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泡桐是我省大力推广栽植的速生优质用材树种.惟封顶落叶较迟,致使顶芽及其下部1—2对腋芽组织不充实,抗寒性能差,不易越冬而死亡,来年则由顶芽以下的第2—3对腋芽萌发成对生侧枝,形成假二叉分枝,造成主干低矮,木材经济价值降低,出材率不高等缺陷.为了克服这一缺点,各地在泡桐生产实践中创造了不少培育高
Paulownia is vigorously popularized in our province planting high-quality timber species, but the deciduous deciduous late, resulting in the lower part of the top bud and its 1-2 pairs of axillary bud tissue is poor, poor cold resistance, not easy to win over the winter, the following year from the top bud Of the 2-3 pairs of axillary buds into the growth of adult collateral, the formation of false bifurcation, resulting in low trunk, timber economic value is reduced, the yield is not high defects.In order to overcome this shortcoming, all in Paulownia production practice to create A lot of nurturing high