Anti-seasonal tomato cultivation techniques
First, the choice of species. The varieties with high yield, heat resistance, commercial property and disease resistance were selected for cultivation in protected areas. Second, nursery 1, seedbed preparation. In a plastic greenhouse, the nursery beds should be sited for management and convenient operation. Winter and spring seedlings adopt heating and heating measures such as electric heating, and summer and autumn nursery should be equipped with insect-proof shade facilities. Conditions can be used to cultivate seedlings and industrialized seedlings. Disinfect the nursery facilities before nursery. Use 30 to 50 ml of formalin per square meter of nursery bed, add 3 liters of water, spray bed soil, and cover with plastic film. Uncover the film after the day and sow after the smell has cleared. 2, nutrition soil preparation. Choose loose soil with good ventilation, neutral pH, no or less pathogenic bacteria and pests as nutrient soil. The proportion of its preparation is as follows: 6 fertile pastoral soils (requiring that no solanaceae crops have been planted in the past 3 years) and 4 decomposed manure round manures, and 1 kilogram of diammonium phosphate and 15 kilograms per cubic meter of mixed fertile soil after adequate mixing. Plant ash, 0.5 kg of carbendazim, soil, fertilizer, and medicine are mixed evenly, and will be prepared with a good nutrition soil made of 120 cm long, 600 cm long, and 10 cm high. 3, seed treatment. (1) Disinfection. The main method is to kill germs or viruses attached to the surface or even inside of the seeds. There are two methods, hot-spotting and chemical treatment. 1 soup soup stains. First, the seeds should be stained and soaked in a clean container with clean water, soak the seeds with water, rub them, rinse off the grains, remove the impurities, and then put them in warm water to make the seeds swell and the germs begin to sprout. Easy to be burnt in the next operation. The blisters are soaked in hot water at a constant temperature of 50-55°C for 3 to 4 hours and then soaked for about 5 to 10 minutes. The germination can then be carried out after the temperature is lowered in cold water. 2 trisodium phosphate seed. Clear water stains 3 to 4 hours later, then add 10% trisodium phosphate solution (50 grams of trisodium phosphate plus water into 500 grams) stain for 20 minutes, remove and wash with clean water, you can germination. (2) Seed germination. The disinfected seed stains should be washed out after 6-8 hours. The treated seeds are wrapped in wet towels, germinated at 25~30°C, and rinsed once or twice a day with fresh water. 4, sowing. The germination seeds can be sown after 70% of dew, and the seeds are selected to be sunny in the morning. Before seeding, the seedbed is poured into the bottom water, and the soil is leveled with the nutrient soil. Then the seed that prompts the bud is mixed with half of the nutritious soil and is evenly thrown into the lotus root, and then the nutrition soil is 0.8-1.0 cm, and the nursery bed is used for more than 50% per square meter. Diosperm wettable powder 8 grams, mixed with fine soil evenly spread on the bed to prevent damping-off. The spring nursery bed covers the surface of the film, and the summer nursery bed covers the shade net or the straw curtain. 5, management after sowing. When 70% of the seedlings are unearthed, the bed cover shall be removed, the membrane shall be removed and ventilated regularly, the light shall be increased to prevent the appearance of tall seedlings, timely replenishment of water shall be provided to prevent dryness, and 150 mg/mu or 75% of mancozeb weekly shall be used. 100 grams of Kanamycin (KH2PO4) 0.2kg/mu mixed spray once for preventing disease and keeping seedlings. In order to prevent seedlings from growing in length, 2 shoots of the true leaf stage are sprayed with 1000-1200 times Chilled Liquid to ensure that the seedlings are thick, thick and dark green. 6, after the seedlings and sub-seedling management. When the seedlings 2 leaves 1 heart, choose a sunny day, the first cellar water pulls seedlings, and then move the seedlings into the nutrition 钵 钵 钵 钵 钵 钵 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆 摆. The soil formula and treatment of the nutrient soil are basically the same as that of the nursery soil. After the seedlings are irrigated, they are poured with water once, and combined with watering, 70% Mancozeb 150g/mu or 75% benzodiazepine 110g/mu and potassium dihydrogen phosphate (KH2PO4) 0.2kg/mu mixed spray to prevent disease. Sub-seedlings are generally not released until the seedlings are warmed up. The temperature is mainly increased by the ground temperature, and new roots are promoted, and the seedlings are quickly reduced. One week before planting, ventilation should be used to cool the seedlings, keeping 15 to 20°C during the day and 5 to 10°C during the night. The criteria for strong seedlings are: spring seedlings, plant height 25 cm, stem diameter 0.6 cm or more, big buds, dark green leaves, no pests and diseases. Xia Yumiao, 4 leaves 1 heart, plant height of about 15 cm, about 0.4 cm thick stems, 25 days of bred.
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