Kohlrabi is biennial plants of Cruciferae. The succulent root is an important juicy feed in winter and spring. The succulent roots are composed of stems and roots, and the upper part of 1/2 is a stem, which is green and has nodes and buds, and can generate small leaf clusters; The lower part is root, grayish white. The fleshy root skin is thick, the meat is white, the quality is hard, the water is less, the fiber is more, and the mustard is spicy and bitter. Chop it when you feed it.

Kohlrabi can be broadcast directly or transplanted. Direct seeding operators are labor-saving, the management of transplanted seedlings is convenient, and the land can be fully utilized. The sowing date of kohlrabi varies with the local climate. In the south of the Yangtze River, seeds are sown between summer and Bailu, and in the north of the Yangtze River, seedlings are sown between beginning of autumn and summer. Direct seeding can be done by drilling or hole seeding, and the sowing depth is 1 cm. After the sowing date is determined, a fertile, moist and well-ventilated plot is selected, and 1.500kg of human and animal manure is applied every 666.7 m, and the tillage depth is 20 cm. After drying, the clods are broken and leveled to make 1. 1 ~ 1.3m wide and 65438+. The sowing amount is 250-400g per 666.7m2. After sowing, cover the seeds with plant ash and water, and cover the edges with straw to keep moisture. Uncover the straw cover after emergence. After emergence, the seedling spacing is about 10 day, and the spacing is 5 cm. A small amount of topdressing after thinning. When transplanting seedlings, about 30 days after sowing, when the height of seedlings is 20 cm and there are 5 ~ 6 real leaves, they can be transplanted and planted. The row spacing of planting holes is 30-40 cm, the spacing between plants is 25-30 cm, each hole 1 plant, and about 5000 plants per 666.7 square meters. When planting, the root system of seedlings should extend into the hole, the main root should stand upright, and the covering height should be based on the lower part of cotyledons. Watering after planting helps to slow down the growth of seedlings. If the weather is dry, you need to water it once a day, but it is not advisable to water it too much. Keep the soil loose at seedling stage, and cultivate the exposed roots in time. Before fertilization after rain, intertillage should be carried out to weed, and intertillage should be stopped when the ridge is closed. Pay attention to topdressing, especially potassium fertilizer, after fleshy roots enter the peak period, and water them every 1 ~ 2 days after fertilization. Kohlrabi can be harvested after the fleshy roots are fully expanded and before bolting in spring.