葡萄霜霉病(Plasmopara viticola)历来为害严重,特别是优质品种玫瑰香,极易感病,导致早期落叶,造成当年失收,翌年减产。幼苗感病后,影响生长,枝条不能成熟,无法过冬。目前国内对霜霉病尚无特效药剂防治。为此,我所进行防治葡萄霜霉病新药剂的筛选,从中选出内吸杀菌剂“乙磷铝”,该药不仅具有预防和治疗效果,还具内吸、双向传导性能。几年来所作一系列试验表明,乙磷铝确是防治葡萄霜霉病的特效药剂。结果总结如下: (一)室内离体菌的测定 1.对葡萄霜霉菌孢子囊释放的抑制作用 Grape downy mildew (Plasmopara viticola) has always been serious damage, especially high-quality varieties of rose incense, highly susceptible to disease, leading to early deciduous, resulting in loss of the year, the next year cut. Sick seedlings affect the growth, the branches can not mature, can not wintering. At present, there is no effective anti-downy mildew prevention and treatment. To this end, I carried out prevention and treatment of grape downy mildew screening of new agents, from which to choose internal absorption fungicide “phosphorus aluminum”, the drug not only has the effect of prevention and treatment, but also with internal absorption, two-way conductivity. A series of experiments conducted over the past few years showed that p-APA is indeed an effective agent for controlling grape downy mildew. The results are summarized as follows: (a) determination of indoor bacteria 1. Grape Militaris spores release inhibition