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我们从1986年起,在万年县大黄乡一万亩马尾松封山育林和林相改造基地上,以青虫菌6号细菌农药和白僵菌粉为主,进行马尾松毛虫防治试验积大而积防治,在大黄地区控制了一个大发生年,现初报如下。一、基本情况大黄乡是六山一水二分田的低丘陵地区,共有11个自然村,山林面积3.5万亩,其中马尾松2.9万亩,绝大部分是1 960年以后营造。过去为松毛虫常灾区,迄未郁闭成林。1 982—83年松毛虫大发生,喷洒大量化学农药,1 985年以白僵菌粉、青虫菌液为
We started from 1986 on 10000 mu of Pinus massoniana afforestation and forest transformation base in Daban Township, Wannian County, mainly used the bacterial pesticides and Beauveria bassiana powder of Caterpillar fungus No. 6 for prevention and control of Masson pine caterpillar , In the rhubarb area control a big year, are reported as follows. First, the basic situation Dazhuang is a low mountainous area of six mountains and one water two sub-fields, a total of 11 villages, mountain forest area of 35000 acres, of which 29000 acres of Masson pine, the vast majority is created after 1960. In the past, the area affected by pine caterpillars was closed to forested lands. Pine caterpillar occurred in 982-83 years, sprayed a large number of chemical pesticides, beiton fungus powder in 1985, the worm was