代森锰锌和烯酰吗啉混配防治黄瓜霜霉病的药效研究
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S436.421.1+1

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河南省科技攻关项目(122102110114)


Studies on Effect of Mixture of Mancozeb and Dimethomorph on Controlling of Cucumber Downy Mildew
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    摘要:

    本文测定了代森锰锌、烯酰吗啉及其不同配方对黄瓜霜霉病菌的敏感性,并对最优配方进行了田间药效试验。结果表明:各药剂处理对孢子囊萌发均有一定的抑制作用,且随浓度升高抑制效果愈加显著。各配方组合的共毒系数均大于100,两者组合具有增效作用,其中以60%代森锰锌和9%烯酰吗啉组合效果最佳,增效作用明显,EC50达到42.57μg/mL。田间药效试验以69%代森锰锌·烯酰吗啉WP133g/667m2的处理对黄瓜霜霉病防效最好,推荐的有效用量为有效成分100~133g/667 m2

    Abstract:

    The sensitivity of Mancozeb, Dimethomorph and their different formulations to Pseudoperonospora cubensis was determined and effect of the optimal formulation tested in this study. The results showed that each of the various chemical treatments has a certain inhibition to germination of sporangia, and the inhibiting effect enhanced as the concentration increases. The co-toxicity coefficients of each formulation were all above 100, and the formulations of these two drugs had synergistic effect. The best formulation among them was the mixture of 60% Mancozeb with 9% Dimethomorph, which EC50 reached 42.57 ug/ml. Moreover, the best control effect to Cucumber Downy Mildew was 69% Mancozeb·Dimethomorph WP 133g/667m2, and the effective dosage that we recommend is 100~133g/667m2.

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刘鸣滔,王笑田.代森锰锌和烯酰吗啉混配防治黄瓜霜霉病的药效研究[J].东北农业科学,2014,39(2):51-53,60.

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  • 收稿日期:2013-08-12
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  • 在线发布日期: 2024-12-06
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