It can be seen from the growth habits of green onions that green onions like cool growth environment. The most suitable planting time of natural green onions is spring and autumn, especially autumn, and the cool climate is more suitable for the growth of green onions. In spring, the planting time of green onions is generally in March-April every year. Autumn planting time is between September and 10 every year. In this way, what people call "Bailu Onion" refers to the green onions planted before and after the Bailu solar term.

Before transplanting, the soil should be ploughed and fertilized, and the ploughing depth should be controlled at about 25 cm. According to soil fertility, 3000 ~ 4000 kg of decomposed organic fertilizer is applied per mu, and the compound fertilizer is applied in combination with about 15 kg. The plant spacing is controlled at about 6 cm, and the row spacing is 50 cm.

Planting and management of onion

Onions adapt to a wide range of temperatures, preferring cool to hot. The optimum temperature range for onion growth is 13-25℃. When the temperature is higher than 25℃, the growth of onion is slow, which affects the quality of onion leaves. When the temperature is right, your onion seeds can be sown ~ When sowing, level the soil, pour water on it, spread the seeds evenly after the water seeps down, and cover them with a sieve with a thickness of 0.5 cm.

The root system will grow faster after development. The onion can be properly watered in the early stage, and the water should not be too big, which may easily lead to excessive growth and lodging. It can be transplanted when it grows to 65,438+05-20 cm, and the best time for transplanting is in the evening. Before transplanting, it should be watered for 65,438+0-2 hours, and more original soil should be watered when digging out. After transplanting, water should be poured once, and the water must keep up, and the seedlings should be delayed for 3-5 hours. The onion spacing depends on the actual variety.