May I ask what to do with the rotten roots of green onions?

Green onions are one of the high-yielding vegetables that is easy to cultivate. It is generally used as a side dish for seasoning. It is in high demand in the market.

Therefore, the cultivation of green onions is also common in China. In the process of planting green onions, farmers often encounter rotten roots, which seriously affects the planting efficiency. So what is the cause of rotten green onions?

How can it be prevented? Let's find out.

Causes of green onion root rot.

1., stagnant water roots.

During the growth of green onions, if flooded with water, it is easy to accumulate water, reduce the soil air permeability, and the root system of green onions cannot breathe, and it is easy to appear rotten roots, yellow leaves, and dead seedlings.

2. Improper use of herbicides.

Improper use of herbicides can cause pesticide damage, resulting in limited growth of green onions, yellow wilted leaves, and rotten roots.

3. Disease impact.

After many years of continuous cropping, there are many bacteria in the soil. Root rot, soft rot and other diseases will cause root rot of green onions.

4. Insect pest impact.

In addition to diseases, subterranean pests can also cause root rot. For example, root maggots can bite the roots of green onions, causing root rot.

How to grow green onions?

1. Scientific planting.

Avoid planting green onions in a row. Large and medium-sized arch sheds are best rotated with gramineous crops, cabbage and celery. In addition, when planting, keep the planted seedlings upright, not oblique, and pay attention to the planting depth, not too deep or too shallow.

2. Apply sufficient fertilizer.

Under fertilization conditions, the stress resistance and disease resistance of plants are weak, and they are easily invaded by bacteria. Generally, the fertilization of green onions should be mainly decomposed organic fertilizer, supplemented by chemical fertilizer, rational application of nitrogen fertilizer, and increase the application of phosphorus and potassium fertilizer. On the basis of applying foot fertilizer, it is necessary to reasonably top dressing, especially in the vigorous period of green onion growth, which is the most critical period for green onion production.

3. Reasonable watering.

The watering of green onions should be carried out flexibly according to weather conditions, soil dryness and wetness, and cultivation conditions. Temperatures are higher in summer and autumn. Watering at this time is mainly to promote root development. Except in unusually dry weather, try to minimize the amount of watering and drain well after rain to avoid water accumulation.

4. Weeding. In the long-term growth process of green onions, 3-4 times of tillage and soil culture should be carried out, which can break the soil compaction, increase soil permeability, and promote the root development of green onions. Weeding should also be combined with intercropping, and chemical weeding should be used as little as possible.

5.Pest control.

Before planting, disinfection and sterilization are carried out by deep ploughing and spraying of quicklime to reduce the base number of pests and diseases. In case of pests and diseases, apply pesticides in time to avoid expanding losses.

Generally speaking, there are many reasons why green onions are rotten, and you can find corresponding solutions according to the causes. However, as long as management is strengthened in normal times, the phenomenon of rotten roots can be avoided to a large extent.

Green onion root rot is generally a bacterial disease, at this time it needs to be treated with a special bactericidal drug, and it is also possible that too much water causes rotten roots, at this time it is necessary to drain too much water.

You can first rinse the rotten parts with clean water, dig out the bad soil and roots, and then add new nutrient soil, and this is it.

When we encounter this situation, first of all, when planting, we must choose the soil is more fertile and wide land, and we must use farmhouse fertilizer when fertilizing, do not use fertilizer bought outside, but also often water the plants, but also to prevent the occurrence of pests and diseases, if there is a situation of small insects, then we must spray insecticides in time.

At this time, the soil should be replaced as soon as possible, and then the soil should be sprayed with pesticides, so as to prevent the rotten roots of green onions, which are a kind of condiment.

At this time, it is necessary to dig out all the rotten parts, and then re-cultivate the soil and use nutrients, so that it will return to normal.

One, the soil moisture is too much. Two: there are pests and diseases.

There are many reasons for the rotten roots of green onions, mainly including: 1. Continuous cropping and heavy cropping. 2. There are maggots at the roots. 3. Pollution of water source for watering onions. 4. Herbicide damage. 5. Stagnant water roots.

