日本落叶松种子园大龄母树去顶修枝试验初报

Pruning effects on old seed tree in seed orchard of Larix kaempferi

摘要:

摘要：以长岭岗林场日本落叶松种子园大龄母树为研究对象，开展去顶及修枝试验，结果表明：去顶修枝对促进日本落叶松母树新生枝条萌发的效果显著，不同修剪强度之间萌条数量和质量差异显著，修剪强度越大新生萌条数量和质量越好；修剪后第4、5年雌雄球花数量均很少，与对照相当或少于对照，去顶修枝对促进花芽分化作用不明显。

Abstract:

Abstracts:This paper studied the pruning effects on old seed tree in seed orchard of Larix kaempferi in Changling Hillock Forest Farm.The results showed that the effect of pruning on new branch sprouting was significant.The quantity and quality of coppice shoot was significantly different within different treatments.The more we pruned, the more it sprouted.The number of male and female cone after the pruning treatment in the fourth and fifth year was both few and less than that of the check.In addition, pruning had little effect on promoting bud differentiation.