Winter vegetables are usually sown from September to December.

Planting methods

1. Land preparation and fertilization

Winter vegetables feed on tender stems and leaves, so they need to be harvested multiple times a year, so the terrain must be selected Flat, loose and fertile land is used for planting. It is generally made into a flat border, and sufficient base fertilizer is applied, mainly organic fertilizer, supplemented by Bika microbial inoculant. The width of the border is about 1 to 3 meters to facilitate harvesting. Winter vegetables have strong fertility resistance and require a large amount of fertilizer. After sowing, human and animal manure can be poured as seed fertilizer.

2. Sowing and seedling raising

Both direct seeding and seedling transplanting can be used. Generally, 1-1.5 kilograms of seeds per acre are used. The sowing method can be broadcast or hole sowing, and the amount of seeds used for broadcasting is relatively large. Large, but the amount of seeds used for hole sowing is small. Hole sowing controls the spacing between plants to about 25 centimeters, sowing 4 to 5 seeds per hole. Generally, about 250 seeds per mu are used. For broadcasting, 0.5 kilograms of seeds are needed. For seedlings, 25 grams of seeds are needed per mu. After sowing, cover with a shallow layer of soil and control temperature and moisture. After emergence, seedlings should be planted and planted at the appropriate time. Once the seedlings have grown to a certain level, they can be planted.

3. Planting

The planting density should be determined according to the harvesting requirements. The harvesting requirements are different, and the planting density is also different. For the purpose of harvesting seedlings, appropriate dense planting can be done. 15 cm square is appropriate, and if you harvest young shoots multiple times, 25 cm square is appropriate.

4. Field management

During the growth period, winter vegetables should be cultivated and weeded in time to prevent weeds from competing with winter vegetables for growth space, nutrients and water. For shoots, during the peak growth season, top dressing must be carried out in time after each harvest to replenish a large amount of nutrients lost due to harvesting. Top dressing is generally based on urea. The main pests of winter vegetables include cutworms, Spodoptera litura and aphids, which can be trapped with poisonous baits or controlled by trichlorfon spray. The main diseases include anthracnose, root rot, etc. Anthracnose can be controlled with chlorothalonil, and root rot can be controlled. Carbendazim control.