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Grab the critical period and use the medicine at the right time. According to the occurrence and development of pests and diseases, master the correct timing of medication. It is best to seize the medicine at the crucial moment. In general, the use of drugs in the early stages of the occurrence of pests and diseases, the most effective. Because the amount of occurrence is small at this time, it is easy to control, and at the same time, the pest is in a young stage, and the natural resistance to the medicament is poor. Calculate the amount of medication, and smoke at the right time. According to the size of the greenhouse space to determine the amount of medication, generally according to the length, width and height of the greenhouse to accurately calculate its volume, thereby deducing the amount of aerosol. Smoke time, it is best to choose in the evening or cloudy, in order to facilitate the precipitation of smoke, improve the control effect. Master the method of administration and spread evenly. Place the aerosol tablets on the bricks, or hang them on the wire in the shed, and do not place them directly on the vegetable ground. Start to spread evenly, and the distance between the tablets and the tablets should be equal. Then, the greenhouse is closed, and each tablet is ignited sequentially from the inside to the outside. Pay attention to blowing off the open flame, which is conducive to the generation of thick smoke, fumigation, continuous fumigation for 5 to 6 hours, that is, open the shed ventilation, smoked smoke every 7 to 10 days, and continuously smoked 2 to 3 times.
How to use aerosols in vegetable greenhouses
The rapid development of vegetable greenhouses, the use of aerosols is more common, the use of aerosols to prevent diseases and diseases, fast and simple, can be warmed and dehumidified, but must be scientific and reasonable when used, in order to achieve good results. Find out the target of prevention and treatment, and prescribe the right medicine. The performance of various aerosols is different, and its control objects are also different. According to the type and degree of occurrence of pests and diseases, the varieties of aerosols are correctly selected, the right medicines are prescribed, the medicines are used, the control effect is high, the money is saved, and the labor is saved.
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