1. Variety selection: Be sure to enter the species through formal channels to avoid losses. Late-maturing species can use "Premature Beijing New Third" and "Beijing New Third"; medium-maturing species use "small miscellaneous 66", "small miscellaneous 67", "Beijing Da Nuoxin", etc.; 50 "," Miscellaneous 51", "Beijing Autumn 60" and so on.
2. Base fertilizer: 5000 kg per hectare of organic fertilizer, 500-700 kg of active organic fertilizer, 20 kg of diammonium phosphate, 20-30 cm tillage, 20 cm high, 25 cm wide, high and medium sized The ridge distance is 60-70 centimeters, and the small breed is 55-60 centimeters long.
3. Seed treatment: Use 50% acetaminophen WP, 50% methine WP or 75% chlorothalonil WP to prevent seed black spot, and select seeds at 0.4% of seed weight; use for controlling downy mildew 72 % Frost Urea Manganese Zinc WP or 25% Rhizoctonillus seed dressing according to 0.3% of the seed amount; Prevention of soft rot with Caifengning or special seed coating agent seed dressing.
4. Timely sowing: The optimum sowing date is August 4-8, generally 200-250 grams per acre, sowing depth of 0.5-1.0 cm, after the ditch spread sowing after the cover soil ditch.
5, fertilizer and water management (1) seedling management: the use of "three water Qimiao, Wushui Dingke" watering method, seedlings should adhere to the water pouring. Immediately after the emergence of seedlings, make up the seedlings to ensure that the whole seedlings; pull cross-time seedlings once, 3-4 leaves the second time the seedlings, 5-6 leaf leaves the third seedlings. Pay attention to retain strong seedlings, eliminate diseased seedlings, weak seedlings, and miscellaneous seedlings. After each seedling, the cultivator timely cultivated; 8-10 leaves of Dingmiao seedlings, leaving 1800-2000 strains of large-sized varieties per mu, medium-sized varieties of 2000-2200 strains, and medium-sized varieties of 2200-2400 strains.
(2) Rosette period management: After the Dingmiao grows, the ditch is topdressed at 12-15 cm from the root, and 20 kg of compound fertilizer or 20 kg of ammonium sulfate is applied per acre. After top dressing, it is poured once, and 1-2 days after irrigating. Seedlings, generally wait until the outer leaves are dark green, and the seedlings are terminated when the stems are hypertrophied.
(3) Involuntary management: After the seedlings are finished, they should be poured with two waters. After 5-7 days, they should pour water. Don't flood the water. Stop watering about 7 days before the harvest. Fill the fertilizers in the early, middle, and late stages of the harvest. Ammonium sulfate 20-30 kg, 10-15 kg, and 10 kg were applied to each acre.
6. Pest control: mainly prevention, comprehensive control. Priority shall be given to the use of agricultural control, physical control, biological control, and scientific and reasonable chemical control, so as to achieve the goal of producing safe and high-quality pollution-free Chinese cabbage. The use of highly toxic, high-residue pesticides is prohibited.
Pharmaceutical control methods:
(1) Spray 20% virus A WP 500 times, or 1.5% phytoalexin 1000 times spray after virus disease is colonized.
(2) Downy mildew
72% cream urea manganese zinc wettable powder 800-1000 times, or 75% chlorothalonil wettable powder 500 times spray. 7-10 days, continuous control 2-3 times.
(3) Anthrax
72% Mancozeb WP can be sprayed 500-600 times, or 80% anthraquinone WP WP 800 times.
(4) Soft rot
72% of agricultural streptomycin wettable powder, or neophytin 5000 times, or 77% can kill wettable powder 500 times spray. 7-10 days, 2 consecutive times - 3 times.
(5) The rapeseed meal, cabbage caterpillar, and hopscotch were treated with 10% imidacloprid wettable powder 1500 times, and 2.5% high efficiency cypermethrin 2000-3000 times liquid was used for spray control.
