摘要
通过对不同密度的 4个试验组杨树扦插育苗试验 ,结果表明 :密度为 4 4 4 4株 /6 6 7m2 的试验组产合格苗最高 ,合格小钻杨占总产苗量的 81% ,辽宁杨占 75 % ;3333株 /6 6 7m2 和 5 5 5 5株 /6 6 7m2 两种密度分别显得偏小和偏大 ,产合格苗比较低 。
In this paper, experiments of cutting in 4 plots of different densities of poplar seedlings were conducted. Results showed that the qualified seedlings in the density of 4 444 plants/667m2 were most , among which qualified seedlings of Xiaozuan held 81% of total production of seedlings; Liaoning poplar occupied 75%.The two densities of 3 333 plants/667m2 and5 555plants/667m2 appeared smaller and bigger, and produced qualified seedlings were less.
出处
《防护林科技》
2004年第z1期41-42,共2页
Protection Forest Science and Technology
关键词
杨树
育苗密度
Poplar
cultivation density
