棉铃虫病毒杀虫乳悬剂的生产及其药效试验

Production and Effectiveness on the New Formulation of Heliothis Virus(NPV)Pesticide──Emulsifiable Suspension

成功研制出棉铃虫病毒（ＮＰＶ）杀虫乳悬剂，改进了生产工艺和设备，建立了棉铃虫的室内品系，提高了生产效率，建立了产品的检测方法，提高了产品质量，促使棉铃虫病毒杀虫剂商品开发获得成功。大田试验证明，病毒乳悬剂的防治效果，相当于当前推广的化学农药，优于原病毒可湿性粉剂。相同剂量（０．５３一１．０７×１０（１０）ＰＩＢ／公顷）的病毒乳悬剂可使虫口平均减退９１．７％，而病毒可湿性粉剂为８３．７％。

t is the first time in china that the study of an insect virus gains commercial successes.This is owlng to the development of a new formulation──emulsifiable suspension, the im-provement of tectinology and facilities,which resulted in raising production efficiency and re-ducing cost. In this paper the establishment of Heliothisarmigera colony,the large-scale rear-ing, the NPV replication,processing of viral emulsifiable suspension, product inspection andfield effectiveness are reported. The effectiveness of Heliothis viral emulsifiable suspensionwas at least equivalent to that of the recommended chemical insecticides,and superior to thatof viral wettable powder. By using 1.2-2.4×10(12)PIB/ha,the pest population was reducedby an average of 9 1.7%,while is was reduccd by an average of 83.7%when using the wet-table powder at the same dosage.