First, the choice of varieties Summer and autumn planted broccoli should choose strong varieties with good adaptability and high yield, such as green, Tokyo green, green and so on. Second, the cultivation of seedlings for age-appropriate seedlings from June to September, seedling age in 25 to 30 days. Seedlings are planted when the first true leaves of the seedlings are unfolded, and colonized when the true leaves are 4 to 6 pieces. Third, site preparation, planting and selection of strong water retention, rich in organic matter, high ground, well-drained land, after the cultivator squat. Each mu of cooked manure and other organic manure 2000 kilograms, compound fertilizer 33 kilograms as the base fertilizer, and then for sorghum, sorghum width 1.3 to 1.5 meters (bag ditch), from a small high ridge height of 15 cm. Double-row planting, spacing 50-60 cm, plant spacing 40-50 cm, planting about 2000 per acre. Fourth, field management 1? Fertilizer and water management: When planting, the rooting water should be sprayed. After the transplant, the water should be continuously sprayed 2 or 3 times in case of high temperature and sunny weather. After live planting, fertilizer is applied in a timely manner. The main measures are: 15 days after planting, combined with thin soil peanut bran water 15 days after planting, budding, after application of thin peanut bran water and 30 kg of Mushi compound fertilizer, after top flower ball harvesting per acre Topdressing 15 kg of compound fertilizer. Keep the soil moist throughout the growing season, timely drainage in the rainy season to prevent flood damage; in the dry season, especially in the development of the flower buds, more water is needed, and timely watering or irrigation. 2? Pest control: The main broccoli diseases are blight and downy mildew. The pests mainly include cabbage caterpillar and diamondback moth. Blight can be treated with 5% Jinggangmycin 1500 times spray; downy mildew can be sprayed with 64% antitoxic WP 500 times, or 58% metalaxyl MnZn wettable powder 500 times. Pieris rapae, Plutella xylostella can be used net 800 times solution of three moths, or 5% Rui Jin Su suspension agent 50 ~ 100 ml, or spray with 10% cypermethrin 3000 ~ 4000 times liquid control.
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