Application method and matters needing attention of aerosol in greenhouse

For greenhouse growers, it is no stranger to greenhouse aerosol. In winter and spring, many farmers use it to control diseases and insect pests. It is not only time-saving and labor-saving, but also an efficient and environmentally friendly method. The most important thing is that it is not affected by climate and can be used on rainy days. So how to use the aerosol? What should I pay attention to? Come and have a look with the editor.

1. Effect of aerosol

Aerosol is a fumigant, and its principle is to spread smoke to plants or worms through combustion. generally, aerosols are mainly divided into insecticides and fungicides, and each aerosol will control different diseases according to different active ingredients. And because of the variety of aerosol, aerosol can only be used to control downy mildew, blight, gray mildew, blight, anthrax and so on, while insecticidal is mainly aimed at aphids and whitefly.

2. Usage

Aerosol is best used in the evening, because the ground temperature in the evening is lower than the air temperature, if used at this time, it will form a relatively stable layer of smoke cloud in the shed, the effect is more obvious. Once found that the harm of diseases and insect pests, must be timely use of medicine, and aerosol is a protective fungicide or insecticide, can not be absorbed by plants. Therefore, it is necessary to use drugs at the initial stage of the disease in order to control the harm of diseases and insect pests, and the dosage should also be paid attention to, generally 300-400 grams per mu. The time of smoking should also be paid attention to, which can be controlled within 4-5 hours, and the maximum should not exceed 10 hours. In addition, we should also pay attention to some characteristic periods of crops, such as cucumbers and watermelons used at seedling stage, which may cause drug damage.

3. Points for attention

There are many kinds of aerosol in greenhouse, which should be selected according to the characteristics of greenhouse. Tablets are suitable for narrow and long leek shed with more cloth spots. Powders and granules are suitable for tomato, cucumber and other vegetable greenhouse and fruit greenhouse with wide greenhouse. In addition, you can not blindly apply the same, to use a variety of agents alternately, to avoid drug resistance, storage should also be placed in a dry place. When in use, the greenhouse should be closed, the greenhouse film can not have damaged holes, and there are loopholes to be repaired in time. It should also be noted that aerosol can only be used in greenhouses, middle greenhouses and greenhouses, not directly in small arched sheds, so as to avoid drug damage caused by excessive concentration.

The above is the greenhouse aerosol use methods and points for attention, hope to help you, want to know more related knowledge, please pay attention to us.