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前言遵照毛主席“有了优良品种,即不增加劳动力、肥料,也可获得较多的收成。”的英明教导,我校于1964年开始杨树的引种工作,至1967年,先后共引进外地类型90余种。1966—1967年,分别将这些类型定植于校园中作造林观察。由于当时受刘少奇修正主义教育路线的影响,科研走的是专家路线,试验工作局限在学校的小天地中,脱离社会生产,脱离地区实际,工作上冷冷清清,成绩很小。1972年至1973年在无产阶级文化大
Foreword According to Chairman Mao’s wise teaching that “we have good varieties, that is, we can get more crops without increasing labor force and fertilizer,” our school started the introduction of poplar in 1964. By 1967, we introduced a total of More than 90 types. From 1966 to 1967, these types were planted on the campus for forest observation. Due to the influence of the revisionist education line of Liu Shao-chi at that time, the scientific research was guided by an expert line. The experimental work was confined to the small world of schools. It broke away from social production and was deserted from the actual conditions of the area. From 1972 to 1973, the proletarian culture was great