Scientific selection of seedlings. In order to increase economic efficiency, attention should be paid to the combination of early, late-maturing and late-maturing varieties, and varieties with strong plant growth potential, dark green leaves, waxy wax, dense flower buds, small buds, and large balls should be selected. The broccoli has a short seedling age (30 to 35 days) and can be raised in the middle or late October depending on the circumstances. Seedlings can be used for nutrition (10 cm l0 cm) or nutrition grid method (8 cm 8 cm), nutrient soil configuration with 8 fertile pastoral soil + 2 fully decomposed chicken manure or sheep manure, soaked after pouring 1 time and water Spraying a new high-fat film to increase the emergence rate, 2 to 3 days after the emergence of weeds, the seedbed should always be kept moist, when 1 to 2 true leaves and time seedlings 1 to 2 times, remove thin and dense seedlings. The bed temperature is maintained at 20-30°C. Conversely, if the bed temperature is too low and the seedling age is too long, it will cause small old seedlings, which will result in short stature and reduced yield after planting. If the temperature of the bed is too high and the temperature is too high, then the weak seedlings will be formed in a leggy manner, resulting in weak plant growth and reduced yield. When the seedlings grow to 5 to 7 true leaves for about 30 to 35 days, fertilizer control, water control, ventilation and dehumidification, and hardening of the seedlings for 3 to 5 days are performed to increase the survival rate of transplanting. 2. Reasonable colonization. Before planting, 4,000 kg of high-quality farmhouse manure, 15 kg of diammonium, 10 kg of ammonium nitrate, plowing, fine leveling, ridging with 70+50 cm wide and narrow rows, planting fertilizer and water, and using plants together The electronic fertilizer utilizes the high-energy electrons emitted from the photosynthesis of the plants themselves and the principle of polarity induction of plant electrons to improve the cell division, molecular synthesis, and nutrient matching digestion levels, accelerate the metabolic frequency, and activate the plant nutrient system to produce a superior fertilizer effect. The temperature is kept at 8-24°C to promote plant growth and increase leaf area as soon as possible. About 10 days, with watering topdressing ammonium nitrate 15 kilograms, after the top of the ball appeared after the application of ammonium nitrate 6 kilograms, significantly after the bulb temperature remained at 15 ~ 18 °C, less than 8 °C, the flower bulbs grow slowly, greater than 24 °C, loose flower bulbs, the whole plant growth temperature should not exceed 32 °C. 3. Pest control. Vegetable pests and diseases should be mainly prevention, and the use of ecological agents, vegetables, stems and spirits can make plant stem thick, thick leaves, fresh leaves, plants lush, natural taste. At the same time, it can increase the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons.
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