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What foods are there with foreign languages?
Onion, also known as onion, onion, jade onion and onion head, is a biennial herb of Allium in Liliaceae.
There are different opinions about the origin of onions, but most people think that onions are more likely to be produced in the Central Asian Plateau in Southwest Asia, Iran and Afghanistan in Asia Minor, because wild onions can still be found in these areas.
Onion growing environment
Onion originated in continental climate zone, where the climate changes dramatically, the air is dry and the soil moisture changes obviously seasonally. Therefore, in the process of phylogeny, onion not only changed morphologically due to long-term adaptation to this special environment.
Short stems, wet roots, drought-tolerant leaves and bulbs with storage function also have certain physiological adaptability.
In the vegetative growth period, it is required that the temperature is cool, the light intensity is moderate, the soil is loose and fertile, the water retention is strong, the air humidity is low, and the soil humidity is high, showing the characteristics of cold resistance, moisture resistance and fertilizer resistance, but not high temperature resistance, strong light resistance, drought resistance and barren resistance. When the temperature is high and the sunshine is long, it will enter the dormant period.
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