In recent years, many vegetable farmers have used a large amount of pesticides to control vegetable pests and diseases in order to make their vegetables robust and less sick, which not only increases production costs, but also threatens the quality and safety of vegetables. Some methods for reducing the use of pesticides in vegetables are proposed for your reference.

First, use resistant varieties

The selection of disease-resistant varieties is the basis for reducing the incidence of vegetables, but we must choose suitable for local production of high-yield, disease-resistant insects, strong resistance to high-quality varieties.

Second, strengthen the cultivation and management

1. Reasonably turn down. Such as eggplant vegetables and onions and garlic vegetables rotation, not only can significantly reduce the disease, but also have the effect of increasing production.

2. Remove diseased plant debris. The removal of diseased plant residues, diseased fruits, and weeds, centralized destruction and deep burial, and cutting off the route of transmission are a good way to prevent and control pests and diseases.

3. Reduce humidity. Because germs can multiply in high humidity conditions and endanger vegetables, so reduce the humidity in the field and reduce the incidence of diseases.

4. Reasonable fertilization. It is best to use formula fertilizer on vegetables, and mainly to increase the maturity of the organic fertilizer, with the application of phosphate fertilizer, control the amount of nitrogen fertilizer, late growth can use nitrate inhibitor dicyandiamide, prevent vegetable nitric acid Salt accumulation and pollution.

5. Use soilless cultivation. In this way, it is a good idea to artificially reduce the source of germs.

6. Set insect nets. If it is a greenhouse vegetable, install pest control nets in the vents of the greenhouse to prevent the invasion of whiteflies, roundworms and other pests, and reduce the chance of pest infestation.

Third, ecological control

1. Adopt "five changes and one increase." That is to say, "there is a drip film without drip film," and the "open space inside the shed is the full-coverage planting of the mulching film inside the shed," and the "flat rake cultivation is a high ridge cultivation," and the "clear water irrigation is an under-membrane submerged irrigation." “In the middle of the greenhouse, the air is released for the wind at the height of the sheds”; the waterproof trench on the front of the shed is added, and the water in the shelter film is drained into the underground to reduce the evaporation of water in the shed.

2. Master the "three-three-three non-irrigation three-control" irrigation technology. That is, do not pour the water on a cloudy day, do not pour in the morning and pour on the water in the afternoon. The water is poured in the dark and the water is poured; the watering is controlled during the seedling stage, and the watering is controlled in a cloudy day and the water is controlled in a low temperature.

3. Strengthen lighting and temperature management. Often wipe the shed film to maintain a good transparency of the shed film, increase light, increase the temperature, reduce the relative humidity; through measures such as thickening the wall, covering the double membrane, digging the cold ditch, etc., to effectively reduce the freezing damage and physiological diseases of vegetables.

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