How to grow white onion seeds?

Onion is a condiment that we often use in our lives. It has many effects in diet therapy and treatment. It is also a kind of health medicinal vegetable. White onion seeds are onion seeds, so do you know how to plant white onion seeds?

1. Soil preparation

Scallion suitable for flat land, fertile, close to water sources, drainage convenient plot growth, so when choosing land as far as possible to choose drainage convenient fertile soil planting. After selecting the land, the soil should be deeply ploughed, and 50 kg compound fertilizer should be applied per mu as base fertilizer, 2.5 kg furandan and 0.5 kg carbendazim powder to kill underground pests and germs.

2. Sowing

Remove the cover from the border and irrigate the border with sufficient water until the water has seeped out. The white onion seeds are mixed with sand, sprinkled twice in the border, and finally covered with soil. The thickness of the soil is 1.5~2 cm. The seed amount of the seedling field is 1.3 kg, and it can be transplanted to 3~5 mu.

3. Planting

Summer sown scallion in the middle of September, autumn sown scallion in March to April next year planting. According to row spacing 80 cm, plant spacing 1.5~2 cm, trenching planting. Before planting, onion seedlings should be graded strictly, and then treated with chemicals to eliminate root maggots and ensure complete seedlings.

4. Field management

Watering: the management center after green onion planting is to promote roots, should control watering, drainage after rain to prevent waterlogging, prevent rotten roots, yellow leaves and dead seedlings. After transplanting, such as continuous rain will lead to rotten roots and dead seedlings, pay attention to timely drainage. In case of high temperature and drought, water should be watered to cool down.

Topdressing: after the beginning of autumn, topdressing "leaf fertilizer", 1500~2000 kg of decomposed farm manure and 20~25 kg of calcium superphosphate per mu. After white dew, combine watering and topdressing "attack fertilizer" twice, apply urea 15~ 20kg and potassium sulfate 10~ 15kg per mu each time.

Cultivation: Cultivation is an important measure to soften leaf sheath, prevent lodging and improve yield and quality of onion. From the beginning of autumn festival to harvest, generally cultivate soil three times, the first two times combined with cultivation, the ridge soil will be blocked into the onion ditch, after the summer will be filled.

During the sowing process of white onion seeds, attention should be paid to planting in loose, fertile and convenient drainage loam and heavy loam plots, not suitable for planting in sandy soil plots, balanced supply of nitrogen, phosphorus, potassium and trace elements, and no single application of nitrogen fertilizer.