论文部分内容阅读
良种壮苗是造林六项技术措施中的重要一环,是林业生产的物质保证。设置母树林是林木良种繁育,改良品种工作的重要方向之一。我场广大革命职工,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”的伟大教导,于1962年选择4年生杉木幼林40亩改造为母树林,取得初步效果。目前每亩留母树25-30株。去冬在母树林内采种,单株采果最多达40斤,平均每株采果20斤,每亩采果600斤,出纯籽32斤,出籽率达5.4%,种子室内发芽率达61%。
Strong seedling is afforestation six technical measures an important part of the forestry production material guarantee. Setting the parent forest is one of the important directions for planting and improving varieties. Our broad revolutionary workforce, in accordance with the great teaching of Chairman Mao, “with excellent varieties, that is, without additional labor, fertilizers, and more harvests,” chose to transform 40 years of 4-year-old Chinese fir young forest into a mother tree forest in 1962, Initial effect. At present, there are 25-30 mother trees per mu. Go winter in the mother tree planting, single fruit picking up to 40 pounds, an average of 20 pounds of fruit picking per plant, fruit picking 600 pounds per acre, 32 kg of pure seeds, seed yield of 5.4%, seed germination rate of indoor 61%.