垦和粗放耕作的结果,使土壤肥力日趋下降,低产田的面积有增无已。解放后,在党的领导下,摧毁了封建统治,改变了生产关系,劳动人民成为土地的主人,因此改造自然的能动性得到充分发挥,羣众以冲天的干 Human production activities, for the role of soil formation and development direction, for the quality and quantity of soil changes have a significant impact. In the case of Guizhou, before the liberation, due to the deforestation, the results of blind cultivation and extensive cultivation, the soil fertility was declining and the area of ​​low-yield fields was increasing. After the liberation, under the party’s leadership, the feudal rule was destroyed, the relations of production were changed and the working people became the masters of the land. Therefore, the initiative of transforming nature was fully shown and the masses were recklessly exalting