1. Rinse mouth arrangement: Kale avoid continuous cropping, the best choice with melons, beans, onion garlic, eggplant and food crops rotation, and choose no root barnyard disease.
2. Cultivation season and species selection: Cabbage can be cultivated in four seasons in Dali Prefecture, but the sowing of spring cabbage in the north-central China in August-September is prone to convulsions. Attention should be paid. There are Zhongcao No.11, Zhonggan No.21, Beijing Steel Ball, Green Beauty, Chunbao, Qingqiu, etc.; Big Cabbage has Jingfeng, Late Feng, etc. Purple Cabbage has early red, red stone. During the cultivation season, Jingfeng sowing date is from late October to next August, late-bloom from December to next July, small cabbage from November to next August.
3. Seedlings: The seedbed should be selected for soil fertility, drainage, and irrigation. The seedlings are 1 meter wide and can be sown after being drizzled. 6 to 7 square meters sowing seeds about 25 to 30 grams, after sowing cover fine soil 1 to 1.5 cm, and cover straw, loose hair or shading nets. In the rainy season, small arch shelters can be used to protect the seedlings from the rain. After the emergence, we gradually remove the straw or loose wool and other coverings. When 2 to 3 true leaves are homogenized, weak and weak seedlings are removed, keeping the seedlings at a distance of 3-4 centimeters, and removing the waste water 2 to 3 times in time. Pay attention to pest control.
4. Daejeon site preparation and planting: General Mushi rotted farmyard fertilizer 2000 to 3000 kg, 50 kg of bio-organic fertilizer applied to the ground after Mushi, according to 1.5 to 2 meters for smashing. Promote the use of plastic film covering planting, the use of black plastic film or weeding film can control the growth of weeds. When the seedlings have 5 to 6 true leaves, they can be planted. Watering in the morning, carefully raising seedlings in the afternoon, with more soil and less roots, and shortening the seedling period. Cabbage row spacing is 3030 centimeters; Cabbage rows are from 40 to 5040 to 50 centimeters.
5. Field management: After the planting and survival, pay attention to seedlings, proper control of watering, cultivating loose soil, and promoting root growth to prevent stems and leaves from becoming long, but spring and winter cabbage do not carry seedlings. The end of seedlings (about 10 days or so) is topdressing and irrigation, and 8 to 10 kg of urea, 10 kg of normal calcium, and 5 kg of potassium sulfate are used to raise seedlings and promote vegetative growth. Into the rosette period is to absorb fertilizer and water most time, this time should be heavy fertilizer once, with 15 to 20 kg of urea per mu, 15 kg of calcium, 10 kg of potassium sulfate, irrigation after top dressing. The late-maturing varieties depend on the growth conditions and can be top-dressed once before the middle of the package. In the strong growth of the ball stage, potassium dihydrogen phosphate can be used for extra-root dressing with 150 grams per acre, sprayed for 7 to 10 days, and sprayed for 2 to 3 times.
6. Pest control diseases
(1) Downy mildew: Use 69% Anke? Manganese Zinc WP 500 times, or 80% Mancozeb WP 600 times, or 72% urea cyanide MnZn 600x, or 25% metalaxyl WP 800 times, or 75% chlorothalonil wettable powder 700 times spray, alternating medication.
(2) Melasma: Use 10% difenoconazole (Shigao, Smart) water dispersible granules 1000 to 1500 times, or 50% iprodione WP 1000 times.
(3) Black rot: 70% available for sodium propionate (dikeshone) wettable powder 1000 times, or 72% for agricultural use streptomycin sulfate powder 4000 times, or 90% streptomycin soil soluble powder 4000 Double liquid, or 77% copper sulfate calcium (Donning) wettable powder 600 times spray control. Insect pests (1) Locust: It can be sprayed with 50% anti-inflavor WP 2000 times, or 10% imidacloprid wettable powder 4000 times, or 2.5% deltamethrin (disease) 3000 times spray.
(2) Plutella xylostella: Adult insects can be trapped using physical insecticidal lamps. Promote the use of biological pesticides to reduce drug resistance and prolong the control period. Can choose 1.8% avermectin EC 4000 times solution, or 10% chlorfenapyr (divided) suspension agent 1200 to 1500 times solution, or 2.5% more spinosad (spinosomid, vegetable hi) suspension agent 1000~ 1500 times the liquid, or 3% of locust boiled milk 1000 ~ 1500 times spray control.
(3) Cabbage caterpillar: Chemical control reference diamondback moth.
(4) Liriomyza sativae: Remove the vegetable residues damaged by Liriomyza larvae; use insect fly paper and yellow plates to trap and kill adults; see egg-laying marks and feeding holes, and start spraying. Select pesticides and use them alternately. The following agents can be used to prevent and cure: 148% chlorpyrifos (Loss Ben) EC 50 ml plus water 40-50 kg uniform spray; 25% avermectin EC 3000 times spray at the initial stage of pests; 375% ciprofloxacin (pig ) Wettable powder 5000 to 7000 times spray; 45% fluorfenilon 2000 times spray.
(5) timely harvest: According to the growth of cabbage and the needs of the market, one after another harvest market. When the ball size is fixed, the compactness can reach 80% when harvested.
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