Flat border cultivation can be used, and autumn extension cultivation can be covered in the later period, and it can continue to be listed after New Year's Day.
Detailed management methods can refer to the following methods: 1. How to plant overwintering cabbage in greenhouse 10 from the early stage to the middle and late stage of 1 10, the seedlings with short seedling age can be sown thinly, the seedling age is generally 30_40 days, and the seedlings with long seedling age can reach 60_70 days, and the seedlings are divided once in the middle to cultivate large seedlings and strong seedlings.
1, Chinese cabbage border planting should be leveled by applying sole fertilizer.
It can be made into a flat bed or a high bed.
The flat border can be made 1.2_ 1.5 meters wide, and the seedlings should be planted according to the plant spacing.
The high frame can be made into a height of 10_ 15 cm, a width of about 30 cm, and a groove width of about 30 cm. Two rows of Chinese cabbage were planted on both sides of the high border, with a spacing of about 30 cm.
2. After planting seedlings according to holes, water them once, and only soak the clods to prevent the ground temperature from decreasing after flooding. After 7_ 10 days, water was poured again, and then intertillage was used to loosen the soil, which promoted the growth of root system, accelerated the growth of leaves and differentiated new leaves to form fat rosette leaves, laying the foundation for early fruiting.
3. Fertilizer and water management of Chinese cabbage: After the seedlings are fixed, combined with watering, urea can be topdressing 65,438+05 kg per mu. After the seedlings are delayed, the watering should be controlled, and the seedlings should be hoed 2-3 times in time and squatted lightly for about 65,438+00 days.
In the early stage of pelletizing, it is necessary to strengthen fertilizer and water management, increase watering amount, and combine topdressing urea 10 ~ 15 kg per mu to promote its growth as soon as possible.
In the fruiting period, bulbs grow fast and need a lot of water, so they need to be watered once they are dried, usually once every 5 ~ 7 days, and the seeds are stopped 7 days before harvesting to prevent bulbs from cracking, which is also beneficial to storage and transportation.
4. Cabbage protection in late June 65438-1early October 1 165438, the weather turned cold and it was not suitable for cabbage growth, so it was necessary to cover the film in a small arch shed.
In the early stage of coverage, if the weather is good, it should be ventilated.
The temperature is kept at around 20℃ during the day and around 10℃ at night.
Later, with the decrease of temperature, according to the growth status of Chinese cabbage, the film was tightly covered to maintain its growth as much as possible.
5. The main diseases and pests of Chinese cabbage are black rot and downy mildew. At the initial stage of black rot, streptomycin 100 ~ 200mg/L can be used, and sprayed 1 time every 7 days, 2 ~ 3 times in total.
At the initial stage of downy mildew, 800 times of 25% Ruifulu wettable powder or 600 times of 75% chlorothalonil wettable powder, 1 time, once every 7 days, and sprayed continuously for 3 ~ 5 times.
6. Harvest of Chinese Cabbage Once the bulb of early-maturing Chinese Cabbage is formed, it will quickly turn into the full bulb period and harvest it in time when the bulb is tight.
Generally, the weight of a single ball is 0.5 ~ 0.7 kg, and the maximum weight exceeds 1 kg, with an average yield of about 5000 kg per mu.
7. The control method of cabbage downy mildew can adopt 50% dimethomorph 1500 times solution or 58% metalaxyl manganese-zinc 800 times solution or 64% oxadiazon manganese-zinc 800 times solution or 75% chlorothalonil 500 times solution, and spray it once every 5-7 days.
In severe cases, it can be sprayed once every 3-5 days, which can effectively prevent and control cabbage soft rot. Due to the increase of near humidity, it can be comprehensively controlled. 600-fold solution of 58% metalaxyl manganese and zinc, 800-fold solution of 20% dicofol or 50% dimethomorph 1500-fold solution and 800-fold solution of 3% zhongshengmycin can be sprayed every 5-7 days.