7, timely harvest: tight contract to achieve timely harvest when the goods mature, low yield of premature harvest, too late to be vulnerable to frost damage, late-maturing varieties in Beijing suitable for harvest before and after the beginning of winter.
2. Base fertilizer: 5000 kg per hectare of organic fertilizer, 500-700 kg of active organic fertilizer, 20 kg of diammonium phosphate, 20-30 cm tillage, 20 cm high, 25 cm wide, high and medium sized The ridge distance is 60-70 centimeters, and the small breed is 55-60 centimeters long.
3. Seed treatment: Use 50% acetaminophen WP, 50% methine WP or 75% chlorothalonil WP to prevent seed black spot, and select seeds at 0.4% of seed weight; use for controlling downy mildew 72 % Frost Urea Manganese Zinc WP or 25% Rhizoctonillus seed dressing according to 0.3% of the seed amount; Prevention of soft rot with Caifengning or special seed coating agent seed dressing.
4. Timely sowing: The optimum sowing date is August 4-8, generally 200-250 grams per acre, sowing depth of 0.5-1.0 cm, after the ditch spread sowing after the cover soil ditch.
5, fertilizer and water management (1) seedling management: the use of "three water Qimiao, Wushui Dingke" watering method, seedlings should adhere to the water pouring. Immediately after the emergence of seedlings, make up the seedlings to ensure that the whole seedlings; pull cross-time seedlings once, 3-4 leaves the second time the seedlings, 5-6 leaf leaves the third seedlings. Pay attention to retain strong seedlings, eliminate diseased seedlings, weak seedlings, and miscellaneous seedlings. After each seedling, the cultivator timely cultivated; 8-10 leaves of Dingmiao seedlings, leaving 1800-2000 strains of large-sized varieties per mu, medium-sized varieties of 2000-2200 strains, and medium-sized varieties of 2200-2400 strains.
(2) Rosette period management: After the Dingmiao grows, the ditch is topdressed at 12-15 cm from the root, and 20 kg of compound fertilizer or 20 kg of ammonium sulfate is applied per acre. After top dressing, it is poured once, and 1-2 days after irrigating. Seedlings, generally wait until the outer leaves are dark green, and the seedlings are terminated when the stems are hypertrophied.
(3) Involuntary management: After the seedlings are finished, they should be poured with two waters. After 5-7 days, they should pour water. Don't flood the water. Stop watering about 7 days before the harvest. Fill the fertilizers in the early, middle, and late stages of the harvest. Ammonium sulfate 20-30 kg, 10-15 kg, and 10 kg were applied to each acre.
6. Pest control: mainly prevention, comprehensive control. Priority shall be given to the use of agricultural control, physical control, biological control, and scientific and reasonable chemical control, so as to achieve the goal of producing safe and high-quality pollution-free Chinese cabbage. The use of highly toxic, high-residue pesticides is prohibited.
Pharmaceutical control methods:
(1) Spray 20% virus A WP 500 times, or 1.5% phytoalexin 1000 times spray after virus disease is colonized.
(2) Downy mildew
72% cream urea manganese zinc wettable powder 800-1000 times, or 75% chlorothalonil wettable powder 500 times spray. 7-10 days, continuous control 2-3 times.
(3) Anthrax
72% Mancozeb WP can be sprayed 500-600 times, or 80% anthraquinone WP WP 800 times.
(4) Soft rot
72% of agricultural streptomycin wettable powder, or neophytin 5000 times, or 77% can kill wettable powder 500 times spray. 7-10 days, 2 consecutive times - 3 times.
(5) The rapeseed meal, cabbage caterpillar, and hopscotch were treated with 10% imidacloprid wettable powder 1500 times, and 2.5% high efficiency cypermethrin 2000-3000 times liquid was used for spray control.
7, timely harvest: tight contract to achieve timely harvest when the goods mature, low yield of premature harvest, too late to be vulnerable to frost damage, late-maturing varieties in Beijing suitable for harvest before and after the beginning of winter.
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