White dew or cold dew?

White dew seed onion, white dew onion has strict requirements on sowing date, generally sowing between white dew and autumn equinox. Sowing too late, the onion seedlings are weak, and it is easy to die in winter. After turning green in the second year, the growth and development are slow, which affects the yield. Sowing too early, bolting and sowing the next spring is not suitable for planting onions.

The suitable sowing time is 60-70 days before the onion stops growing, and the onion seedlings grow to two leaves and then thaw. The planting time of Bailu onion varies from region to region. In the north, sowing is generally carried out in late August, and early September is suitable for seedling emergence. Leek, leek and garlic, no meeting. Green onions should not be planted again, but should be planted in plots where green onions, leeks and garlic have not been planted for 3-4 years. Wheat, corn, potatoes and other crops are good previous crops, and sandy loam or loam is good.

The purpose of planting Bailu onion with frozen water is to prevent seedling death caused by freezing injury and drought. Before and after the light snow, that is, when it freezes during the day and freezes again at night, frozen water is poured to raise the ground temperature and ensure the safe overwintering of seedlings. Conditional farmers should set up windbreak walls to help the seedlings turn green in the next spring. The whole growth period of Bailu onion is long. As long as it is well controlled and comprehensive high-yield cultivation techniques are applied, the purpose of high yield, high quality and high benefit can be achieved.