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Greenhouse vegetable pest control method
Due to the special ecological environment of greenhouse vegetables, the types of diseases and insect pests are numerous, rapid expansion and heavy damage, which are the most outstanding problems in current production. Its prevention methods are as follows. High temperature stuffy shed method First, before the seedling stuffy. After the shed is completed, choose to cover the greenhouse with sunny days and seal the shed for 7-10 days so that the temperature inside the shed can reach 60 degrees Celsius. This will kill pathogenic spores and eggs on the soil surface and walls, and reduce the incidence of disease during the vegetable production period. probability. The second is with Miao bored shed. After a few days with Miaobo, we should pour one pervious water, carry out a field cleaning, remove the diseased leaves and old leaves, and take them out of the shed; spray a protective agent to assist the boring shed; and select the sunny noon to seal the shed. The temperature in the shed has risen to 42-45 degrees Celsius and 2 hours. After the treatment is completed, the vents shall not be magnified suddenly, the temperature shall be gradually reduced, and the management shall be strengthened. Each treatment shall be separated by at least 7-10 days. To strictly control the temperature, if the greenhouse temperature is lower than 42 degrees Celsius, the effect of inhibiting the bacteria is not good; above 45 degrees Celsius, the plants are easily injured. When chemical control of spray control methods is used, scientific and rational use of drugs should be used. First, according to the types of diseases and insect pests, appropriate pesticides should be selected for prevention and control; secondly, according to the law of occurrence of pests and diseases, the best control period and the best dosage should be strictly controlled. Timely and appropriate use of medicines; Thirdly, when a variety of diseases and insect pests occur at the same time when mixing drugs, making a single drug can prevent and control a variety of pests and diseases; Fourth, according to weather changes, flexible selection of pesticide formulations and application methods; to strictly implement the pesticide operation and use procedures to avoid Caused an accident.