摘要
以辽北地区美×青、中绥12、银中杨等3种杨树无性苗作为试材,对其生长状况做了6年观测记录,对辽北地区3种杨树培育技术和生长过程进行研究,通过研究造林密度与胸径、材积的关系,试图找出更适宜的造林方法。同时对林内间种农作物做了试验。
Three clonal seedlings （Populus deltoides ×P. cathayana, Zhongsui 12, Populus alba × P. berolinensis ） were screened as materials. Observation data about growth process of 3 kinds of poplar were made for 6 years. Cultivation technique and growth process of 3 kinds of poplar in northern Liaoning were studied. Through studying relationship among planting density, DBH and volume, more optimal afforestation method was attempted to be find. Tests on the companion crops under forests were conducted.
出处
《防护林科技》
2009年第1期22-23,116,共3页
Protection Forest Science and Technology
关键词
杨树
造林技术
生长过程
poplar
afforestation technique
growth process
