Some vegetables grow poorly in the summer when the hot season is live, and they are also susceptible to pests and diseases, so nursery cultivation is required. In summer, the vegetables grown in the hot season include cauliflower, Ganlan, celery, Chinese cabbage, cabbage lettuce, and tomatoes cultivated in greenhouses. one. Choose a good block: choose a good soil permeability and water retention, and can irrigation energy row. Avoid continuous cropping, so as not to harm the soil-borne diseases, and avoid land plots for serious land pests. After the plots are selected, adequately decomposed farmyard manure should be used as the base fertilizer. two. Prevention of high-temperature hazards: When lettuce and celery sprout at high temperatures, it is difficult to soak the seed for 8 hours and then use a wet gauze to wrap it in a well or in a cold place to germinate. Or cold treatment, celery is 2-5 °C 48 hours, lettuce is 5 °C 72 hours, can promote germination, increase germination rate. You can also sprinkle some cropped straws or straw on the seedbed; or shade nets covering the seedbeds, shading canopies, overlying old membranes, etc. three. To prevent pests and diseases: High-temperature vegetable virus disease occurs seriously, and various measures should be taken: In addition to the above-mentioned nursery facilities, you can also use Green Hunter No. 1 seed dressing, 1-1.5 grams per kilogram of seed medication; select anti-virus varieties; use nylon net Yarn smashing; use silver-gray film to avoid locust; timely control of aphids and other pests and diseases. four. Prevent heavy rain hazards: Heavy rains in the summer cause the soil to bind, which is not conducive to seed germination and unearthing. The following measures should be taken: choose a high dry land to build a seedbed; be vulnerable to rainstorm areas should choose sandy loam seedlings; smooth drainage around the seedbed, use temporary cover to reduce heavy rain hazards; after sowing, in the event of heavy rain, seeds not found, after the rain in the seedbed Shallow cultivator to prevent soil knots. Fives. Prevention of Drought Hazards: The following measures should be taken: seeding in seedbeds with seeded water, or planting with sufficient water and then sowing; mulching (immediately after emergence); watering the seedbed in the morning or evening. six. Prevent seedlings leggy: high temperature season seedlings, vulnerable to procreation, to take the following measures to prevent: morning and evening with a watering can, timely seedlings or seedlings; seedlings of the nutritional area should be larger; cucumber, tomatoes can be sprayed with ethephon to control seedlings leggy. Tomato in the 5 leaf, 7 leaf stage with 40% to 50% chlorcholine 1000 times each spray once, can make the seedling thick, thick green leaves, leaves thickening, and promote flower bud differentiation. Roasted Buckwheat Flour,Toasted Buckwheat Flour,Organic Buckwheat Bread Flour,Health Buckwheat Bread Flour Huantai Biotechnology Co., Ltd. , https://www.huantaifds.com
High temperature season vegetable seedling raising technology