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古田县大桥镇茶场一九八四年133.6亩茶园发生茶毛虫为害,其中严重者38亩,古田县茶业公司派出技术人员,使用福建省茶科所提供的六十克茶毛虫核型多角体病毒毒尸,播毒复制毒尸生产病毒进行防治。病毒的生产:(1)为田间采集四、五龄幼虫,室内感染后收集的虫尸;(2)选用田间四、五龄高密度虫源,喷洒病毒及时回收感染死亡的虫尸。然后将茶毛虫毒尸加少许清水捣碎,充分磨细,经双层纱布过滤,亩加清水150—200市斤常规喷雾。一般四、五龄感病虫尸每头约含5亿个多角体,10头虫尸约重一克,每亩茶园用50—
Daqiao Town, Gutian County Chachang In 1983, 133.6 mu tea caterpillars were damaged in the tea plantations, of which 38 mu were seriously affected. Gutian County Tea Company dispatched technicians to use 60 grams of tea caterpillars nuclear polyhedron Virus poison corpse, virus replication virus production deadly virus control. Virus production: (1) for the field collection of fourth and fifth instar larvae, indoor collection of insect dead body infection; (2) field selection of four or five high-density insect sources, spraying the virus timely recovery dead worm died. Then the tea caterpillar body poison plus a little water mashed, fully ground, gauze filtered through double, plus 150-200 kg mu of water conventional spray. General four, five-year-old disease pest body contains about 500 million polyhedron per head, about 10 grams of dead weight about one gram per acre tea garden with 50-