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杨树是我区主要速生造林树种之一.大力推广杨树良种对于实现我区造林良种化具有重大意义.建主杨树良种采穗圃就是大力繁殖杨树良种,加快杨树良种推广步伐的重要措施,也是为大规模造林提供良种壮苗的重要途径.杨树良种采穗圃能达到一年建成连年来收的效果.因此,用料少,成本低、产条量高、质量好、稳定件强、见效快,为了实现到八○年各地造林更新所用种苗能有20%采用良种的艰巨任务.要求我们必须尽快的把杨树良种采穗圃建立起来,现将建立的方法和要求如下:
Poplar is one of the main fast-growing afforestation species in our district.It is of great significance to popularize the poplar varieties to achieve the afforestation variety in our district.The popularization of poplar poplars and poplars is to popularize poplar varieties and accelerate popularization of poplar varieties Important measures for large-scale afforestation is also an important way to provide seedling seedlings. Poplar seedling garden can achieve year after year to build the effect of closing. Therefore, less material, low cost, high yield, good quality, The stabilizers are strong and quick, and in order to achieve 20% of the arduous tasks of using improved seed varieties in afforestation and rejuvenation by the year of 1980. We must urgently establish the poplar seedling cultivation center and the method and Requirements are as follows: