松树枯梢病发生的立地条件及其主要诱因分析  

Analysis of the Main Inducing Factors of the Incidence of Sphaeropsis sapinea

作　　者：叶建仁[1] 廖太林[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业科学》2006年第9期79-82,共4页Scientia Silvae Sinicae

基　　金：国家科技攻关项目"中国南方松树枯梢病综合防治技术"(96 -05 -04 -04)

摘　　要：对福建、江西等地227块松树枯梢病的林分病情标准地进行调查。结果表明:病害的发生与林分及立地因子关系密切。由上杭、连城、永新和安福4县有代表性的49块样地推导出了松树枯梢病的病情指数与林龄、造林密度、郁闭度、土壤质地、土壤湿度、坡位、坡向的生态数学模型:y=41·38 -16·56x11+5·08x21+18·62x31-3·78x41+19·94x51+7·32x61+4·27x62-4·06x71-10·56x72-13·88x73,其偏相关系数分别为0·606 9、0·612 5、0·268 9、0·1789、0·681 1、0·279 0、0·473 7。该模型模内判别准确率为79·59 %,其中病情指数与土壤湿度、郁闭度、林龄和坡位间关系紧密,在0·01水平上显著,它们是松树枯梢病在我国南方发生的主要诱导因子。提出以营林措施为主的生态控制技术。The data analysis of 277 plots in forest farms in southern China indicated the development of Sphaeropsis sapinea is affected by stand and site factors. The ecological model of the shoot blight of S. sapinea was established as follows： y = 41.38 - 16.56x11 ＋ 5.08x21 ＋ 18.62x31 - 3.78x41 ＋ 19.94x51 ＋ 7.32x61 ＋ 4.27x62 - 4.06x71 - 10.56x72 - 13.88x73. In this formula y represents forest disease index and Xll - x73 represent ecological factors （levels） . The partial correlations between the disease index and soil moisture, stand canopy density, stand age and slope lever are significant at P 〈 0.01, and they are the main inducing factors of incidence of S. sapinea in the south of China. Suggestions and measures of ecological control by afforestation were proposed.

关 键 词：松树枯梢病 立地条件 主要诱因 

分 类 号：S434.44[农业科学—农业昆虫与害虫防治]