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对湿地松和火炬松枯梢病与立地条件和林分因子的相关性进行研究表明,树种、成土母质、土壤、林龄和雪压与松树枯梢病的发病率显著相关,其偏相关系数依次为树种>成土母质>土壤>林龄>雪压;树种、成土母质、土壤、林龄和造林质量与病害严重程度密切相关,其偏相关系数依次为树种>成土母质>土壤>林龄>造林质量。各因子与发病率的复相关系数为0.8382098,与病害严重程度的复相关系数为0.8687435。对此病害,宜采用综合技术措施进行防治。
The correlation between the blight of Pinus elliottii and Pinus taeda and site conditions and stand factors was studied. The results showed that the tree species, soil parent material, soil, age and snow pressure were significantly correlated with the incidence of pine blight and the partial correlation The coefficients were in order of tree species> soil parent material> soil> age> snow pressure. The tree species, soil parent material, soil, age and afforestation quality were closely related to the severity of the disease. The partial correlation coefficients were tree species> soil parent material> soil > Age> Afforestation quality. The complex correlation coefficient between each factor and incidence was 0.8382098, and the complex correlation coefficient with disease severity was 0.8687435. For this disease, should adopt comprehensive technical measures for prevention and treatment.