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How to prevent vegetable blight from vegetable seedlings?
1. Seedbed preparation. It is necessary to choose a disease-free plot with high dryness, leeward sun, easy drainage, soil loose and fertile, and has not planted vegetables for many years. The old seedbed needs to be replaced with disease-free soil. Before sowing, it should be fully sun-dried, flattened, and covered with nutrient soil. The farmyard manure used to prepare the nutrient soil must be fully decomposed.
2. Seed treatment. Each bottle of new high-lipid membrane mother liquor is usually diluted 5-10 kg of liquid, soaked and dried, then dried. It can keep warm, moisturize and swell, improve the germination rate of seeds and make the seedlings strong. Repel underground pests and isolate viral infections.
3. Seedling management. Seedling management should be tailored to local conditions, scientifically regulate temperature, do a good job of water and fertilizer management, make the temperature suitable, sufficient light, and after a certain low temperature exercise, can cultivate strong seedlings with strong disease resistance. A true leaf top heart to 3 true leaves grows into a small seedling stage, which should increase light, increase ground temperature, and promote root development. Before and after the 3 true leaves, the seedlings should be divided into 3 to 4 days before the seedlings. The temperature should be lowered, and the wind should be released during the day to exercise the seedlings. After the seedlings are divided, the amount of air should be gradually increased to prevent the lengthening and reducing the disease.
4. Chemical control. At the beginning of the disease, spray the targeted fungicide with the new high-fat membrane for spraying, isolate the infection of the bacteria, resist the natural disasters and the intensity of photosynthesis, and improve the control effect.
How to prevent the blight of vegetable seedlings and share it with you here, I hope this article is helpful to everyone.
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