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松干蚧、松毛虫是我省松林的两大害虫。在有松干蚧发生的地区,大部有松毛虫。松干蚧寄生在松树枝、干上,取食树液;松毛虫在松树上,取食针叶。因“两虫”生活习性不同,防治方法也不一致。用氟乙酰胺涂坏,对松干蚧有较好的防治效果,但不能治松毛虫;用松毛虫杆菌、赤眼蜂或飞机喷洒化学药剂防治松毛虫,而又不能兼治松干蚧。由于缺乏防治“两虫”的综合措施,给林业生产造成了很大损失。
Song Kuwana, pine caterpillars are the two major pests pine forests. In areas where the occurrence of Song Kuwana, most of the pine caterpillars. Pine dry Kuwana parasitic pine branch, dry, feeding sap; pine caterpillars in the pine, feeding needles. Due to “two insects” different habits, methods of prevention and treatment are not consistent. Fluoroacetamide painted bad on the good control of pine scales Kuwana effect, but can not cure Dendrolimus; Trichinella spiralis, Trichogramma or aircraft spraying chemical agents to prevent pine caterpillars, but not both pine Kuwana. Due to the lack of comprehensive measures to prevent and control “two worms,” great losses have been caused to forestry production.