松突圆蚧对马尾松枝生长影响的研究

Influence of Hemiberlesia pitysophila Takagi on the Needle Growth of Pinus massoniana

研究了受松突圆蚧为害但未放蜂、放蜂和未受松突圆蚧为害的马尾松枝条生长情况以及松突圆蚧种群密度．结果表明，放蜂区与无松突圆蚧为害区松枝的生长长度相近，差异不显著；放蜂区与被害而未放蜂区的松枝生长长度差异极为显著．证明引进和助迁花角蚜小蜂防治松突圆蚧，保护了马尾松的生长，防效显著．还根据松枝生长的调查，建立了关于松突圆蚧种群密度对马尾松枝条生长影响的数学模型．

This paper deals with the influence of Hemiberlesia pitysophila Takagi on the needle growth of Pinus massoniana and the population dynamics of Hpitysophila. The results showed that the introduction and augmentative release can control Hpitysophila, and protect the needle growth of Pmassoniana. Mathematical models on the relationship between population density of Hemiberlesia pitysophila Takagi and branch length of Pinus massoniana were also established based on investigation data in various fields.