When planting green onions, there is a phenomenon of rotten roots, how to prevent it?

If there is a wound on the root of the green onion, the root rot fungus will "take the opportunity" to invade the root of the green onion, so that the green onion is susceptible. Under normal circumstances, if the humidity in the field is too high and the temperature is suitable, the root rot fungus will develop rapidly, especially because we have been relatively stable in recent years, so the planting area of green onions is increasing year by year. For the subject said that the green onion in the growth and development period of the root rot phenomenon, can be considered from these four aspects of heavy planting, this kind of crops for nutrient demand bias, long-term will cause some nutrient deficiency, coupled with unreasonable fertilization and field management, the result is a series of problems such as soil compaction, acidification, etc., that is, what we call heavy stubble obstacles or continuous cropping obstacles.

<> the causes of the problem of root rot in green onion are different, for example, the possibility of stagnant water root in the southern region will be greater, and the possibility of maggots in the field with too much farm manure is greater, and the prevention and control of green onion root rot problem should take symptomatic measures, and the wrong choice of measures is likely to have a negative impact. The seedling stage should be watered too much, because green onions belong to shallow root crops, too much water will inhibit the respiration of the root system, aerobic respiration to anaerobic respiration, will cause root rot.

Some dishes do not have green onions, so there is a big difference in appearance and taste, so every household in the countryside will grow more or less green onions. Recently, many farmers have responded that green onions are prone to root rot in the process of planting, and many crops are known to be replanted once planted, there will be problems, due to soil compaction, etc., there are often a lot of pathogenic bacteria breeding in the soil, which corrode the roots of green onions, and there is a rotten root situation. Heavy stubble is the key factor causing the root rot of green onions, due to the continuous planting for many years, the increase of pathogenic bacteria in the soil, heavy stubble disease is inevitable, it is easy to cause the root rot of green onions.

If the soil moisture is too large during soil cultivation, it will affect the normal respiration of the roots, reduce the resistance of the plant itself, and thus aggravate the occurrence of diseases.

If there is a rotten root phenomenon when planting green onions, first of all, we should keep the soil not too moist and dry when we start planting green onions, and then we can't apply too much fertilizer when we start planting.

Proper crop rotation is one of the most effective ways to reduce root rot in green onions. When planting green onions, there is a phenomenon of rotten roots, which can be fertilized, potassium or nitrogen.

1.Root rot.

When cultivating green onions, 58% methasol can be used. 600-800 times of manganese zinc for root irrigation; If the diseased plant is found, the root can be irrigated three times continuously with 96% 3000 times of the solution.

2.Soft rot.

Before planting green onions, quicklime can be sprinkled in the green onion field according to the amount of 50 kilograms, or 2 kilograms of Dixon can be used for soil disinfection. When the onion is found to be diseased, the root can be sprayed with 500 times of 77% killable wettable powder, and under normal circumstances, it needs to be sprayed 2-3 times continuously.

3.Roots.

Choose a plot of land with high and dry terrain to plant green onions. If you encounter rainy weather, you must drain the stagnant water in the field in time, and after the weather clears, you must loosen the soil in time to increase the air permeability of the soil.

4.Root maggots are harmful.

Before transplanting green onion seedlings, 50% phosphine 800 times solution can be used to dip the roots, and the dipping time is about 30 minutes. It is then left to dry before transplanting.

If root maggot damage has occurred, 2-3 times of root irrigation can be carried out with 4000-5000 times of 25% pyrethrin.

There are several reasons for the phenomenon of rotten roots of green onions, one is that the root rot of green onions causes rotten roots, which causes rotten roots of green onions, and the second is that root maggot pests will form wormholes in the roots of green onions, which leads to rotten roots, and third, green onions will produce roots, which will cause rotten roots, these reasons are the main reasons for rotten roots of green onions, and they are also high-frequency symptoms of rotten roots of green onions, therefore, we need to take measures to deal with these rotten root behaviors, so as to make green onions grow better.

For the different rotten root behaviors of green onions, we must take corresponding measures to deal with these rotten roots, first of all, if it is root rot caused by root rot, we can use methyl frost manganese zinc liquid or frost urea cyanide solution to water the roots, and then seal it with soil, after a period of time, the medicine will take effect, and after the effect, it will be the best rotten roots, and secondly, if the root maggots cause rotten roots, you can smear the roots with phoxanthion solution and methyl isomeron solution, which can quickly eliminate the root maggots and protect the green onions. Finally, if there is a root soaking behavior, it is necessary to loosen the soil in time, prohibit large water irrigation, increase soil permeability, and then manage it normally.

Usually when cultivating green onions, you can do some anti-rotten root behaviors in advance, such as choosing the soil to choose the permeable soil, and add some nutrient fertilizers, so as to ensure that the green onions grow when the nutrients are sufficient, the water is sufficient, so that you can avoid a lot of rotten root behaviors, the cultivated green onions should be regularly added with water, adding water can make the green onions have sufficient moisture, grow more powerful, look fresher, more beautiful, and taste better, therefore, it is necessary to prevent and control the green onions in time.

If the green onion appears after the root rot phenomenon, we should take measures to treat it in time, we can add some liquid drugs to prevent and control the root rot, which is the most direct and effective way, you can also often go to loosen the soil to ensure the nutrients of the green onion, and it can also be used to prevent and control some root rot phenomenon, therefore, different measures need to be taken for different root rotten behaviors.

The rotten roots of green onions are mainly caused by the following reasons, the first is the problem of soil; second, there are pests and diseases; The third is improper field management. In fact, if you carefully observe the symptoms, you can still find the cause of the disease and the solution.

The appearance of rotten roots is mainly caused by the bite of pests, and the main way to prevent it is to master the planting time.

