Chinese cabbage likes cold and cool, but it is resistant to low temperature and high temperature. Basically, it can be planted all year round, and the usual sowing time is from August to165438+1October.
Because Chinese cabbage is easy to germinate, it can be sown directly without accelerating germination, and varieties with short growth cycle and high yield should be selected when sowing. Water should be poured on the soles of your feet before sowing. In general, drilling or sowing should be adopted. Pay attention to sowing evenly and thinning appropriately when sowing. If it is planted in August, it should be covered with sunshade net or shade shed. The seedlings can appear in three or four days. You don't need to water before going out. If it is particularly dry weather, you can spray water on the plastic film to keep moisture.
Management of Chinese cabbage after emergence ◆ Pay attention to clear the plastic film in time after emergence. When the Chinese cabbage grows to 1 true leaves, the first thinning should be carried out, and the seedlings that are too dense should be sooner rather than later.
◆ When the Chinese cabbage grows four true leaves, the second thinning is started, this time, the weak seedlings are removed and the diseased seedlings are removed. At the same time, attention should be paid to pulling out weeds.
◆ It can be transplanted into the field 20 days after sowing. Pay attention to the row spacing of transplanted plants and water the roots immediately after planting Chinese cabbage. Pay attention to watering once a day within 3 ~ 5 days after planting. Watering it later depends on the weather. At the same time, watering should be combined with topdressing. After the seedlings of Chinese cabbage are planted and survive, it is necessary to topdressing human and animal manure with the concentration of 15%. It is also possible to harvest directly in the form of thinning instead of planting permanently until all crops are harvested.
◆ Chinese cabbage can be harvested one after another. Remember to topcoat diluted human and animal manure once at each harvest, and the topdressing concentration should be gradually increased to 40%.
Although Chinese cabbage can be sown all the year round, it is still the best season to eat Chinese cabbage from 65438+February to March of the following year. This is because the temperature in winter is low, the carbohydrates in Chinese cabbage can be converted into sugar, and the content of some nutrients such as oil will increase, making it soft, waxy and sweet. Therefore, Chinese cabbage can be sown later. Usually, after the first frost, Chinese cabbage will gradually become soft, waxy and sweet.