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近几年来,小麦白粉病在我国各产麦区频繁发生,为害日趋严重,已成为小麦生产的重要病害,严重地威胁着小麦生产。目前防治白粉病主要是应用抗病品种和化学药剂防治。由于抗白粉病品种很少,完全依靠应用抗病品种来控制白粉病的危害尚不可能;而化学药剂防治效果较好的只有粉锈宁一种。近年在欧洲一些国家,白粉病对粉锈宁已经产生抗性,抗药水平达20—50倍,防治效果和保产效果大幅度下降,已到了不能继续使用的地步。在我
In recent years, wheat powdery mildew occurs frequently in various wheat growing areas in our country. The damage is becoming more and more serious. It has become an important disease of wheat production and threatens wheat production seriously. At present, the main prevention and control of powdery mildew is the application of disease-resistant varieties and chemical control. Due to the small number of powdery mildew resistant, it is impossible to completely control the powdery mildew by applying the resistant varieties. However, the only effective agent for preventing and controlling chemical agents is the triadimefon. In some countries in Europe in recent years, powdery mildew has already produced the resistance to triadimenon, the level of resistance is 20-50 times, and the prevention and control effect and the yield-reducing effect have dropped drastically, reaching the point that can not be used continuously. at me