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单季杂交晚稻孕穗期稻纵卷叶螟Cnaphalocrocis medinalis Guenée发生不整齐,为害重,在主治药剂氟虫腈即将禁用之际,急需防治高龄幼虫的长效药剂,酰胺类农药是满足这一条件的新一代农药。3种酰胺类农药试验结果,在单季稻孕穗期防治稻纵卷叶螟,20%氟虫双酰胺(WDG)150g/hm2处理速效性与持效性表现最好,药后3d防效达90.3%,药后15d防效高达96.2%;20%氯虫苯甲酰胺(SC)150mL/hm2处理速效性略低于氟虫双酰胺,持效接近,药后3d、15d防效分别达75.2%、91.2%;40%氯虫·噻虫嗪(WDG)120mL/hm2处理速效介于氟虫双酰胺和氯虫苯甲酰胺之间,持效略低于前二者,药后3d、15d防效分别为83.2%、88.3%。对照药剂5%氟虫腈(SC)750mL/hm2和90%杀虫单3000g/hm2处理药后3d、15d的防效均低于上述3种酰胺类新药剂。保叶效果以氯虫苯甲酰胺、氟虫双酰胺处理最高,药后15d保叶率分别为83.6%和85.0%,二者无显著差异,其次为氯虫·噻虫嗪处理为59.6%,3种酰胺类新药剂保叶效果均显著高于对照药剂氟虫腈和杀虫单。结果表明,3种酰胺类农药孕穗期防治稻纵卷叶螟的药效、持效性和保叶效果均高于当前主治药剂氟虫腈、杀虫单,可在生产上推广应用。
Monochamus alternatus late rice at the booting stage of the Cnaphalocrocis medinalis Guenée occurred irregular, as the weight of the main agent of fipronil is about to ban the occasion, the urgent need to prevent and control of the elderly larvae long-acting agents, amide pesticides to meet this condition A new generation of pesticides. The results of the three kinds of pesticides showed that the control and control effect of 150g / hm2 20g flubendiamide (WDG) was the best, the control effect was 90.3% , The control effect was up to 96.2% at 15d after drug treatment. The curative effect of 20% chloramphenicol (SC) at 150mL / hm2 was slightly lower than that of flubendiamide. The efficacy was close to 75% 91.2%; 40% chlorantraniliproxil (WDG) 120mL / hm2 treatment between flubendiamide and chlorantraniliprole between the effect was slightly lower than the former two, 3d, 15d after the drug effect Respectively 83.2% and 88.3%. The control efficacy of 5% fipronil (SC) 750mL / hm2 and 90% insecticide single 3000g / hm2 treatment 3d, 15d after the control effect was lower than the above three kinds of amide new agent. Leaf Paul effect with chlorantraniliprofen, flubendiamide treatment highest 15d after the leaf warranty rates were 83.6% and 85.0%, no significant difference between the two, followed by chlordiazepoxide thiamethoxam treatment was 59.6% The preservative effect of three new amides agents was significantly higher than that of the control agents fipronil and insecticide alone. The results showed that three kinds of amide pesticides booting at the booting stage of the rice leaf roller efficacy, retention and leaf effect are higher than the current main agent fipronil insecticide single, can be applied in production.