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试验采用不同杀菌剂、组合及不同喷施间隔天数对3个马铃薯品种的晚疫病防控效果进行试验研究。结果表明,大生(代森锰锌)、瑞凡(嘧菌环胺)及组合(山德生+金雷+达科宁+富帅得)对晚疫病防控效果较好,和对照相比达显著水平(P<0.05),但它们之间差异不显著;施用瑞凡杀菌剂的单产均值达到33 766.5 kg/hm2,其次是银法利(氟吡菌胺+霜霉威盐酸盐),Agrifos600(亚磷酸)的防控效果较差;杀菌剂组合的防治效果产量达到30 177 kg/hm2,增产8%~41%;杀菌剂组合间隔14 d喷药的防控效果优于间隔7 d喷药。从参试的品种防治效果看,在云南省大春季节的种植时,合作88采用瑞凡进行防治效果较好,陇薯6号采用银法利进行晚疫病防治效果较好,而费乌瑞它较感晚疫病,各种药剂的防控效果均不理想。
The experiment used different fungicides, combinations and different spraying interval days to test the control effect of late blight on three potato varieties. The results showed that the prevention and control of late blight were better than that of the control (Dayimansen), Ruifan (Cyprodinil) and the combination (Sanderson + Jinlei + Dakening + Fu Shuai) (P <0.05), but the difference between them was insignificant. The average yield of Ruifan fungicides reached 33 766.5 kg / hm2, followed by silverfiracid (fluopicolide + propamocarb hydrochloride) , And that of Agrifos 600 (phosphorous acid) was poor. The control effect of fungicide combination reached 30 177 kg / hm2 and the yield was increased by 8% -41%. The control effect of the fungicide combination spraying for 14 d was better than that of the interval 7 d spraying. From the control effect of varieties tested, in Yunnan Province during the spring planting season, the cooperation of Ruifan 88 is better, and Longshu 6 is better than Yinfali for controlling late blight. It is more late blight, prevention and control of various agents are not ideal.