Application method of medicine for treating melon leaf downy mildew

Abstract

The invention discloses an application method of a medicine for treating melon leaf downy mildew, comprising the following steps: A, a stock solution is prepared: components of the stock solution comprise 64% oxadixyl wettable powder, gemina spr, Dictamnus dasycarpus Turcz, ShuangBeiEr, garlic extract and Trichoderma spp. wettable powder; B, water is added into the stock solution to preparea diluent which accounts for 400-500 times the mass of the stock solution; C, use dosage per mu is 3-3.75kg; the medicine is sprayed uniformly; front and back sides of a leaf are sprayed uniformly; the key point is to spray the mildew layer on the back side of a sick leaf; and the upper healthy leaves are sprayed for protection; and D, the temperature in the greenhouse is maintained at 33-34 DEG C after spraying; after three days, the room temperature at night is controlled at or above 16 DEG C, and the room temperature in the morning is controlled at or above 10 DEG C; and moist is removed through ventilation, and air humidity of the room is reduced so as to make the environment not beneficial to formation, germination and invasion of cucumber downy mildew sporangium. The application method provided by the invention is simple. The applied product requires a simple composition ratio, is convenient to use and has a good effect of treating cucumber downy mildew.