家保福防治甘蔗虫害试验初报

Control Sugarcane Pests with Bifenthrin-Clothianidin

测试了几种农药在新植、宿根甘蔗生产上对枯心苗、螟害节的防治效果以及对甘蔗产量的影响。结果表明：与对照（不施药）相比较，测试的3种农药对枯心苗的防治效果都很好，其中1%家保福（用量45 kg/hm2）对枯心苗的防治效果最好，防治效果明显增强；1%家保福（用量60 kg/hm2）与大田目前推广的40%福戈、20%毒死蜱2种农药比较，防治效果差距不大。中后期对螟虫节的防治效果与对照比较，测试的3种农药的防效较明显，螟害节率平均比对照降低20.5%～23.0%，其中1%家保福（用量60 kg/hm2）的防治效果最好。使用该3种农药的甘蔗平均单产均超过对照（不施药）。建议在今后甘蔗大田生产应用中，这3种农药可相互替换使用，但首选药是1%家保福，其施用方法是初次与底肥用药时用量为45 kg/hm2，第2次与中期追肥施用时用量为60 kg/hm2。

Some pesticides were tested on both plant cane and ratoon about their effects to control dead heart and bored stalk and the effect to cane yield. The result showed that, compared with the check treatment （using no pesticide）, the effects of 3 tested pesticides to control dead heart were good, and the best one is 1%Bifenthrin-Clothianidin granule with application rate of 45 kg/hm2. There were no significant difference among 1%Bifenthrin-Clothianidin granule with application rate of 60 kg/hm2, 40% Virtako and 20% Chlorpyrifos. The effects of the 3 tested pesticides were also good to control bored stalks which were decreased by 20.5%~23.0%compared with that of the check, and the best one is 1%Bifenthrin-Clothianidin granule with application rate of 60 kg/hm2. The cane yields applied the 3 pesticides were all greater than that of the check. It is thus suggested that the 3 pesticides can be applied interchangeably. The best option is 1%Bifenthrin-Clothianidin granule, with application rate of 45 kg/hm2 when applied along with base fertilization, and 60 kg/hm2 when applied along with top-dressing fertilization.