论文部分内容阅读
湖州市是全国蚕桑重点产区。为控制近几年猖獗回升的水稻三化螟和保障蚕桑生产安全,1987年起引进5％杀虫双颗粒剂作治螟效果试验并已大面积示范推广。 1988年小区药效试验结果表明:每亩用5％杀虫双颗粒剂1kg,于卵孵化高峰期用药,防治连晚秧田二代三化螟,保苗效果89.92％;而50％甲胺磷乳油100ml只有49.62％;杀虫双防治连晚大田三代三化螟的保苗效果93.75％,兼治稻纵卷叶螟效果100％。50％甲胺磷乳油100ml用药2次的保苗效果75％,用药1次的40.63％。大田示范每亩用5％杀虫双颗粒剂1kg,孵化高峰期防治对早稻一代三化螟的保苗效果98.13％,50％甲胺磷乳油100ml42.06％;5％杀虫双颗粒剂1.5kg,孵化高峰期防治连晚三代三化螟枯心效果96.79％,防治白穗效果95％,殘效期长达15天以上,而用50％甲胺磷乳油100ml 2次的防枯心效果58.57％,防白穗效果46％。
Huzhou City is the key sericulture producing areas. In order to control the rampant rice stem borer in recent years and to ensure the safety of sericulture production, in 1987 the introduction of 5% insecticidal double granules for the control of rice borer effect test and has been a large area demonstration and promotion. 1988 Community Efficacy Test results show that: 5% per mu with insecticidal double granules 1kg, the peak egg incubation period, the prevention and control even late third generation rice stem borer seedling, seedling effect 89.92%; and 50% methamidophos 100ml only 49.62%; insecticidal double prevention and control even late three generations of striped stem borer 93.75%, and the effect of rice leaf roller effect 100%. 50% methamidophos 100ml medication 2 times the seedling effect 75%, medication 1 times 40.63%. Daejeon demonstrations per mu with 5% insecticidal double granules 1kg, the peak of hatching prevention and control of the generation of three generations of rice in the early generation of rice borer effect of 98.13%, 50% methamidophos 100ml42.06%; 5% insecticidal double granules 1.5kg , The hatch peak prevention and control with even three generations of cucumber borer effect of 96.79%, prevention and treatment of white spike effect of 95%, residual effect of up to 15 days or more, with 50% methamidophos 100ml 2 times the anti-withered effect of 58.57% , Anti-white spike effect 46%.