How to grow green onions to get higher yields?

Green onion is a vegetable with strong cold resistance and is suitable for planting in a variety of climatic conditions. In some high-altitude areas, the large temperature difference between day and night is conducive to the growth and nutrient accumulation of green onions. So how can we plant green onions to get higher yields?

1. Seed selection

When choosing green onion seeds , you should select varieties with strong adversity adaptability and disease resistance to adapt to the local environment. Before introducing new varieties, it is recommended to conduct small-scale trial planting first, and then gradually expand the planting scale after success.

2. Planting time

The sowing time should be determined according to local climatic conditions. In some areas in the north, three crops of green onions can be planted in a year. Summer and autumn onions should start seedling raising in early March and be transplanted in May-June; autumn and winter onions should start seedling raising in late June and be transplanted in September; winter and spring onions should start seedling raising in September and be transplanted in March of the following year.

3. Seedling planting

When raising seedlings, avoid using soil that has been used to grow onion and garlic crops to prevent continuous cropping problems. Before sowing, apply fully decomposed farmyard manure as base fertilizer, then deep plow the soil, break up clods, level the land, and make beds of appropriate width and length in preparation for sowing.

Sow seedlings according to the soil moisture. If the soil moisture is appropriate, spread the seeds evenly and cover with 0.5 cm thick soil. If the soil is dry, water it first, then sow, and finally cover with plastic film.

During the seedling stage, the growth of the onion seedlings needs to be checked regularly to keep the soil moderately moist. If the onion seedlings grow weakly or the soil is dry, water and fertilizer should be added in time. If the onion seedlings are too dense, thinning is necessary to remove weak seedlings and promote the growth of strong seedlings.

Under suitable climatic conditions, when the onion seedlings reach an appropriate size, they should be transplanted and planted, following the principles of land preparation, trenching, watering and fertilizing, watering and seedling removal, and graded transplanting.

4. Water and fertilizer management

In terms of water and fertilizer management, watering of green onions should be carried out according to actual conditions to avoid blind irrigation. In the early stage of transplanting, if the soil is dry, water it in time; if the soil is moist, there is no need to water it, just do a good job of storing water and conserving moisture. The frequency of watering in the later stage of management should be determined based on rainfall conditions and the growth conditions of green onions. If there is too much rainfall, drainage is required in time; if there is insufficient rainfall, irrigation should be carried out in time.

In terms of fertilization, green onions should pay attention to the use of base fertilizer and apply top dressing as needed. Before transplanting, apply well-rotted farmyard manure as base fertilizer, generally 2500-4000 kg per mu, and 30-50 kg of compound fertilizer . The specific amount of fertilizer should be flexibly adjusted according to soil fertility.

One and a half months after planting, when the organic fertilizer in the soil is consumed, the onions enter a new growth stage and need topdressing to supplement nutrients. Top dressing should follow the principle of light at the beginning, heavy in the middle, and supplementary at the end.

Fertilizer can be nitrogen-potassium compound fertilizer, with an application rate of 20-30 kg per mu. Water in time after application to promote the absorption of fertilizer by green onions and avoid waste.

5. Soil cultivation

While watering and fertilizing, it is also necessary to add soil according to the situation. In the early stage of soil addition, the soil should be kept loose to avoid seedling death; in the later stage, the soil can be appropriately compacted to fix the onions. The number of times of soil cultivation should be determined based on factors such as sowing time, onion growth conditions, temperature and precipitation.

6. Pest and disease control

In terms of pest and disease management, green onions are susceptible to diseases such as downy mildew, soft rot, yellow dwarf disease, purple spot disease, and pests such as onion thrips and beet leaf moth. Different pests and diseases require different prevention and control measures, but pest and disease management cannot be ignored.

If the yield of green onions drops sharply during the growth period, it may lead to diseases and insect pests, affecting economic income. Therefore, during the planting process, the following three points should be done well: prevent and manage pests and diseases, inhibit the development of pests and diseases, and avoid the expansion of problems to protect the yield and quality of green onions.

First, prevention is key. By clearing weeds in the onion garden, watering and fertilizing properly, the onion's resistance to diseases and pests can be improved. Second, conduct regular inspections. Check the scallion fields regularly. Once a disease is found, identify it promptly and take measures to prevent the disease from spreading. Finally, comprehensive prevention and control. Although chemical control is effective quickly, it has great side effects. We should gradually pay attention to the combination of agricultural control, physical control, biological control and chemical control to grow healthy and pollution-free onions.

7. Scientific harvesting

In terms of harvesting management, green onions can be harvested when the length of the white part exceeds 30 cm and the thickness of the stem reaches about 2 cm. When harvesting, you should be gentle to avoid damaging the stems and leaves of the onions and affecting their quality. After harvesting, green onions should be graded and bundled according to quality to avoid random stacking. In rainy weather, good ventilation management should be ensured to prevent the pile from heating up and the onions from rotting.

Before harvesting green onions, we should pay attention to market changes, establish online and offline sales channels, attach importance to the maintenance of large customer groups, and avoid unsalable green onions.

In short, to achieve high yield and high quality of green onions, we need to start with details and manage comprehensively. Any small oversight may lead to failure. At the same time, the sales of green onions are also very important. Even if the product quality is high, it will be of no avail if the sales are poor.