观赏型南方红豆杉夏季修剪效应研究

在观赏型南方红豆杉上进行不同强度的修剪试验。结果表明:修剪能够显著性促进主枝粗度、次级枝平均长的生长及三级侧枝芽萌发;春梢短截1/3能够显著性增加次级枝数量、次级枝总长、均长,对新枝总长度无显著性影响;春梢短截1/2、春梢短截2/3能够显著性减少次级枝数量及新枝总长度。

Study on Landscape Type Taxus chinensis var. mairei Response to Summer Pruning

The Landscape type taxus chinensis var. mairei trees were tested to study the responses to different summer prun- ing methods . The results showed that the different summer pruning methods have significant promotive among the gowth of main branch diameter, the average length of secondary lateral branch and the germination of tertiary branch bud. The spring shoot truncateion （1/3） treatment have signifieant promotive among the number of secondary lateral branch,the total length of secondary lateral branch , the average length of secondary lateral branch with CK, the spring shoot truncateion （ 1/3 ） treatment have no signifieant promotive on the total length of branch with CK. ;their spring shoot truncateion （1/2,2/3） treatments have signifieant repressive among the number of secondary lateral branch and the total length of branch with CK.