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黄瓜白粉病和番茄叶霉病是西安市温室生产中两大病害。传播蔓延极快,发病后仅十多天便迅速扩及整个温室,致叶片早期染病干枯,提前拔蔓,产量损失很大;同时它又是春季大田黄瓜、番茄严重感病的侵染来源。近几年来,我市主要以福美砷、代森铵、退菌特等农药,防治这两种病害,但由于效果较差,难于全面控制。毛主席教导我们:“一切经过试验。”今春,我们使用陕西省化工设计研究院出品的
Cucumber powdery mildew and tomato leaf mold are two major diseases in greenhouse production in Xi’an. Spread spread very fast, only 10 days after the onset of rapid expansion of the entire greenhouse, causing early leaf dry leaves, pull ahead in advance, the yield loss is large; the same time it is spring field cucumber, tomato serious infection of the source of infection. In recent years, the city mainly Fumei arsenic, ammonium detoxification, pest control special pesticides, prevention and control of these two diseases, but due to poor results, it is difficult to fully control. Chairman Mao taught us: “Everything has been tested.” This spring, we use the Shaanxi Provincial Institute of Chemical Design produced