黄瓜霜霉病是设施黄瓜重要的病害之一,且易产生抗药性,常造成减产20%~50%,有时甚至绝收,严重制约黄瓜产业的发展。为此,我们开展了70%三乙膦酸铝·代森锰锌WP混剂防治黄瓜霜霉病田间药效试验,试验结果表明,低、中、高剂量的70%三乙膦酸铝·代森锰锌可湿性粉剂(1400g/hm2、2100g/hm2和4200g/hm2)第2次用药后10d,黄瓜霜霉病防效分别为92.10%、91.56%和94.10%,效果较好。 Cucumber downy mildew cucumber plant cucumber is one of the important diseases, and easy to produce resistance, often resulting in 20% to 50% reduction, and sometimes even the total income, seriously restricting the development of cucumber industry. To this end, we conducted a field efficacy trial of 70% aluminum triethylphosphonate-mancozeb WP against cucumber downy mildew. The results showed that low, medium and high doses of 70% aluminum triethylphosphonate · The control efficacy of mancozeb WP was 92.10%, 91.56% and 94.10% respectively after 10 days of the second treatment with 1400g / hm2, 2100g / hm2 and 4200g / hm2.