Key Cultivation Techniques for High Yield and Good Quality of Chinese Cabbage
First, the choice of species. Select disease-resistant, high-quality, high-yield, strong-resistance and good-commercial varieties. Second, land preparation. Immediately after the harvest, plowing and stalking were used. Each acre was applied with 2 to 3 tons of farmyard fertilizer and 15 to 25 kg of superphosphate. The soil was used as base fertilizer. Third, seed processing. Before sowing, the seeds were soaked in warm water at 55°C. After 15 minutes, they were dried with carbendazim or with seeds of 0.3 to 0.4% of thiram or chlorothalonil to prevent downy mildew, melasma and anthracnose. Fourth, strengthen field management. 1, suitable time seedlings and Dingmiao, remove field weeds to promote robust seedling growth. 2, timely fertilizer, seedlings long to pull the cross when chasing the first time the fertilizer, with clearing water to raise seedlings; the second time after the fixed seedlings with manure water plus 1% of urea topdressing; the third in the rosette period, each Mu 15 kg urea, potassium sulfate 10 kg topdressing; the fourth is the key dressing period, the beginning of the ball, 30 ~ 35 kg of urea per mu, potassium sulfate 10 kg, pouring water. In the middle of the ball, 0.3% potassium dihydrogen phosphate should also be sprayed for extra-root fertilizer. 3, pest control. According to the occurrence and occurrence of diseases and insect pests, pest control measures should be carried out in a timely manner to master the principle of prevention and control. For the diamondback moth, cabbage caterpillar, yellow striped triceps and underground pests, 2.5% deltamethrin EC can be used to prevent and control the disease. Fifth, timely harvest. When the Chinese cabbage is wrapped and the ball is tight, the outer leaves turn yellow after harvesting.
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