Planting techniques of overwintering cabbage

Cabbage is a kind of popular vegetable. There are many varieties of cabbage in winter, and the quality is mixed. Many overwintering cabbages are inefficient. So what about winter cabbage cultivation techniques?

1. Seedling: winter cabbage can be sown from late September to early October. Early seedling can form large seedling with strong winter ability, but it cannot be blindly early seedling. Large seedling is easy to vernalize and bolt. Therefore, the seedling time should be controlled from late September to early October. The seedbed is 40 - 50 square meters per mu, the seedbed is leveled, 1kg of diamine is evenly spread and mixed with the seedbed soil every 50 square meters, the soil moisture is thoroughly watered, and the seeds are evenly sown after water permeates, 60g of seeds are used per mu, the seeds are evenly distributed and sparsely sown during sowing, fine soil with a thickness of 0.2 cm is covered, the film is covered to preserve the soil moisture, and the film is removed after three days.

2. Seedbed management: seedbed after emergence see dry see wet, 25 days-35 days later, seedlings grow to 35 leaves can be transplanted field.

3. Transplanting: transplanting seedlings from late October to early November, planting 3500 ~3800 plants per mu with plant spacing of 45× 40cm. Water immediately after planting. If conditions permit, apply 50 kg diamine or 3 - 5 square chicken manure per mu as base fertilizer. Apply base fertilizer when soil preparation.

4. Plastic film: cover cabbage seedlings from the end of November to the first ten days of December to preserve moisture, cabbage seedlings will not be introduced, and no watering will be carried out in winter.

5. Small arch shed: early listing can be covered in the middle of January small arch shed, this mode of high cultivation efficiency. Small arches need not be covered with straw and straw. The shed was removed at the end of March.

6. Spring management: in the middle and late March, seedlings will be led out of plastic film, soil pressure, plastic film can not be removed to preserve moisture and temperature. At the end of March, water according to soil moisture content, and apply 25 kg/mu of carbamide with water flushing when watering.

7. Embracing period management: in the middle and late March, the seedlings will be led out of the plastic film, soil pressure, plastic film can not be removed to preserve moisture and temperature. At the end of March, water according to soil moisture content, and apply 25 kg/mu of carbamide with water flushing when watering.

Cabbage overwintering needs to pay attention to the work of heat preservation, lest the temperature is too low, affecting the development of cabbage.