Concealed application of pesticides, fungicides added to the seed coating agent, or processed into tablets or granules, etc. applied to the greenhouse soil, so that crops absorb the drug through the root system, and transport to all parts of the plant tissue It has good results in killing cockroaches, cockroaches, cockroaches, cockroaches, and underground pests.
The aerosol application method uses an aerosol agent made of a preventive pesticide as a main component. After being ignited, the pesticide can be evenly released in the form of smoke, and plays a bactericidal and disease-proof role in a confined space of a greenhouse. At present, the pesticides that can be used for greenhouse aerosols are increasing year by year. Dichlorvos and chlorothalonil are common and can be used to control cucumber downy mildew, epidemic diseases, tomato early blight, late blight and gray mold, and gray mold of leek. Locusts, as well as insect pests such as locusts of various vegetables. The time for using aerosols is appropriate to ignite in grass in the evening and it is best to ignite the aerosols in cloudy or snowy evenings to prevent disease and disinfestation. Generally, it is applied once every 7 to 10 days, and 2 to 3 times in succession can produce good results.
Dust application method dust agent is a new type of pesticide, which is produced through special processing of pesticides into solid fine particles. The dust agent has a unique flying effect, so that the pesticide dust particles can freely and evenly fall on the stems and leaves of the vegetables in the greenhouse to play a role in preventing and killing insects. The currently used dust agents are: 10% chlorothalonil compound dust agent, can control cucumber downy mildew, cucumber powdery mildew, cucumber anthracnose, tomato disease; extermination dust agent can control aphids, whiteflies, etc.; morpholine dust The agent controls cucumber sclerotinia disease, tomato gray mold, leeks and other vegetable molds, etc.; 5% antibacterial dust agent controls cucumber keratopathies. Dust agents are usually applied before or at the beginning of the disease. Each kilogram of sheds has a dose of 1 kilogram each and is applied once every 7 to 10 days. It is best to do it in the morning or evening before the release of air 1 hour or after the closure of air, this method plants uniform drug, less drug loss, high utilization, good control effect.
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