| 黄凯1, 缪勇1*, 高希武2, 胡本进3, 徐丽娜3, 李辉1, 李宾宾1.3种杀虫剂对中稻田白背飞虱及捕食性天敌群落的影响[J].植物保护,2016,42(3):184-189. |
| 3种杀虫剂对中稻田白背飞虱及捕食性天敌群落的影响 |
| Effects of three insecticides on Sogatella furcifera and predatory natural enemy community in mid-season rice fields |
| 投稿时间：2015-05-11 修订日期：2015-06-17 |
| DOI： |
| 中文关键词: 中稻 白背飞虱 捕食性天敌 杀虫剂 |
| 英文关键词:mid-season rice Sogatella furcifera predatory natural enemy insecticide |
| 基金项目:公益性行业(农业)科研专项(201203038) |
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| 中文摘要: |
| 采用室内毒力测定、田间试验和系统调查方法研究了3种杀虫剂对中稻田白背飞虱及捕食性天敌群落的影响, 旨在提高水稻白背飞虱的化学防治效率, 减少农药对环境的污染, 保护天敌对害虫的自然控制作用, 为水稻白背飞虱的综合治理提供依据。研究结果表明, 阿维菌素、吡蚜酮和毒死蜱3种杀虫剂对白背飞虱3龄若虫均有较高的室内毒力, LC50分别为0.339 1、0.896 0和4.714 7 mg/L, 说明安徽省桐城市白背飞虱种群对这3种药剂尚未产生较高的抗药性。阿维菌素对白背飞虱的田间防治效果较差, 毒死蜱药后3 d即达到较好的防治效果，但持效期较短。吡蚜酮对白背飞虱有很好的防治效果, 药后7 d和14 d的防效分别达到90.94%和89.94%, 且对捕食性天敌群落影响较小, 有助于保护和加强天敌的自然控制作用, 是防治中稻田白背飞虱较理想的药剂。 |
| 英文摘要: |
| In order to increase the chemical control efficiency against Sogatella furcifera, reduce insecticide pollution in the environment and protect the control effects of natural enemies, so as to provide basis for IPM of S. furcifera in rice fields, the effects of three insecticides on S. furcifera and predatory natural enemy community in mid-season rice fields were investigated by toxicity test in laboratory, field experiment and systematic survey. The results showed that abamectin, pymetrozine and chlorpyrifos had relatively high toxicity to 3rd instar nymph of S. furcifera in laboratory, with the LC50 value of 0.339 1 mg/L, 0.896 0 mg/L and 4.714 7 mg/L, respectively, indicating the population of S. furcifera in Tongcheng City, Anhui Province had not developed evident resistance to the three insecticides. The field control effect of abamectin on S. furcifera was not satisfied and that of chlorpyrifos was relatively high in three days. Pymetrozine had satisfactory field control effect on S. furcifera with control efficacies of 90.94% (7 days after treatment) and 89.94% (14 days after treatment), respectively. In the meantime, pymetrozine had minor negative impact on predatory natural enemy community, which was helpful to protect and increase the control effects of natural enemies. Therefore, pymetrozine is a candidate insecticide that can be recommended for S. furcifera control in mid-season rice fields. |
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