March to April seedlings, May to June planting, October to December harvest. This crop of onions requires varieties with fast growth, heat and rain resistance, and high yields, and can be selected from Pu Wei Star No. 3, No. 4, Ming Hui and New Champion. Generally speaking, this crop does not choose small-leafed varieties. seedlings in May to September, planting in September to November, harvested in May to July of the following year. This crop requires onion varieties resistant to shooting, disease resistance, high yield, can delay the harvest, so Pu Wei long summer, spring to get a late pumping, the famous late pumping is the best varieties.