洋葱(俗称圆葱、葱头等)在我国分布很广,各地均有栽培。目前,我国洋葱的种植面积在33.3万hm2(500万亩)左右,总产量有800～1000万t,是世界上洋葱产量最大的国家,并且每年的种植面积还在不断扩大。江苏省徐州市的丰县、沛县洋葱年种植面积约2万hm2(30万亩),年产量100余万t,产值7亿元左右。目前, Onions (commonly known as onions, onion, etc.) are widely distributed in our country and are cultivated all over the country. At present, the planting area of ​​onion in our country is about 333,000 hm2 (5 million mu), and the total output is 800-10 million tons. It is the country with the largest onion production in the world, and the annual acreage is still expanding. Fengxian County, Xuzhou City, Jiangsu Province, Peixian onion planting area of ​​about 20,000 hm2 (300,000 mu), the annual output of 100 million t, the output value of 700 million yuan. Currently,