1 warm soup soaking. For example, the seeds of C. cucurbitae can be soaked in warm water at 54°C for 15 minutes, removed and then soaked in clean water for 4 to 6 hours to eliminate germs. Before the seedlings are sown, the seeds are immersed in warm water of 50°C for 30 minutes, removed and soaked in cold water for 4 hours, and sown. This method can effectively control leaf mold, reduce the incidence of early blight; the seeds will be soaked in cold water for 4 hours, remove and then placed in 10% trisodium phosphate solution for another 30 minutes, can prevent tomato virus disease. 2 drug treatment. Seeds of cruciferous, Solanaceae, and Cucurbitaceae, with 75% chlorothalonil, seed dressing at a seed weight of 0.3%, can prevent early blight, downy mildew, anthracnose at seedling stage, and leaf spot disease. In addition, 100% formalin water is poured on the nursery bed 10 days before planting, and then the soil is sowed in the soil to prevent various diseases, such as blight, blight, root rot, and soft. Rot and so on. 3 selection of disease-resistant varieties. For the different diseases, select the species with corresponding resistance. 4 biological control. For example, the use of Dt emulsion 1000 times solution or 25% diflubenzuron 3 gel suspension 800 to 1000 times spray control of cabbage caterpillar. Insects can also be controlled by pests. In short, using the above method, we can reduce the number of times that we use chemical pesticides to control pests during the growth of vegetables.
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