不同杀菌剂对芒果白粉病的防治效果

The Efficacy of Different Fungicides on the Prevention and Control of Mango Powdery Mildew

为探寻田阳区芒果白粉病适宜的防治药剂,以‘台农芒果’为试验材料,设置了7个不同杀菌剂处理,比较了不同处理对芒果白粉病防治效果及产量的影响。结果表明,100亿CFU/g枯草芽孢杆菌可湿性粉剂(锐真)、0.5%大黄素甲醚水剂2个处理的防治效果更佳,在第三次用药后14 d,防治效果均超过了70%;100亿CFU/g枯草芽孢杆菌可湿性粉剂(锐真)、0.5%大黄素甲醚水剂2个处理的芒果产量最高,分别较CK0高出了31.05%、22.50%。可见,100亿CFU/g枯草芽孢杆菌可湿性粉剂(锐真)、0.5%大黄素甲醚水剂是防治芒果白粉病的理想药剂,建议在田阳区芒果生产中推广使用。

In order to explore suitable fungicides for the prevention and control of mango powdery mildew in Tianyang District,the author used"Tainong Mango"as the experimental material and set up 7 different fungicide treatments to compare the effects of different treatments on the prevention and control of mango powdery mildew and the yield.The results showed that the control effect was better with two fungicides,10 billion CFU/g Bacillus subtilis wettable powder(Ruizhen)and 0.5%emodin methyl ether water.After 14 days of the third application,the control effect exceeded 70%;Mango production was highest with 10 billion CFU/g Bacillus subtilis wettable powder(Ruizhen)and 0.5% emodin methyl ether water,which were 31.05% and 22.50% higher than the blank control,respectively.Conclusion:10 billion CFU/g Bacillus subtilis wettable powder(Ruizhen)and 0.5% emodin methyl ether aqueous solution are ideal drugs for preventing and treating mango powdery mildew.It is recommended to promote their use in mango production in Tianyang District.