涂干剂防治萧氏松茎象的研究

根据萧氏松茎象产卵的生物学特性,用几种涂干剂涂刷湿地松,结果表明:用生石灰、硫磺、水配成的涂干剂防治效果达80%以上,绿色威雷则高达95%,其有效期均长达一年;用前者开展林间大面积防治,防效80%,防治平均成本0.106元.株-1。用乳胶漆把树干涂成不同颜色,结果表明:防治效果可达70%-95%,黑色、褐色的防效高于黄色和白色,萧氏松茎象对颜色的选择更趋向于偏暖的色彩。

Study on the trunk coating insecticides control of Hylobitelus xiaoi

Due to the oviposition behavior of Hylobitelus xiaoi,the trunk coating method was used to test the insecticide control effect on the Pinus elliottii forests.Results indicated that the control effect of the mixture solution of lime and sulfur was higher than 80%;and its cost was about 0.106 yuan/per tree.Results also indicated that the control effect of luseweilei microcapsule was higher than 95%.The control available period of these methods was more than one year.The control effects due to different trunk paint colors,namely,black,brown,yellow and white,were 70%-95%.