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霜霉病是温室黄瓜生产中最严重的病害之一,发生流行快,产量损失严重。由于该病对推广应用多年的农药已产生抗性,防效降低,1999年5月我们在安宁渠温室黄瓜上进行了不同药剂的防效试验,选出防效高的农药进行大面积推广,取得了良好的防治效果。一、材料与方法1、供试药...
Downy mildew is one of the most serious diseases in the cucumber production in the greenhouse, with rapid epidemics and serious loss of yield. As the disease on the promotion of the application of pesticides have been produced for many years, anti-efficacy decreased, we in May 1999 greenhouse cucumber on the anti-efficacy tests carried out on different drugs to elect high efficiency pesticides for large-scale promotion, Has made a good control effect. First, materials and methods 1, for the test drug ...