河北省张北县中心林场,从1958年开始进行杨树嫩枝育苗试验,结果都失败了。广大职工带着这个问题学习了毛主席的光辉著作《愚公移山》和《人的正确思想是从那里来的?》,解放了思想,克服了困难,1965年终于找到了失败原因,想出新的试验方法,获得了成功。他们说,这是伟大毛泽东思想的胜 Zhangbei County Center Farm in Hebei Province, from 1958 to poplar shoot nursery test results have failed. With this question, the majority of workers and staff took this opportunity to study Chairman Mao’s glorious book, “Yugong Yishan,” and “where did the correct human thought come from?”, Liberated his thinking and overcame the difficulties. In 1965, he finally found the reason for the failure and came up with a new The test method has been successful. They said this is the victory of the great Mao Tsetung Thought