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作 者 ：贾云 齐乐贤 原戈

期 刊 ：林业科学 1991年 27卷 1期 页码：41-49

关键词：红松落针病；生态条件；分析；

Keywords:Korean pine needle cast, Ecological conditions, Analysis,

摘 要 ：本文通过26块典型样地的调查和2—3年的固定样地气候、Lophodermium maximum子囊孢子飞散规律的观测,其数据经不同的方法处理,结果表明:红松落针病的发生随海拔增高、林龄增加感病程度下降,而随林分密度增大感病程度上升。通过对土壤养分含量及pH值分析,表明:落针病的发生与林地养分含量的多少关系不大。L.maximum子囊孢子的飞散主要受气候因子控制,日均温度≤23℃、日均相对湿度≤90%、日均绝对湿度≤24mb时是子囊孢子飞散的最适时机。日降雨量≤0.5mm时对孢子的飞散有抑制作用。防治该病的重点应放在林分平均高不超过10m的中、幼龄林。

Abstract:According to the investigation of main forest factors on 26 typical plots and the observation of climatic factors and ascospores dispersion way lasting 2—3years,the results analysed with different mathematical methods show that the disease incidence of Korean pine needle cast decreases along with higher elevation and elder forest age, and increases with thicker forest density.By means of the analysis of soil nutrition and pH value,it is indicated that the disease occurrence is not significantly related with nutrition of forest land. The dispersing amount of ascospores is controlled by climatic factors. ≤23℃ daily mean temperature, ≤90% daily mean relative humidity, and≤24 mb daily absolute humidity are the optimum conditions of ascospores dispersion. When the daily precipitation is≤0.5mm, the ascospores dispersion is restrained. It is suggested that controlling this disease should be put stress on the middle and young forest under 10m.

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