摘要
对安徽省火炬松林分密度与衰退病的感病指数和土壤含水量的关系分别进行了研究 ,结果表明 :林分密度与衰退病和土壤含水量关系十分密切 ,在一定的树龄和密度范围内 ,林分密度与衰退病的病情指数呈正相关 ;与土壤含水量 (在干旱条件下 )呈负相关。因此 ,在火炬松的经营管理中 ,进行科学合理的抚育间伐是促进林木生长。
In this paper the relationships between forest density and index of decline disease, and soil moisture content were studied and determined in Pinus taeda plantations in Anhui province. The results showed that there are a closely correlation between them. The forest density is positively correlated with index of the disease, and negatively correlated with soil moisture content on a given tree age and site type. Thinning, therefore ,could reduce the index of disease and increase the growth of Pinus taeda.So scientific thinning should be used as a control measure of the disease in forest management.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2001年第3期251-254,共4页
Journal of Anhui Agricultural University
基金
国家教育部资助出国留学人员基金项目
关键词
火炬松
衰退病
林分密度
土壤含水量
Pinus taeda
decline disease
forest density
soil moisture content