You can look for the cause and treat the symptoms**.

1. If the crop is heavy, use the rotation method with other crops (note that it cannot be rotated with garlic and leeks of the lily family at the same time).

2. If the root maggot is harmful, use the method provided on the first floor to control it with insecticides such as phosphine granules and chlorpyrifos particles. 3. If the water source is polluted, then use clean water to water the ground. 4. If herbicides are harmful, choose safe herbicides to avoid pesticide damage.

There is no special way to strengthen water and fertilizer management and promote seedlings to be strong. 5. If the roots are soaked due to stagnant water, they need to be drained in time after the rain.

The tips for planting onions without rotting the roots are as follows:

If you want to plant onions without rotting roots, you can take the form of rotation planting, that is, rotate crops every three years to ensure that the nutrients in the soil are sufficient, and you can also choose loose soil and good drainage soil as the base soil when planting, and you can also strictly control the amount of watering in the process of maintenance to avoid water accumulation of plants.

The main reason for planting onion and rotten roots is heavy planting, which can be planted in rotation, generally once every three years, so as to avoid the phenomenon of rotten roots.

1. There are two main diseases that cause shallot root rot, one is soft rot and the other is black shin disease.

2. Soft rot is a bacterial disease, which is mainly infected from wounds and spread by irrigation in the field. The prevention and control should be treated with dry agricultural "root Shangya" root irrigation. At the same time, it is necessary to pay attention to the prevention and control of underground pests, and it is necessary to irrigate after irrigation, and irrigate after rain.

3. Black shin disease is caused by the fungus of the genus Stem Ponticos, which is mainly a soil-borne disease that overwinters in the field with diseased residues. Severe should be planted with non-cruciferous crops, along with the application of 10,000 crops of biofertilizer. The disease can also be spread by irrigation, so it should also be administered before irrigation.

The rotten roots of green onions are mainly caused by five reasons, and it is necessary to prescribe the right medicine to promote the healthy growth of green onions. Avoid continuous cropping and rotation with other crops; Provide clean water for watering, and water the right amount to prevent water accumulation in the roots; To do a good job in pest management, it is necessary to spray safe herbicides and chemicals in an appropriate amount to promote their strong growth.

Many people don't know what is going on with the rotten roots of green onions, but in fact, heavy cropping is one of the important reasons for their rotten roots. The planting of green onions in the soil is carried out one after another, and the soil is not disinfected and sterilized in time, resulting in a variety of pathogens, and the soil compaction is difficult to breathe, which is easy to lead to green onion root rot.

Therefore, it is necessary to do a good job of soil renovation and cultivation in time, so that the soil becomes soft, so that the roots of green onions can breathe well in the soil, so that it can grow healthily. It should also be noted that after sowing and harvesting, the soil should be sprayed with liquid to disinfect to prevent the breeding of bacteria from affecting the health of the green onion roots, and crop rotation should be carried out.

Green onions need to be watered in time during the growth process to ensure that they have sufficient water for growth. If the water quality of watering green onions is polluted, it will carry germs into the soil, so that the roots of green onions will begin to rot, so it is necessary to ensure that the watering water source is clean and hygienic.

In addition to the water quality mentioned above, overwatering can lead to water accumulation in the roots of green onions, which can also lead to root rot. In the process of daily maintenance of green onions, it is necessary to water in an appropriate amount to keep the soil moist, generally need to be watered every day, and pay attention to drainage in the rainy season.

When the root of the green onion suffers from root rot, anthracnose and other diseases or root maggot and other insect pests, it will also cause the root rot of the green onion, and the prevention and control of pests and diseases should be carried out in time. Phosphine particles can be sprayed to kill root maggots, and carbendazim solution should be sprayed in time for sterilization and disinfection for diseases.

Weeds often grow next to green onions, and many people choose to spray herbicides in order to prevent the nutrients and moisture of green onions from being consumed. However, if the medicinal ingredients of the herbicide are too large and too concentrated, it will lead to pesticide damage and rot the roots of green onions. It is necessary to choose a safe herbicide, and water and dilute the solution in time after the pesticide damage occurs to make it thrive.