于居龙, 张国, 缪康, 赵来成, 杨红福, 方继朝, 郭慧芳, 庄义庆, 姚克兵, 束兆林. 氯虫苯甲酰胺拌种对稻纵卷叶螟的防治效果及安全性评价[J]. 农药学学报, 2019, 21(3): 300-308. DOI: 10.16801/j.issn.1008-7303.2019.0055
    引用本文: 于居龙, 张国, 缪康, 赵来成, 杨红福, 方继朝, 郭慧芳, 庄义庆, 姚克兵, 束兆林. 氯虫苯甲酰胺拌种对稻纵卷叶螟的防治效果及安全性评价[J]. 农药学学报, 2019, 21(3): 300-308. DOI: 10.16801/j.issn.1008-7303.2019.0055
    YU Julong, ZHANG Guo, MIAO Kang, ZHAO Laicheng, YANG Hongfu, FANG Jichao, GUO Huifang, ZHUANG Yiqing, YAO Kebing, SHU Zhaolin. Control efficiency of Cnaphalocrocis medinalis by rice seed treatment with chlorantraniliprole and its safety evaluation[J]. Chinese Journal of Pesticide Science, 2019, 21(3): 300-308. DOI: 10.16801/j.issn.1008-7303.2019.0055
    Citation: YU Julong, ZHANG Guo, MIAO Kang, ZHAO Laicheng, YANG Hongfu, FANG Jichao, GUO Huifang, ZHUANG Yiqing, YAO Kebing, SHU Zhaolin. Control efficiency of Cnaphalocrocis medinalis by rice seed treatment with chlorantraniliprole and its safety evaluation[J]. Chinese Journal of Pesticide Science, 2019, 21(3): 300-308. DOI: 10.16801/j.issn.1008-7303.2019.0055

    氯虫苯甲酰胺拌种对稻纵卷叶螟的防治效果及安全性评价

    Control efficiency of Cnaphalocrocis medinalis by rice seed treatment with chlorantraniliprole and its safety evaluation

    • 摘要: 为减少水稻抽穗前田间稻纵卷叶螟的化学防治次数及用药量,降低对天敌的伤害及农药残留,最终实现稻纵卷叶螟的简约化防控,采用氯虫苯甲酰胺对水稻种子进行拌种处理,室内测定了药剂拌种对种子发芽的安全性,并结合不同栽培模式下的田间试验,评价了不同用量下氯虫苯甲酰胺拌种对稻纵卷叶螟的控制时长及保叶效果,明确了药剂拌种对天敌蜘蛛的影响及最终残留情况。结果表明:当氯虫苯甲酰胺按有效成分用量30~120 g/hm2拌种时,对种子的发芽率及出苗均无影响。直播稻模式下,氯虫苯甲酰胺按有效成分60 g/hm2拌种,播种后110 d,其保叶效果仍高达97.13%;旱育手栽秧模式下,氯虫苯甲酰胺按有效成分90 g/hm2拌种,播种后108 d保叶效果为82%以上,旱育机插秧模式下按有效成分90~120 g/hm2拌种,播种后90 d保叶效果仍在95%以上;3种模式下拌种处理的保叶效果及持效期均远优于常规喷雾防治。研究表明,利用氯虫苯甲酰胺对水稻种子进行拌种处理,可有效控制水稻前期及中期稻纵卷叶螟的为害,降低后期田间虫口基数,并且对田间天敌蜘蛛安全性高,同时在收获的稻谷中未检出氯虫苯甲酰胺残留(残留量低于定量限0.000 8 mg/kg)。在江苏省丘陵地区粳稻区应用氯虫苯甲酰胺拌种处理,可确保水稻直至抽穗初期无需再进行稻纵卷叶螟的防治,并可显著减少后期稻纵卷叶螟虫源基数,实现稻纵卷叶螟的简约化防治。

       

      Abstract: In order to reduce the operation times of pesticide, avoid damage to natural enemies and release human labor, a series of seed treatment methods was conducted. Safety for germination and emergence were determined in lab with rice seeds dressed with chlorantraniliprole. According to field experiments in different cultivation model, the effective period and leaf protection effect were confirmed. The safety on natural enemies and the final residue of seed dressing were determined. The results showed that germination and seedling rate were not influenced when the rice seeds were dressed with 30-120 g(a.i.)/hm2 chlorantraniliprole. When the dressed seeds were used directly in seeding rice filed with the effective concentration 60 g(a.i.)/hm2, the leaf keeping rate was 97.13% in the 110th day. When drily raised rice seedling techniques were used with the concentration of 90 g(a.i.)/hm2, the leaf keeping rate were over 82%. In mechanical transplanting rice seedling model with concentration 90-120 g/hm2, the leaf keeping rate was over 95%. The control efficiency and effective period of chlorantraniliprole seed treatment were better than that of the leaf spray treatment in three different cultivation modes. It can control the rice leaf roller in the middle and early stages of rice development and reduce the number of pests in the late rice growth. The killing of natural enemies risk in the field were not observed when rice seed was dressed with chlorantraniliprole, and chlorantraniliprole residues in harvested rice was lower than limit of quantity (0.000 8 mg/kg). By using the seed treatment, it was not necessary to prevent and control the rice leaf roller until the heading stage in japonica rice in the hilly area of Jiangsu, and the number of the rice leaf roller in late rice growth was reduced, which make it a simple prevention and control method of the rice leaf roller.

       

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