69%锰锌·烯酰可湿性粉剂防治黄瓜霜霉病药效试验

Efficacy Test of 69%Mangano-Zinc·Enyl Wettable Powder to Control Downy Mildew of Cucumber

探讨69%锰锌·烯酰可湿性粉剂不同施用量对黄瓜霜霉病的药效,并与代森锰锌、安克、灭克进行对比分析。结果表明:69%锰锌·烯酰可湿性粉剂的黄瓜霜霉病防效较好,用药量合理情况下对黄瓜安全未见药害且对增产有积极作用。推荐其使用量为120~140 g/667 m^(2),首次用药应在发病前或发病初期,间隔期1周,共施药3次,施药次数和间隔期应视发病情况灵活掌握。50%安克可湿性粉剂和60%灭克可湿性粉剂防效较高,增产效果明显,与69%锰锌·烯酰可湿性粉剂(120,140 g/667 m^(2))无明显差异,均显著优于其他处理。可考虑三者交替使用,以减少抗性产生。

The effect of 69%manganzinc-enoyl wettable powder on cucumber downy mildew was investigated,and was compared with mangan-zinc,Anke and Mocap.The results showed that:69%manganzinc-enoyl wettable powder had better control effect on cucumber downy mildew.Under reasonable dosage,there was no harm to cucumber safety and it had positive effect on increasing production.The recommended dosage is 120~140 g/667 m^(2),the first drug should be used before or at the beginning of the disease,the interval is one week,a total of 3 times,and the frequency of application and the interval should be flexible according to the disease situation.50%Anke wettable powder and 60%Mocap wettable powder had higher control effect and obvious yield increase effect,which had no significant difference from 69%Manganozinc-oleyl wettable powder(120,140 g/667 m^(2)),and were significantly better than other treatments.The alternating use of the three can be considered to reduce resistance generation.