Select suitable soil and pay attention to cultivation management. Cultivation time: sowing from March to early July. Autumn cabbage is sown in early and middle July. Sow winter cabbage 165438+ from late June to early October. 50-75g seeds per mu. Seedling raising method: select fertile and moist vegetable soil, turn it over, bake it before sowing, then flatten it, apply decomposed human excrement and urine liquid 1500 kg as base fertilizer per mu, dry it, rake it flat, and then sow it, with seeds per square meter 10 g. Then cover it with a layer of screened fermented coal ash soil (or fine soil mixed with fertilizer). In case of drought, put up a flat shed to shade the sun (it is best to use a sunshade net), keep the soil moist for a long time, remove impurities and weeds in time after emergence, and spray chemicals to control pests and diseases.

Field cultivation:

Seedling age: 25-30 days.

Transplanting: select seedlings with strong and disease-free leaves, broken leaves, consistent growth and good roots, and take them to transplant.

Soil consolidation in the field: apply base fertilizer, turn the ground about 15-20 days before transplanting, and let it bake about 10 days. Do soil consolidation, coarse consolidation and fine consolidation again two days before transplanting, then apply base fertilizer, and apply 2000 kg of decomposed human excrement and urine liquid and 25 kg of calcium superphosphate per mu.

In order to concentrate fertilizer efficiency, base fertilizer can be directly applied to planting holes, and the hole soil can be transplanted after it is dried and mixed evenly.

After transplanting, each seedling is watered with a little water, 0.5 kg per plant, and then watered once a day until it survives.

Topdressing, irrigation and drought resistance: topdressing for the first time after survival, diluting human and animal manure by 0/0% per mu/kloc, 600-800 kg per mu.

After that, topdressing was carried out for 3-4 times at the sowing date, before heading and in the middle stage, the concentration of topdressing was 30-40%, and the dosage was about 0/500 kg per mu/kloc. Top dressing is mainly human manure and pig manure, and a little chlorine fertilizer can be added. Generally, 0.5 kg of urea can be added per 1000 kg.

Then, during the whole growth period, the chemical fertilizer is only added less than twice, so as not to affect the quality.

When the temperature is high, the sun is strong, and it is sunny for a long time, corresponding measures can be taken to fight drought by lifting water and watering seedlings or watering them wet.

Irrigation should be carried out in sunny evening, and the residual water in the ditch should be drained immediately after irrigation on the ditch surface, so as to avoid root retting and affecting growth.

In addition, the topdressing of spring cabbage is different from that of autumn cabbage.

In the case of the same base fertilizer, spring cabbage is generally watered with clear water to achieve the purpose of drought resistance and seedling protection in winter, but it is not advisable to water it too much. As long as the seedlings grow well and are not short of water, don't water them.

After beginning of spring, Chinese cabbage grew rapidly. At this time, it is appropriate to topdressing the heavy fertilizer with the concentration of about 40% for 2-3 times, and when the leaves between plants are full of soil, 1 time is called "row closing", and 1-2 times before heading and middle stage.