松树枯梢病的发生与土壤条件的关系  

Relationship Between the Epidemic of Pine Shoot Blight and Soil Element

作　　者：廖太林[1] 叶建仁[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2005年第6期126-128,共3页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家科技攻关项目(96-05-04-04)

摘　　要：松树枯梢病的发生与土壤条件关系密切.砂质土和粘质土壤上生长的松树病害发生严重,而相同条件下壤土上生长的松树,病害发生要轻.土壤水分状况对病害的发生起着重要的主导作用,相对长期土壤水分亏缺的土壤上生长的松树其病害明显严重.土壤厚度、肥力状况及疏松度对病害发生的影响相对要小些.20～30 cm层的土壤中有效磷含量与病情指数呈正相关,而水解氮、有效钾、土壤密度和土壤pH与病情指数的相关性不强.Pine shoot blight caused by Sphaeropsis sapinea is a kind of important disease in China. There is a close relation of soil element to the occurance of pine shoot blight. Severe disease development usually is in sand soil or clay soil. The soil water content is a very important actor. The water stress is advertage to the disease epidemic. By the analysis of the physical and chemical composition of the soil, the disease index is positively correlated to the content of available phosphate.

关 键 词：松树枯梢病 流行规律 土壤因素 

分 类 号：S763[农业科学—森林保护学]