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赤松毛虫是松林的一大害虫,在我市分布广泛,为害严重。目前,某些生物防治成本较高,速度较慢,不易被群众掌握。特别是我市许多松树林相残破,林分郁闭度小,不利于天敌繁衍、生存。因此,化学药剂喷雾仍被广泛采用。为了筛选高效率、成本低的化学药剂,我们于1985年春季、秋季,在青龙县王子店将溴氰菊酯、速灭杀丁、除虫菊酯、杀灭菊酯、佐罗钠、久效磷六种药剂进行了林间喷雾防治试验。
Red pine caterpillar pine forest is a major pest, widely distributed in the city, serious damage. At present, some biological control costs are high, and they are not easily mastered by the masses. In particular, many of our city pine forest broken, canopy density closed, is not conducive to natural enemy reproduction, survival. As a result, chemical sprays are still widely used. In order to screen high-efficiency, low-cost chemical agents, we in the spring of 1985, the fall of Prince County store in Qinglong County, deltamethrin, speed off Ding, pyrethrin, fenvalerate, Zorro sodium, monocrotophos Six kinds of medicaments for forest spray prevention and control experiment.