The sowing date of Chinese cabbage cultivation in the north is relatively strict. The seeding period of live broadcast in the Beijing-Tianjin region is in early August. The seedling cultivation is 3-5 days earlier than the live broadcast, and the seedling period is about 20 days. The middle and lower reaches of the Yangtze River are in mid-August, while southern China can be sown from September to October. Autumn cabbage nursery, south and north are open field nursery. The choice of terrain is high and dry, and drainage is good. No cruciferous vegetable plots have been planted within two years, and tomatoes, peppers, and zucchini with severe virus disease should also be avoided. The flat stilts are 1.2-1.5m wide, 8-10m long, and 12-15cm high. The decomposed organic fertilizer is applied in about 100kg, compound fertilizer is 0.5kg, and the fertilizer is mixed with mashine, irrigated with water, and the dried seeds are sowed. Each squaring area is sown with 4-5g. The planting area can be set at about 15mu per mu. In the event of rain and no rain protection facilities, we can use the 8-10 cm row spacing in the seedbed to draw shallow trenches, cover them with fine sand, and then cover with fine soil about 1 cm thick after the rain. Chinese cabbage seedlings are planted in autumn, and if it does not rain after sowing, it will be poured into a small water on the third day. After emergence, it is still necessary to pour water in order to cool down and humidify. When it rains, it must be drained in time. After the emergence of seedlings and weeding, weeding. Autumn seedlings, young seedlings are young, seedlings are short, and generally do not divide seedlings. When the basal leaves are unfolded, two or three true leaves are once seedlings, the seedling distance is 4-5cm and 6-8cm, and the seedlings are 3 or When 4 true leaves spread out, the seedlings colonize. Vet Ultrasound Scanner,Ultrasound Scanner For Vet,Ultrasound Scanner For Horse,Animals Ultrasound Scanner Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com