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毛白杨生长迅速、材质好,高大通直,寿命长,用途广,是北方平原地区营造用材林、防护林和“四旁”绿化的重要树种,深受广大群众喜爱。毛白杨扦插育苗虽有省种条、省工、技术简单等优点,但一般扦插成活率不高。为了大力发展毛白杨,1976年我们利用到河北石家庄地区南化林场学习的良好时机,对提高毛白杨扦插成活率的问题,进行了初步的试验研究。现仅将效果较好的温床扦插育苗介绍于下,供有关单位参考。一、试验过程及方法(一) 插穗截制:试验所用种条为1975年秋苗木出圃或选大苗移植后剩下的1年生弱苗苗干,平均高144.4厘米,平均地径1.10厘米。种条经秋季入土埋藏后,于1976年3月上旬取出。随后剪截成长度为20厘米、上切口平、下切口为马耳形的插穗,同时将属于同一节段(即在种条上部位相同) 的插穗分别归类,插穗第一至第五节段的基径为:0.9-1.5、0.8
Populus tomentosa rapid growth, good material, tall and straight, long life, wide use, is the northern plains to create timber forests, shelterbelts and “all around” important tree species, by the masses favorite. Populus cuttings nursery Although the provincial species, labor, simple technology, but the general survival rate is not high cuttings. In order to vigorously develop Populus tomentosa in 1976, we used to Shijiazhuang, Hebei Province, a good opportunity to learn from the forest, to improve the survival rate of Populus tomentosaurus cuttings, conducted a preliminary experimental study. Now only better effect of hotbed cutting seedling introduced below, for the relevant units for reference. First, the test process and methods (A) cutting cuttings: The test species used in the autumn of 1975 autumn seedlings nursery or selection of the remaining one-year-old seedlings after transplanting weak seedlings dry, an average of 144.4 cm high, with an average diameter of 1.10 cm. Seeds buried by the fall after the buried in early March 1976 removed. Then cut into length of 20 cm, the upper incision level, the lower incision for the mallet-shaped cuttings, at the same time belonging to the same section (ie, the same parts in the same section) cuttings were classified, cuttings first to fifth section Sections of the base diameter: 0.9-1.5,0.8