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在我国如何通过人工修枝获取树干通直、无节的良材问题,还没有引起生产者们的足够重视,林学家们也一直在探讨之中。生产实践证明,合理的修枝对树木生长是有好处的,除了树干光滑没有死节外,高生长比没修枝的增长10—13%,胸径生长增大12%。但由于对修枝技术没有完全掌握,有的为了单纯取炭材,不分树种、林龄、季节乱修,给树木生长造成很大损失。如不分时间修枝强度过大,树木生长细弱,易引起杨肿茎溃疡病(covy-neum populinum),
In our country, how to obtain the trunk straight through the artificial pruning, the unmanageable quality problem has not caused enough attention from the producers, and the forest scientists have been discussing it all the time. Production practice has proved that reasonable pruning is beneficial to the growth of trees. Except for the trunk is smooth and without dead knots, the growth rate of high growth is 10-13% higher than that of no pruning and the growth of DBH is 12% higher. However, because of the pruning technology is not fully mastered, and some simply to take the carbon material, regardless of tree species, age, season, disorderly repair, causing great damage to the growth of trees. Such as time-sharing pruning strength is too large, thin trees, easy to cause Yang swollen stem ulcer disease (covy-neum populinum)