| 4种杀虫剂对稻纵卷叶螟和二化螟主害代防控效果试验 |
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| 作者姓名： | 赵敏 徐立军 朱霄岚 洪美萍 方雪勇 |
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| 作者单位： | 浙江省桐庐县农业技术推广中心;杭州博润生态农业开发有限公司 |
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| 摘 要： | 【目的】为明确不同杀虫剂对单季稻四(2)代、五(3)代稻纵卷叶螟兼治三代二化螟主害代的防控效果。【方法】对4种杀虫剂防治四(2)代、五(3)代稻纵卷叶螟主害代兼治三代二化螟的田间试验。【结果】每667 m236%抑食肼-茚虫威SC 70 mL、6%阿维-氯苯酰SC 40 mL、5%甲氨基阿维菌素WG10 g 3种处理对单季稻四(2)代稻纵卷叶螟以36%抑食肼-茚虫威SC 70 mL较佳,药后4 d对幼虫校正防效达80.0%,其次为6%阿维-氯苯酰SC 40 mL和5%甲氨基阿维菌素WG 10 g防效分别为66.7%和64.7%,对五(3)代稻纵卷叶螟持效性以6%阿维-氯苯酰SC较好。每667 m236%抑食肼-茚虫威SC 70 mL、6%阿维-氯苯酰SC 40 mL、12%甲维-氟酰胺ME 20 mL对五(3)代稻纵卷叶螟防效均较好,药后7 d对幼虫校正防效分别为76.9%、51.1%、60.0%,药后17 d保叶效果分别达49.3%、38.9%、59.8%,对六(4)代稻纵卷叶螟持效性以12%甲维-氟酰胺ME较好;对三代二化螟主害代兼治防效均较好,株防效分别达78.9%、100%、78.9%,但以6%阿维-氯苯酰SC为最佳。【结论】研究结果可为浙西北单季稻区四(2)代、五(3)代稻纵卷叶螟和三代二化螟主害代科学有效防控提供科学依据。
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| 关 键 词： | 单季稻 稻纵卷叶螟 二化螟 杀虫剂 |
Control Effects of Four Insecticides on Main Pest Generations of Cnaphalocrocis medinalis and Chilo suppressalis |
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| Authors: | ZHAO Min XU Lijun ZHU Xiaolan HONG Meiping FANG Xueyong |
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| Institution: | (Agricultural Technology Extension Center of Tonglu County,Tonglu,Zhejiang 311500,China;Hangzhou Borun Ecological Agriculture Development Co.,Ltd.,Tonglu,Zhejiang 311522,China) |
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| Abstract: | Objectives]This study was conducted to determine the control effects of different insecticides on the fourth(2)and fifth(3)generations of Cnaphalocrocis medinalis and the third generation of rice stem borer(Chilo suppressalis)in single cropping rice.Methods]A field experiment was conducted to control the fourth(2)and fifth(3)generations of Cnaphalocrocis medinalis and the third generation of Chilo suppressalis with four insecticides.Results]The results showed that 36%RH5849+indoxacarb SC 70 mL/667 m2,6%acitretin+chlorobenzoyl SC 40 mL/667 m2 and 5%emamectin benzoate WG 10 g/667 m2 were the best treatments for the control of Cnaphalocrocis medinalis.The corrected control effect of 36%RH5849+indoxacarb SC 70 mL/667 m2 was 80.0%,followed by 6%acitretin+chlorobenzoyl SC 40 mL/667 m2 and 5%emamectin benzoate WG 10 g/667 m2,with effects of 66.7%and 64.7%,respectively.6%avermectin+chlorobenzoyl SC was the best for the fifth(third)generation of Cnaphalocrocis medinalis.The results showed that 36%inshizide+indoxacarb SC 70 mL/667 m2,6%acitretin+chlorobenzoyl SC 40 mL/667 m2 and 12%methotrexate+flutamide ME 20 mL/667 m2 had better control effects on the fifth(third)generation of Cnaphalocrocis medinalis,and the corrected control effects on larva were 76.9%,51.1%and 60.0%,respectively,on the 7th day after application,and the leaf protection effects were 49.3%,38.9%and 59.8%,respectively,on the 17th day after application.The control effects on the three generations of stem borer were 78.9%,100%and 78.9%,respectively,but 6%avermectin+chlorobenzoyl SC was the best.Conclusion]The research provided scientific basis for the scientific and effective control of the fourth(2)and fifth(3)generations of Cnaphalocrocis medinalis and the third generation of Chilo suppressalis in single cropping rice areas in Northwest Zhejiang Province. |
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| Keywords: | single cropping rice Cnaphalocrocis medinalis Chilo suppressalis insecticide |
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