Onion cultivation method

Planting sites should be planted in places with sunny, fertile and loose soil, which require good soil permeability and good ability of water and fertilizer conservation. Soil preparation: fine the soil, plough it and expose it to the sun, and then apply base fertilizer. Rational fertilization: after the application of base fertilizer, wait until the seedlings grow for topdressing, mainly nitrogen fertilizer. Sowing: sowing in the middle of September, after emergence, select high-quality seedlings to plant. Post-stage management: actively prevent and control diseases and insect pests and water them appropriately.

I. selection of planting sites

Onions do not have high requirements for soil and can grow normally in any soil, but the root absorption capacity of onions is not very good, so they should be planted in places where the soil is loose and fertile. Its soil requires good water and fertilizer conservation capacity and good permeability, which is more conducive to promote root growth and development, so that it can grow better. Onions need plenty of light in their growth, and it is best to plant them in areas where they have been exposed to the sun for a long time.

II. Land preparation

The main results are as follows: 1. After selecting the planting land, the soil preparation can be carried out according to the soil permeability and fertilizer and water conditions, and the soil can be refined first, which can improve the permeability of the planting land.

2. Then ploughing the soil, do not flatten it immediately and let it be exposed to the sun for a week or so, which will help to eliminate bacteria and parasites in the soil and play a role in disinfection.

3. Finally, base fertilizer can be applied in the planting land, and the soil and fertilizer can be mixed evenly, which is beneficial to improve the soil fertility and promote the growth of seedlings.

III. Rational fertilization

Soil preparation and application of base fertilizer can be carried out together, according to the specific planting area to determine the amount of base fertilizer, the general base fertilizer is mainly fully mature farm fertilizer, can be matched with a small amount of phosphorus, potassium, calcium and other nutrient elements. When onions grow out of seedlings, fertilizer can be applied once, mainly nitrogen fertilizer, which is beneficial to improve the growth rate of seedlings.

Fourth, sowing seeds

1. Sowing at a suitable time is beneficial to the normal growth of seedlings, but improper sowing time will affect the growth of onions, resulting in a decrease in yield and quality.

2. The sowing time in the south is the middle of September. According to the emergence rate of onion, the reasonable sowing density should be carried out in time after the seedlings are unearthed.

3. Cover the nutritive soil around 2cm after sowing, so as to ensure the whole seedling.

4. After the seedlings are completely unearthed, transplanting can be carried out. First, the seedlings with excessive growth, weak growth and prosperous growth are picked out and removed, and the seedlings with uniform specifications are planted together, which is beneficial to the later management.

V. late-stage management

After the seedlings are planted, the late management should be strengthened to prevent and control diseases and insect pests in time. The planting time of onions is basically in autumn, and the temperature in that season is low, so it is not suitable to irrigate too much water. Excessive watering will reduce the surface temperature, thus affecting the growth rate of seedlings. Timely and appropriate watering is more conducive to the growth of seedlings.