First, planting time

Onions are mostly planted by sowing, and the planting time is generally concentrated in the early September of autumn. At this time, the ambient temperature is suitable, which is beneficial to the later growth of onion.

Second, prepare seeds.

Before planting onions, choose high-quality and full seeds. In order to improve the germination rate of seeds, it is best to accelerate germination or sow directly. First, soak the seeds in warm water to absorb water, then air them for a short time, wrap them in moist gauze, put them in a warm place to accelerate germination, keep the temperature at about 25℃, and sow after most seeds turn white.

Third, land preparation and border preparation.

Choose sunny, leeward, convenient irrigation and drainage plots for border fertilization. The height of the frame is about 1.5- 1.6 m, and the width is about 28 cm. Loosen the seedlings and apply decomposed base fertilizer.

Fourth, sow correctly.

Fill the border with enough water, spread the seeds evenly, cover them with a centimeter of thin soil, cover them with plastic film after sowing, keep the temperature and humidity at about 20 degrees, and germinate for about a week. After the onion germinates and emerges, we should do a good job in seedling management, interplanting and replanting in time to promote the growth of onion seedlings.

Verb (abbreviation of verb) Tian Tuan management

After the onion seedlings grow stably, they can be well managed in the field. During the growth of seedlings, there should be no shortage of water and too much watering. It is necessary to keep the soil moist, avoid seedling wilting and promote the rapid growth of seedling roots. Control pests and diseases. Common diseases of onion include rust, purple spot and downy mildew.