1 variety selection
It is advisable to use varieties with strong disease resistance, good quality and high yield, such as spring and autumn 54, spring and summer king, Longchang white, Lubai 7 and other cabbage varieties.
2 Soil preparation and fertilization
Cabbage fields require rotation with corn for more than three years and are not continuous with cruciferous crops. Generally, stay in the sun, and then ridge again in the middle and late June, turning the weeds into the soil, the ridge height is 15-18 cm, and the ridge width is 70 cm. Then apply 75-90 tons of decomposed organic fertilizer per hectare without using chemical fertilizer. Apply the fertilizer to the ditch, then use the plow to break the ridge, so that the fertilizer is buried in the ridge, and finally suppress it again, so that the soil in the ridge is tight and protected, and the seeding state is reached.
3 seed treatment and sowing
Seed treatment using warm soup soaking method, first seed in cold water infiltration, and then placed in 55 ° C water for 15min, immediately removed to cool water to cool down, dry after sowing; pesticide seed dressing with 50% Fumei double wettable powder inoculant 0.2% to 0.3% of the amount of seed dressing. Sowing from July 18 to 25, the amount of seeding per hectare is 3kg, and the seedlings per hectare are 3.8 to 42,000.
4 field management
After the emergence of cabbage, the seedlings are generally in the first two leaves, 4 to 5 seedlings per hole; 4 to 5 pieces of true leaf time, 2 to 3 seedlings per seedling, 2 to 3 seedlings per hole; 6 to 8 true leaves When the seedlings. Timely shovel and smash the grass, generally after 6 to 7 days after the emergence of cabbage, or after the first seedlings, the shovel head is everywhere. At this time, the seedlings are small, the roots are shallow, and the shallow shovel is 3~4cm, mainly in addition to the grass; All over the place, mainly loose soil, deep shovel 8 ~ 10cm; shovel the third time before cabbage ridges, shovel the soil on the ridge platform, and expand the leaves of the rosette to prevent the plants from standing upright and causing soft Rot occurs. In the rosette stage and the ball-forming stage, if there is a phenomenon of de-fertilization, 7.5 kg of potassium dihydrogen phosphate solution and 7.5 kg of urea solution may be sprayed per hectare. In areas with irrigation conditions, irrigation can be carried out in combination with topdressing during the rosette and ball-forming period, but sewage irrigation is strictly prohibited to prevent soil pollution.
5 pest control
5.1 Disease prevention
a. In the early stage of downy mildew, 80% gramicidin 400-600 times liquid or 72% gram dew 600-800 times liquid spray is used for prevention and treatment.
b. In the early stage of soft rot, use 30% DT bactericide 1000 times solution or 3% gram bacterium 600-800 times solution spray control.
c. In the early stage of viral disease, 2% gram gram of water syrup 200-250 times solution or 20% virus A WP 600 times solution spray control.
d. Black spot disease is controlled by spraying with 75% chlorothalonil 600 times solution or 50% chlorhexidine 1000-1500 times solution.
e. White spot disease is controlled by spraying with 70% thiophanate-methyl WP 800 times.
5.2 Pest Control
a. The armor is sprayed on the 3rd day after the emergence of cabbage, with 48% lesbian cream 1.5L/hm2 or 90% trichlorfon crystal 800~1000 times.
b. Pieris rapae with BT Sudley 1.5 ~ 2.2L / hm2 or strong enemy 312 biological pesticide 800 ~ 1000 times liquid spray control.
c. Aphids are sprayed with 10% Dagong WP 1500-2000 times.
d. radish fly with sugar 500g, vinegar 1kg, trichlorfon 25g, water 1kg made of a mixture to trap adult, or in the peak of adult spawning, using 48% lesbian emulsifiable concentrate or 90% trichlorfon crystal 600-800 Double liquid irrigation and control.
6 harvest
Harvested around October 5th, generally 15d before harvesting, pesticide residue detection of cabbage, requiring clean dishes or packaging to be listed, pesticides banned 30d before harvest.
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