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随着生物农药在农业生产应用上的发展,生物农药的防治效果受到越来越广泛的重视,混配应用逐渐成为一种趋势。本研究选用有代表性的2个香稻品种‘培杂软香’(杂交稻)和‘桂香占’(常规稻),通过田间试验,研究了6个不同的生物农药和化学农药的混配组合对香稻稻纵卷叶螟、三化螟、二化螟和纹枯病的防治效果。结果表明:印楝素乳油+苏云金杆菌(Bt)+井冈霉素+杀虫双混配组合对2个香稻的病虫害防治效果较佳,对4种病虫害的的防治率都在94%以上,且香稻产量较高。印楝素乳油+苏云金杆菌(Bt)+鱼藤酮乳油+井冈霉素混配组合对‘培杂软香’病虫害的防治效果显著,对四种病虫害的防治率高达94%;印楝素乳油+苏云金杆菌(Bt)+井冈霉素混配组合对桂香占病虫害的防治和增产效果明显,对卷叶螟的防治率为93%～96%,对其他3种病虫害的防治率高达98%。因此,在适当比例情况下,生物农药和化学农药配施防治香稻病虫害效果较好,且具有一定的保产效果。
With the development of biopesticide in the application of agricultural production, the control effect of biopesticide has drawn more and more attention. The application of compound pesticide has gradually become a trend. In this study, two representative aroma rice varieties, “Pei-ling” (hybrid rice) and “Gui-xianzhan” (conventional rice) were selected. Field trials were conducted to study the mixture of 6 different biopesticides and chemical pesticides Combining control effects on fragrant rice leaf roller, Borer, Chilo suppressalis and sheath blight. The results showed that the combination of azadirachtin EC + Bt + Jinggangmycin + insecticide and double insecticide had a better control effect on the pests and diseases of the two fragrant rice, the control rates of the four pests were above 94% And higher yields of aromatic rice. The combination of azadirachtin EC + Bt + rotenone EC + Jinggangmycin had a significant control effect on the pest and disease control of pearl, and the control rate of pest and disease was as high as 94%. Azadirachtin + Suyun gold The combination of Bt + Jinggangmycin significantly inhibited the cinnamon and increased the yield of cinnamon, the control rate was 93% -96% for the leafroller and 98% for the other three pests. Therefore, in the appropriate proportion of cases, the combination of biological pesticides and chemical pesticides to prevent and cure fragrant rice pests and diseases better, and has a certain yield effect.