How to control Botrytis cinerea of zucchini

In recent years, the area of zucchini cultivated in solar greenhouse is larger, and the occurrence of zucchini gray mold often causes tender melon rot, which affects the yield and benefit. Therefore, measures should be taken to carry out comprehensive prevention and control. Grafting to prevent disease. Grafting with Yunnan black seed pumpkin as rootstock and zucchini as scion can increase the resistance of zucchini to Botrytis cinerea. Hanging vine cultivation. When the zucchini grows to eight leaves, hang the vine, connect a wire above each row of plants in the north-south direction, according to the position of each zucchini, tie a nylon rope perpendicular to the root of the zucchini, and then tie the end of the rope to the root of the zucchini so that the rope and the stem are intertwined with each other. The potion kills the flower. After zucchini blossoms, 0.1% trimethoprim is added to 2Jing 4D every morning to effectively control Botrytis cinerea of zucchini. Chemical control. It can be sprayed with 1500-2000 times of 50% Sukeling wettable powder, 1000-1500 times of 50% propofoin wettable powder, 1000 times of 70% Dysen zinc wettable powder or 50% carbendazim wettable powder, once every 6-7 days, 2-3 times in a row, 45-60 kg per mu. Strengthen field management. Clean up the sick and disabled bodies, keep the field hygienic, prevent the spread of germs and control the temperature. Subsurface irrigation or drip irrigation is used for watering, and the humidity at night should be less than 80%. When the humidity is high, measures should be taken to reduce the humidity. In the later stage of production, it is necessary to clean up the old leaves in time, increase ventilation and light transmission, make the plant grow healthily and increase the ability of disease resistance.