丹红杨定向培育技术研究

Research on Directive Cultivation Technology of Populus deltoides cv.‘ 55/56’

摘要:

摘要：以杨树不同径级材标准和单位面积蓄积生长量为依据，确定丹红杨适宜的初植密度；通过数量成熟与工艺成熟年限分析，确定丹红杨最适采伐年限。结果表明:培育丹红杨大径材，初植密度28～33株/666.7 m2为宜，9年采伐；中径材初植密度42～56株/666.7 m2为宜，7年采伐；小径材初植密度≥67株，5～6年采伐。

Abstract:

Abstracts:Based on different diameter class material standard and volume growth per unit area,we determined the Populus deltoides cv.‘55/56’ suitable initial planting density by quantitative maturity and technical maturity period analysis.Then confirmed that its suitable cutting period.The results showed that its big diameter wood the initial planting density ranged from 28～33 seedlings 666.7 square meters were appropriate,the ninth year were cutting;its middle diameter wood the initial planting densityranged from 42～56 seedlings 666.7 square meters were appropriate,its middle diameter wood the initial planting density more than or 67 seedlings after five to six years were cutting.