When is the best month to sow Chinese cabbage?

The best sowing date of Chinese cabbage is August-September.

But there are many varieties, which can be divided into three kinds: spring cabbage, summer cabbage and autumn cabbage, and their planting time is also different. Planting time between north and south: there is little difference in planting time between north and south, and it can be planted in spring, summer and autumn. Greenhouse planting time: the sunlight greenhouse environment is suitable. If the conditions are well controlled, cabbage can be planted all year round.

Chinese cabbage is native to China, and its common producing areas are Beijing, Gansu, Shandong, Heilongjiang, Jiangsu, Hebei and Tianjin. Beijing cabbage can be planted in spring and autumn, with a growth cycle of about 60 days. The leaves of Chinese cabbage here are light green, and there is no fluff on the surface, so the plant has good disease resistance. Tianjin cabbage is very famous, from September to April the following year. Its quality is tender and smooth, and its nutritional value is high.

Fertilizer and water management of Chinese cabbage

The demand for fertilizer in Chinese cabbage seedling stage is not great. The first is seedling fertilizer, usually when Chinese cabbage grows to three or four true leaves. At this time, according to the growth status of Chinese cabbage seedlings, about 5 kilograms of ammonium sulfate is generally applied per mu, and it should be watered immediately after fertilization. The second topdressing at seedling stage is usually carried out about ten days after transplanting. Generally, 5 kg of urea is topdressing, and it is best to bury it in a shallow ditch next to cabbage.

If the soil is dry at the seedling stage, it is prone to virus disease in case of high temperature, so it is necessary to water more to cool down and keep the soil moist. In the absence of rain, various measures should be taken to conserve moisture, and small water should be poured frequently to accelerate the emergence of seedlings. If the leaves are yellow, 5 ~ 7 kg of ammonium sulfate can be applied per mu, or 200 kg of decomposed human excrement and urine can be added with 10 times of water for topdressing to raise seedlings.