1. Soil disinfection. 100 kg of lime and 500-1000 kg of comminuted grass were planted in each mu of protected area. After deep-turning into the soil, the ridges were filled with water, covered with plastic film, and the greenhouse film was sealed for 15-20 days. The soil temperature was raised to 45°C to sterilize and kill. Nematodes.

2. Sterilize the hole. Before the watering or before the rain, remove the diseased plants in the field, and apply 250 g of quicklime in the diseased cavity to sterilize it, which can prevent tomato blight and ulcer disease, eggplant bacterial wilt, leek white peony disease, melon disease, zucchini, potato, etc. Soft rot such as celery and carrot, and clubroot and soft rot of cabbage.

3. Control pests. After ploughing the land, 25-40 kg of lime are sprayed and dried for 5-7 days, which can eliminate the flea-killing vegetables. On sunny days, lime is sprinkled linearly between the rows of vegetables, and 5 to 7.5 kilograms per acre can be used to control earthworms.

4. Adjust soil pH. Lime 100-150 kg per acre, ploughed into the soil, adjust the pH of the soil, can prevent melon vegetables, blight, solanaceous vegetables, bacterial wilt, cruciferous vegetable clubroot disease and tomato virus disease, carrot bacterial soft Rot disease, melon wilt disease, pea blight and other diseases.

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