Summer: Summer onions can be planted from mid-May to mid-June. In summer, shading nets can be used to cultivate or interplant tall crops at high temperature. Harvest began in mid-August and reached its peak in September. The quality is good and the price is high at this time. Onions are mainly edible tender leaves and scallions, which are rich in nutrition and can remove fishy smell and taste. Not only that, but also the effect of strengthening stomach and sweating. Onion has strong adaptability, short growth cycle and strong tillering ability, and can be tillered and transplanted many times, which is very beneficial to repeated planting.
The planting time of shallots is generally from February to March every year. If it is in the Yangtze River valley, the planting time is usually in March-April due to the different climate. Harvest from June to July, and autumn is also a good time to sow. When planting shallots, the best-selling varieties should be selected first. Generally, the seeds should be sown in late March, then the seeds should be soaked in warm water for 3-4 hours, disinfected with carbendazim solution, and then placed on a clean wet cloth at a temperature of about 15 degrees.
Onion needs long sunshine, and most of the time the sunshine hours exceed 13 hours to meet its growth, but now it has also cultivated moderate sunshine varieties. Another method is to insert shallots, first level the ground, pour water through it, and insert the shallots directly into the soil, so that the planted shallots can be pulled up and eaten in a short time, which is very convenient.
The depth of onion is not suitable for planting too deep. When the bulbs are slightly exposed from the soil surface, water them again, and the surviving shallots can be managed normally. We'd better use fresh seeds when planting, that is, Liuhe shallot, Gunlei shallot and Yunnan shallot. For selling fresh-cultivated Yunnan shallots, Bulei varieties are mainly selected from late March to July, strong Yunnan shallots are selected from August to September, and Liuhe shallots are selected from September to 65438+ 10 of the following year. Don't fill the soil too full, scrape the pot soil with a small stick, and scatter the shallot seeds evenly on the pot soil, not too dense so as not to grow out after seedling emergence. Now put a small sieve on the garden soil and sift the onion seeds gently until the seeds are out of sight. About 5 mm is enough.