The growing conditions of rakkyo are widely planted in Hubei, Hunan and other regions, among which Wuhan Jiangxia District, with the highest visibility, "Wuhan Jiangxia A. chinense" was awarded the Ministry of Agriculture's Geographical Indication of Agricultural Products in 2018, and China's important export of Korea, Japan and other countries of the vegetable "special vegetables" (mainly used for pickling). What are the requirements for the growing environment? What are the key cultivation techniques?

In this paper, the authors will answer the above questions in the context of a study on the cultivation of Chinese onion in Wuhan to promote the cultivation of this specialty vegetable. Chinese onion is a perennial rhizome plant of LILIACEAE. It has a delicious flavor and can be used as a vegetable. In addition, it has good medicinal value and is a veritable health food. Due to the high market demand, it is planted and distributed in Jiangxi, Fujian, Zhejiang, Hubei, Hunan and Sichuan. So, in the planting process of A. CHINENSE, what technical points need to be mastered in order to get a high yield? Let's take a look.

Planting onions, usually in August and September, at temperatures below 25 degrees Celsius. When planting Chinese onions, seedlings of uniform size should be selected. While selecting, remove the dead leaves from the seedlings. Plant onions about 30,000 plants in an acre of land. The depth of planting is about seven centimeters. If the seeds are shallow, the seedlings will not grow well. If the seeds are very deep, later expansion will not work. After sowing, the seeds should be watered carefully to keep the soil moist and germinate in about 7-10 days. Seedlings out of the flush in time to loosen the soil *, mulch, shallow hoeing to remove weeds. External application of 10% rotted thin manure water or 0.5% urea thin fertilizer water, the amount of 1.5-2 tons / mu. After spring, use urea 20-60 pounds/mu, potassium sulfate 20 pounds/mu, sprinkle 2 times after dew drying. At the late stage of bulb expansion, planting lines should be cultivated to prevent the surface of the bulb from turning green and old. During the growth period, especially in the spring, attention should be paid to drought and flood prevention to prevent root rot.