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过去防治黄瓜白粉病多靠喷洒多菌灵、托布津之类杀菌剂，由于连年使用，病害会产生抗药性。为此，特介绍几种防治新法．一、生物农药防治。即选用农抗120防治。使用浓度为100ppm－209ppm，发病初期使用，隔7－9天后再喷一次，连喷3－4次即可控制白粉病。叶子正反面以及茎上、叶
In the past, the prevention and control of cucumber powdery mildew depends on the spray carbendazim, Topaz and other fungicides, as years of use, the disease will produce resistance. To this end, special introduction of several new law. First, biological pesticide control. That is, use of agricultural anti-120 control. The use of the concentration of 100ppm-209ppm, the incidence of early use, spray again after 7-9 days, and even spray 3-4 times to control powdery mildew. Positive and negative leaves and stems, leaves