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为了阐明新一代杀虫剂氟虫腈(锐劲特)对二化螟、三化螟、稻纵卷叶螟的防治效果及应用前景,进行了水稻盆栽试验、田间防效试验,并对施用锐劲特后水稻叶绿素含量、功能叶叶面积和产量进行了测定。结果表明,锐劲特施药后13天接虫的三化螟幼虫死亡率仍高达94.44％。在田间防效试验中,每公顷施用锐劲特80％WG有效成分24g防治二化螟,防止枯心效果达97.62％,防止白穗效果达94.44％,害虫死亡率达96.15％;每公顷施用锐劲特5％SC有效成分22.5g防治晚稻三化螟,保苗效果可达95.91％,害虫死亡率达99.04％;每公顷施用锐劲特5％SC有效成分30g防治稻纵卷叶螟,保叶效果达97.88％。叶绿素含量比对照增加32.4％;每公顷施用锐劲特80％WG有效成分36g时,功能叶叶面积增加16％～27.5％,并且杂交稻博优湛19比常规稻早糯3321和早熟早籼815对锐劲特更敏感。每公顷施用锐劲特5％SC有效成分22.5～37.5g时,水稻株高增加4.0～6.1cm,每稻丛穗数增加2.6％～31.18％,结实率提高19.43％～33.97％,水稻产量增加21.58％～28.19％。
In order to elucidate the control effect and application prospect of a new generation insecticide fipronil (fipronil) against the rice stem borer, rice stem borer, rice leaf roller, rice pot experiment and field control efficacy test were carried out. The content of chlorophyll, functional leaf area and yield of Fiji special late rice were determined. The results showed that the mortality of the stem borer, larvae, borer was still up to 94.44%. In the field efficacy test, the application of fipronil 80% WG per hectare to the active ingredient 24g prevented and controlled the stem borer to 97.62%, the white spike preventing effect reached 94.44% and the pest mortality rate reached 96.15% Fiji 5% SC active ingredient 22.5g Control of late rice Borer borer, seedling effect up to 95.91%, pest mortality rate of 99.04%; per hectare application of 5% SC sharpness of the active ingredient 30g control leaf roller, Paul Leaf effect of 97.88%. Chlorophyll content increased by 32.4% compared with the control; when applying 36g of active ingredient of 80% WG per hectare, the leaf area of functional leaves increased by 16% -27.5%, and hybrid rice Boyouzhan 19 was earlier waxy 3321 and premature mature indica rice than conventional rice 815 is more sensitive to fizzy. The application of fipronil 5% SC was 22.5 ~ 37.5g per hectare, the plant height increased 4.0 ~ 6.1cm, the number of panicle per plant increased by 2.6% ~ 31.18%, the seed setting rate increased by 19.43% ~ 33.97%, and the rice yield increased 21.58% ~ 28.19%.