Factors affecting the yield of scallions

Green onion is a very popular side dish in our life. It is welcomed by many people, so now there are a lot of people growing green onions. The planting technology of green onion is relatively simple, and the yield is also relatively high, but in the planting process, it is easy to have some problems that affect the yield of green onion. So what factors will affect the yield of green onions? The following editor will give you a brief introduction, let's have a look!

1. Soil

Soil is very important to the growth of Welsh onion, and now the soil in some main producing areas of Welsh onion is saline-alkali soil. There is usually salt in the surface layer of saline-alkali soil. The permeability of this kind of soil is very poor, if green onions grow on this soil, it will affect the nutrient absorption of green onions, which is very disadvantageous to the growth of green onions. And in serious cases, it will lead to rot and death at the roots of green onions. In order to reduce the yield of green onions, so if you want to increase the yield of green onions, we must first pay attention to the choice of soil.

2. Continuous cropping

Green onions can not be continuous cropping, if green onions are planted repeatedly, then green onions are very easy to produce soil-borne diseases. And the disease sources in the soil will accumulate more and more, resulting in serious damage to diseases and insect pests such as green onion virus disease, purple spot disease and onion maggots. And because green onions have the growth characteristics of selective absorption. If continuous cropping for a long time, it will not only reduce the growth ability of green onions, but also change the physiological properties of the planting soil, which has a great impact on the growth of green onions, resulting in a decline in yield and quality. therefore, the planting of green onions should be rotated for at least two years.

3. Fertilization

If you want to increase the yield of green onions, then fertilization work is very important. However, if the base fertilizer and topdressing are unreasonable when applying fertilizer, it will be very disadvantageous to the growth of green onions. For example, if you apply too much nitrogen fertilizer, it will not only lead to the overgrowth of green onions, but also lead to nutritional imbalance in the growth of green onions. Do not apply phosphate fertilizer, if the soil phosphorus content is too large, it is easy to cause soil consolidation, reduce soil permeability and so on. And it will also affect the root absorption of other nutrients, such as potassium, iron, etc., and have a direct impact on the yield of green onions.

4. Diseases and insect pests

No matter what crops are planted, the prevention and control of diseases and insect pests is essential. Naturally, green onions are no exception. When planting green onions, we must pay attention to the prevention and control of diseases and insect pests. If the control is not proper, the spread of diseases and insect pests is too fast. It will not only increase the cost of pest control, but also affect the control work in the later stage. The yield and quality of green onions will also be significantly affected, so we should often observe the growth of green onions and timely symptomatic treatment after finding symptoms of diseases and insect pests.

The above is a brief introduction of the reasons that affect the yield of green onions. That's all for today's introduction. This article is for reference only. I hope it can help you all.