Technical points for using aerosols to control vegetable pests in greenhouses
First, spraying time According to the characteristics of greenhouse vegetable production, it is best to spray aerosols in the evening after sunset so that it can be smoked at night, because this time is more conducive to the smoke particles sink, the control effect is more ideal . Second, the spraying method Spraying agent to take more points to deploy, cloth to be uniform, discharge time from the inside out in order to use the dark fire ignited, quickly closed the window after the smoke closed the room, the next morning to open the ventilation. Such as the prevention and treatment of diseases should be mastered in the early stages of drug use, it is best to apply once every 1 week, once every 3 to 4 times; prevention and treatment of disease should also be in the initial hair spraying, early control, from the prevention of spread. Third, the dose of choice of aerosol dosage of pesticide products have stereotyped products produced by the plant, such as 10% chlorothalonil aerosol, 10% speed Keling aerosol, 15% Ke Yan Ling smoke agent, 10% procymidone smoke agent, 22 % Dichlorvos, etc., should be used in accordance with the principle of economic efficiency, according to the choice of suitable agents and the appropriate dose. Such as the prevention and treatment of cucumber downy mildew, disease, tomato early blight, late blight, gray mold, etc., can choose 10% procymidone smoke agent, 250 to 300 grams per 667 square meters of medication, the incidence of heavy doses of appropriate medicine Increase to 400 - 500 grams, such as powdery mildew can choose 15% Ke Yan Ling smoke agent, 250 to 300 grams per 667 square meters of medication. Can also be used sulphur powder and sawdust mixed homemade, with sulfur powder 250 grams per 667 square meters, 500 grams sawn wood; Sclerotinia disease, can use 10% fast Ke Ling smoke agent, 250 per 667 square meters of medication - 300 grams ; Control of aphids, powdery mildew and other pests, can use 22% dichlorvos smoke agent, 300-400 grams per 667 square meters of medication. It can also be used to absorb the weight of self-made dichlorvos emulsifiable concentrate made from lead powder. It uses 80% of dichlorvos emulsifiable concentrate 200-400 ml per 667 square meters. Fourth, pay attention to the safety of the use of tobacco in the studio to avoid the crops and flammable materials, the smoke agent on the aisle, using bricks or stones to lift, or use the wire to the smoke agent from the ground 20 - 40 cm Height. After igniting the smoke agent, it should exit immediately and close it tightly. The next day, after the shed is ventilated, it can enter the shed to engage in farm work. Jixian County, Shanxi Province Agricultural Technology Center Chang Sheng (041500)
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