Red cabbage is also known as red cabbage and purple cabbage. It starts from the seedlings to the ball, and the ball is purple-red, beautiful and attractive. Its characteristics are cold resistance, heat resistance, disease resistance, drought tolerance, moisture resistance, fertilizer resistance, fast growth, and harvesting after 65 days of planting. The single ball weighs 2-3 kilograms and can produce up to 5,000 kilograms per mu. The cultivation techniques are now briefly introduced.
1. Sowing seedlings. Spring cultivation can be planted in seedlings from November to early March, but it should be insulated with plastic film arches in the same way as canola. Autumn cultivation should be carried out in July-August. The seedbed is required to be deep-turned and whitened, and the base fertilizer is applied. The sputum is flat and fine. One week before sowing, the bed surface is sprinkled with decomposed human excrement. The seedbed is 1.4 meters wide and the ditch is 30 cm. The seed is covered with fertile soil or ash. It is advisable not to expose the seeds, and the water is kept to keep the soil moist, and the seedlings are 5-7 days later.
2. Interplanting seedlings. When the seedling grows a true leaf, it is necessary to carry out the seedlings. The crowded seedlings and the long seedlings are properly removed, and the seedlings with short sections and normal growth are cultivated. When the seedling grows to 6-8 leaves, it can be colonized. Cabbage is a hi-fertilizer crop, so Datian requires the application of base fertilizer, 2000 kg of farmyard manure, 1500/kg of human and animal manure, 50 kg of superphosphate, and 10 kg of potash, all mixed with soil, and the vegetable plot is 1.7 m wide. 2 rows per ridge, the row spacing is 3.3 cm × 50 cm, and 3,000 plants are planted in acre.
3. Daejeon management. After the seedlings survive, the autumn and early autumn will be dry and the water will be watered once a day in the early morning and evening to keep the soil moist. In the ball-forming period, it is necessary to fully supply water, combined with cultivating and weeding, and suitable for topdressing. If there is too much rain, it is necessary to clear the ditch in time, otherwise it will grow poorly. Cabbage needs more fertilizer during the ball-forming period (the core period), it is necessary to re-fertilize the fertilizer, promote the ball to be strong, increase the yield, apply manure urine 2000-25o0 kg, or urea 10 kg.
4. Pest control. The disease of cabbage is mainly "black sputum" (but rare), and can be controlled by using thiophanate or carbendazim 800-1000 times. There are many pests, and it must be carried out frequently. The main ones are cabbage caterpillars and diamondback moths. They can be sprayed with pyrethroid pesticides and refined trichlorfon.
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