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我们大沙河林场遵照毛主席关于“阶级斗争、生产斗争和科学实验,是建设社会主义强大国家的三项伟大革命运动”的教导,从一九六四年开始引种林木良种,开展了以速生、丰产、优质为目的的林业科学实验,初步实现了育苗、造林良种化和品种化,有力地促进了林业生产的发展。试验表明,在比较干瘠的沙荒滩上,科伦158(欧美杨系)7年生平均高7.9米,胸径10.6厘米,而同龄加杨高4.5米,胸
In accordance with Chairman Mao’s teachings on “Three Great Revolutionary Movements in Building a Strong Socialist Country” in “Class Struggle, Production Struggle and Scientific Experiments,” our Dashahe Forestry Center started to introduce improved varieties of forest trees from 1964, Forestry science experiments with high yield and high quality, and initially realized seedling raising, afforestation variety and variety, effectively promoted the development of forestry production. Experiments show that in the relatively barren sandy wasteland, Kelun 158 (Europe and the United States Department of Yang) 7-year-old average 7.9 meters high, diameter 10.6 cm, while the same age Yang Yang 4.5 meters, chest