Broccoli, also known as broccoli, green cauliflower, and blue kale, is a variant of cabbage, with a well-developed root system, and is mainly distributed in a 30-cm-farmed layer. The main edible fat flower stems, short and crisp flower branches and spherical buds, the suitable growth temperature is 18-20C, is a wet and fertilizer-resistant crops. The cultivation techniques are as follows: 1. Selection of improved varieties: Selection of hybrid generation seeds, such as mantuo green, excellent, jade crown, Jade Emperor, etc. Second, timely sowing, nurturing strong seedlings: generally from sowing to transplanting takes about 35 days, summer and autumn sowing 30-35 days, winter and spring sowing more than 40 days, broccoli seeds are mostly imported seeds, the price is higher, should not be sowing should be on-demand After the nursery is well-established and on-demand, the density is 1.5-2 centimeters. The seedbed per acre is 12-15 square meters, 25-30 grams of seeds are used, 0.5-1 centimeters of fine excreta are planted, soaked with water, and covered. After removing the film, the top dressing is applied in time, and the compound fertilizer is poured into the water, or the biogas slurry is poured. The thiophanate-methyl is used to prevent disease once in 5 to 7 days before transplanting. 3. Transplanting: Immediately after harvesting, the ploughs, shreds and rakes should be plowed, shredded, and raked. The width of the rake is 2 meters, and the width of the grooves is 30 centimeters in depth. The field that used to be flue-cured tobacco leaves no time for ploughing after harvesting. The cultivator is cultivating loose soil and weeding the sorghum area, keeping the smoky scorpions thick and planting ponds symmetrically on both sides of the smoky soil. The distance between the ponds is 50 cm. The distance between the ponds is 5,050 cm, and 2500 per mu. When transplanting, 20 kg of compound fertilizer is used as the bottom pond fertilizer and the plants are irrigated. Fourth, the field management: (1) water and fertilizer management. A large area of ​​blue-flowered leaves is a hi-fertilizer crop. In principle, nitrogen is dominant and applies phosphorus, potash, and base fertilizers; moderate fertility is 1-2 tons of mature farmyard fertilizer, 8 kg of urea, 40-50 kg of calcium sulfate, and sulfuric acid. Potassium 8-10 kg. Top dressing: After 5-7 days, the seedlings are applied 0.3% of urea water once a day, 10 kg of urea and 5 kg of potassium sulphate are mixed during the lotus stage, and then the water is applied every 3-5 days to maintain the moist surface. , Heart and leaf turning period, 15 kilograms of urea per mu, watered once. Blue and white flowers are more sensitive to trace elements such as boron and molybdenum. The lack of boron will lead to the hollow of the flower axis. The vegetative growth period will begin to apply 0.2-0.3% of boron fertilizer 2-3 times every 7 days. (2) When the topdressing is applied for the first time, the tillage and weeding are performed once and the soil is cultivated. (3) The most common pest control is root rot and cruciferous diseases. METHODS: Seedbed and field rotation, drug control: Each methicillin pesticide such as thiophanate-methyl and other bactericidal pesticides were irrigated once in 10 days and 20 days after planting, and the dosage was 3-4 times that of spraying (spraying 50 grams per mu). The most common insect pests are Plutella xylostella and aphids, which are treated with biological pesticide "Green Wave" 800-1000 times Kung Fu EC 2000 times. V. Harvesting: When the flower bulbs are large enough, the flower buds are neat, and the flower bulbs can be harvested when the flower bulbs grow to 8-12 cm in length. The stems are cut off with a knife. The stems are 15 cm long and retain 5-6 young leaves. VI. Clean up the garden: Clean the diseased leaves and weeds, concentrate on harmless treatment, and keep the fields clean.
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