Planting method of onion

Open field cultivation: sowing in early April, harvesting in early June and harvesting in July. Summer onion is planted in the middle and late June, and shading nets can be used to cultivate or interplant tall crops in summer with high temperature. Harvest in mid-August, and enter the harvest period in September, with good quality and high price.

Planting winter onion after 10 (10) can avoid the high temperature and rain before the Mid-Autumn Festival, prevent onion seedlings from overgrowth and reduce stress resistance. Leek should not be planted continuously for many years, nor should it be mixed with other onions and garlic. Generally, it should be rotated with vegetable crops such as soybeans and corn for 2-3 years.

Extended data

Onion belongs to Allium of Liliaceae, and is also known as chive, onion, fire onion, four-season onion and polished rice onion. The upper part is onion leaves, and the lower part is white onion. Originally from Siberia, China has a long history of cultivation and is widely distributed, with Shandong, Hebei, Henan and other provinces as important producing areas.

Onion is an important condiment. Edible parts are onion leaves, onion white and onion whiskers, which can be eaten fresh and fried, or processed into dried onions and crispy onions. Onion has many dietotherapy and therapeutic functions, and it is also a health-care medicinal vegetable.

Moreover, chives are cold-resistant and fertilizer-tolerant, and have wide adaptability to soil, but their heat and drought resistance are weak. The vegetative growth period is suitable for cool climate conditions, the optimum temperature for germination is 13~ 20℃, the optimum temperature for stem and leaf growth is 18~23℃, and the optimum temperature for root growth is 14~ 18℃, and the growth rate is slow above 28℃.

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