摘要
Abstract
The central government began to organize farmers to increase grain production through mutual cooperation in order to support national industrialization after 1952, and launch collectivization in order to solve contradiction between measures of grain production and farmers from 1955. When they finished collectivization, Shandong provincial government who hoped to increase grain production started to change farming system. Those measures not only failed to increase grain production, but also resulted in reduction of grain production, and broke ecological balance. That situation changed when the central government took measures after 1961.关键词
农业合作化/耕作制度/肥料/生态Key words
Collectivization/Farming System/Fertilizer/Ecological
