杜邦阿砣拌种对花生病害的防治效果

Control Effect of 22.5% Picoxystrobin SC against Peanut Diseases

[目的]明确杜邦阿砣拌种对花生病害的防治效果,探讨其防治效果较佳的用法和用量。[方法]以特色花生"泰花4号"为试验材料,通过小区试验研究杜邦阿砣拌种对花生根腐病、茎腐病和中期白绢病的防治效果。[结果]使用杜邦阿砣450 ml/hm2+600 g/L吡虫啉悬浮种衣剂450 ml/hm2,对水4 500 ml/hm2,拌种仁195 kg/hm2,对花生苗期根腐病、茎腐病的防治效果较好;各处理对白绢病的控制效果均较差,但随着杜邦阿砣用量的增加,病株数和病株率有降低趋势。[结论]试验结果为杜邦阿砣的推广应用提供了理论依据。

[Objective] Control effect of 22.5% Picoxystrobin SC against peanut diseases was understood to find out the optimal application and dose.[Method] Peanut‘Taihua 4’was taken as tested material,and control effects of 22.5% Picoxystrobin SC against peanut root rot,stalk rot and southern blight were studied through plot experiment.[Result] After seed kernel was dressed with 22.5% Picoxystrobin SC 450 ml/hm2 and 600 g/L Imidacloprid flowable concentrate for seed coating 450 ml/hm2 according to 195 kg/hm2 of seed kernel dressing and4 500 ml/hm2 of the diluted time,good control effects against peanut root rot and stalk rot were received.All treatments had bad control effects on southern blight,but the rate of disease plants decreased with the increase of 22.5% Picoxystrobin SC concentration.[Conclusion]The results provide theoretical basis for popularization and application of 22.5% Picoxystrobin SC.