不同农药对柑桔棒孢霉褐斑病的防效试验

Control Effect of Different Pesticides on Corynespora Leaf Spot of Citrus

近年来柑桔棒孢霉褐斑病在梅列区柑桔产区发生危害,造成柑桔树大量落叶,树势衰弱,进而减产减收。为了寻找有效的防治药剂,试验开展了不同农药对柑桔棒孢霉褐斑病的防效试验,田间试验结果表明,在柑桔棒孢霉褐斑病发病初期,根外喷施42%稳保悬浮剂2500倍液或42.4%健达悬浮剂2500倍液或32.5%阿米妙收悬浮剂1500倍液或35%露娜润悬浮剂2000倍液或60%悬克水分散粒剂1500倍液或50%多菌灵600倍+80%大生600倍混合液,7~10 d再重复一次,具有较好的防治效果,可以在生产上推广应用;不同药剂可轮换使用,以减少植物的抗药性。

In recent years,corynespora citri brown spot has been harmed in the citrus production areas of Meilie district,resulting in a large number of fallen leaves and weak tree vigor.In order to scientifically find effective control agents,the control effect of different pesticides on corynespora citri brown spot was carried out.The field test results showed that the 42%"Wenbao"suspension concentrate 2500 times solution or 42.4%"Jianda"SC 2500 times liquid,32.5%"Amimizol"SC 1500 times liquid,35%"Lunarun"SC 2000 times liquid,60%"Xuanke"water dispersible granule 1500 times liquid or 50%carbendazim 600 times+80%"Dasheng"600 times mixture,repeated once in 7-10 days,has good control effect,and can be widely used in production.Different pesticides can be used in rotation to reduce the resistance of plants.