不同药剂处理防治马铃薯晚疫病的效果

Control Effect of Different Drugs on Potato Late Blight

为筛选出防治马铃薯晚疫病的理想药剂,采用72%霜荣、70%代森锰锌、72%霜霉疫净和72%农用链霉素单用或混用对马铃薯晚疫病的防治效果进行了试验。结果表明,7个用药处理的防效均显著优于清水(CK);防效最好的是150mg/kg 72%农用链霉素+70%代森锰锌800倍液+72%霜霉疫净800倍液;7个用药处理对马铃薯晚疫病的田间防治均有明显效果,为避免晚疫病病菌产生抗药性,生产中7种用药处理可交替使用。

The single and combination application of 72% Shuangrong,70% Mancozeb,72% Efosit-A and 72% Streptomycin were tested to study the control effect on potato late blight for screening optimum drugs against potato late blight.The results showed that the control effect of 7 tested drug treatments was significantly higher than CK,the combination application of 150mg/L 72% Streptomycin ＋70% Mancozeb 800 ＋ 72% Efosit-A 800 had the best control effect against potato late blight.7 tested drug treatments with the obvious control effect against potato late blight in potato fields can be alternately used in potato production.