When is the best time to plant white dew onions?

White dew onions have strict requirements on sowing date, and are generally sown between the white dew and the autumnal equinox. When sowing too late, onion seedlings are weak and easy to die in winter, and grow slowly after turning green in the second year, which affects their maturity and yield. Sowing too early, pulling weeds and sowing in the next spring is not suitable for planting onions. As the saying goes, "white dew onion" refers to the green onions planted in autumn. The best time to plant green onions in autumn is during the solar term of Bailu, that is, the solar term from Bailu to autumnal equinox.

How to grow white dew onions There are many varieties of onions. Good varieties can be determined, excellent onion seeds can be selected, and full, full, healthy and pest-free seeds can be selected. Onion seeds should germinate before planting. Soak onion seeds in warm water at 55℃ and stir while soaking, so that the onion seeds absorb water and soften the skin. Choose a good plot for planting, not a plot of continuous cropping, but a plot where green onions, leeks and garlic have not been planted for 3-4 years, and it is required to be in the lee of the sun, with convenient drainage, loose soil and abundant ventilation. Pay attention to sowing density and sowing depth when sowing, and adopt furrow sowing method, and the sowing depth is recommended to be between 3-5cm.

The emergence time of white dew onions is relatively slow in a few days, so be patient. It usually takes about two weeks to germinate. When planting, we must pay attention to the time, which requires higher climate. It usually takes place between the Millennium and the autumnal equinox. In Northeast China and Inner Mongolia, seeds were sown between summer and Millennium, and emerged in Millennium. North Hebei and Tongliao are generally sown with Millennium solar terms; Sowing in the north and south of Hebei, Shandong, Henan and southwest, between the Millennium and the autumnal equinox.

How to water the white dew onion after emergence? After sowing, the temperature should be stabilized at about 17 degrees, and the water should be properly watered during the maintenance period. Keeping the soil moist is conducive to the germination of Chinese onion seeds. Flexible watering, watering can be carried out according to the principle of alternating dry and wet soil. The best watering methods are small water irrigation, spray drip irrigation and alternate watering with ridges. After each watering, we should pay attention to hoeing the soil in time to promote the evaporation of excess water.