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 weed into the soil, the ridge height is 15-18cm, and the ridge width is 70cm. Then apply 75-90 tons of decomposed organic fertilizer per hectare without using 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%-0.3% seed dressing. Sowing on July 18-25, the planting amount of hectares is 3kg, and the seedlings per hectare are 3.8-42 million.
4. Field management
After the emergence of cabbage, the seedlings are generally in the first two leaves, 4-5 seedlings per hole; 4-5 seedlings in the second leaf time, 2-3 seedlings per hole; 6-8 true leaves When the seedlings. Timely shovel and smash the grass, generally 6-7d after the emergence of cabbage, or shovel head after the seedlings. 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 softness. 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.
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