In recent years, the green onion is relatively stable, the yield of green onions is higher, the planting income is not bad, farmers plant green onions a lot of farmer friends, recently, there are many farmer friends private messages, reflecting their green onions planted this year, different degrees of rotten root phenomenon. I don't know what causes it, how to prevent it? Below, I will introduce the reasons for the rotten roots of green onions to you as follows, I hope it will be helpful to you.

Friends who grow vegetables should know that most vegetables are afraid of heavy stubble, green onions are no exception, the key reason for the root rot of green onions is mostly related to heavy stubble, due to continuous planting for many years, the increase of pathogenic bacteria in the soil, it is easy to cause the root of green onions to rot and die.

Therefore, in order to effectively solve the problem of rotten roots of green onions, the conditional implementation of stubble planting, generally once every three years can be rotated. In addition, there are three other factors that can also cause green onions to rot the roots.

The root rot of green onions is due to the fact that the plant is infected with root rot, especially if it is planted in heavy crops, and the pathogenic bacteria in the soil increase, which is more susceptible to this symptom. The root rot prevention of green onions is very easy, but it is very difficult, generally before planting, it is necessary to disinfect and sterilize, and after getting sick, you can try it with pesticides to irrigate the roots.

First, the cause of rotten roots.

The main reason for root rot is root rot. Most of the plants affected by root rot are planted in heavy stubble, and the land where crops are planted for many years has not been sterilized and disinfected, if the drainage is not smooth in rainy days or the breathability and drainage performance of the soil is affected, the external environment faced by the roots is relatively poor, the antibacterial ability is weak, and it is easy to be infected.

Second, the solution.

The green onion seedlings are buried deep when they are planted, and the roots are rooted in the soil after growth, and it is very difficult to irrigate after getting sick, and the effect is not good afterwards, so prevention in advance is the right solution.

Before planting, the land should be sterilized and disinfected, and the biological fertilizer can be diluted with water and poured in the soil, which can effectively prevent and control the spread of germs; Fungicidal pesticides can also be used in the field ditch, such as fungine and so on. After sterilization, you can plant and cultivate soil, if you find rotten roots in planting, you should dig out the diseased plants, carry out irrigation treatment, and then apply rooting agent to replant.

If such a phenomenon occurs, then it may be because of the virus in the green onion, so if you want this phenomenon, hurry up, and go to the market to buy the corresponding medicine to fight.

The main reason for root rot is root rot. Most of the plants affected by root rot are planted in heavy stubble, and the land where crops are planted for many years has not been sterilized and disinfected, if the drainage is not smooth in rainy days or the breathability and drainage performance of the soil is affected, the external environment faced by the roots is relatively poor, the antibacterial ability is weak, and it is easy to be infected.

It may be due to too much water, or not doing a good job of drainage, or it may be due to insect infestation, which can lead to root rot.

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

There are many farmers who are growing green onions because the yield of green onions is relatively high. Moreover, it is relatively stable, and the income from planting green onions is also good. But when planting green onions, many people react that green onions will have rotten roots.

This will affect the quality and yield of green onions, and the economic benefits of growing green onions will be reduced. In fact, there are many reasons for the rotten roots of green onions, such as rotten roots caused by stagnant water, because green onions need to be watered frequently, so as to ensure the normal growth of green onions.

When planting green onions, we should also pay attention to choosing suitable varieties, because this is related to the yield and growth quality of green onions. When planting green onions, it is also necessary to plant scientifically, if the planting is not good, it will be easy to rot roots or other problems. Therefore, the green onions should be planted upright, and the green onions should not be tilted.

It is also necessary to water the green onions frequently when they are growing, but the amount of watering should also be determined according to the weather and soil, and if it rains, you should also pay attention to drainage.

Too much water, green onions are drought tolerant and not waterlogged, although green onions need more water in the later stage of rapid growth and development, but there is no stagnant water, especially harmful sewage, which has a greater impact on green onions, and the time is that the root system is slightly waterlogged, and the root system of green onions is not well breathed, resulting in a decrease in disease resistance, resulting in various diseases of green onions. Root rot is one of them. Combined with chemical control, a small amount of quicklime can be applied to acidified soil to improve soil pH.

At the same time, the aqueous solution of quicklime has a bactericidal effect. During the growth period of green onions, the whole plant can be sprayed with 300 times of liquid ethyl phosphoaluminum-manganese-zinc + brassinolide, and at the same time, rinse the manganese-zinc or ethyl phosphoaluminum-manganese-zinc with water when watering. 1 2 kg per mu.

Scientific planting is the basis for preventing green onions from rotting roots, if the planting is not reasonable, green onions are prone to rotten roots in the growth, and there will be many problems. When planting seedlings, it is necessary to first lay a good planting cave, and then use an upright way to plant, can not be planted obliquely, and at the same time the roots can not be too deep or too shallow, otherwise the roots will be poorly developed, not only the growth is very slow, but also easy to rot the roots.

The green onion has rotten roots, and it is necessary to have a target to promote the healthy growth of the green onion. Prevent heavy crop rotation and stop crop rotation with other crops; Provide it with clean water to stop watering, and water an appropriate amount to avoid water accumulation in the roots; To do a good job in pest management, it is necessary to spray safe herbicide solutions in an appropriate amount to promote their healthy growth.

1. Heavy crop rotation.

Many people don't know what is going on with the rotten roots of green onions, but in fact, heavy crop rotation is one of the important reasons for the formation of rotten roots. Stopping the planting of green onions in the soil one after another, and not stopping the disinfection and sterilization of the soil in time, resulting in a variety of germs, and the soil compaction is difficult to breathe, which is easy to cause green onion rot. Therefore, it is necessary to do a good job in the innovative cultivation of the soil in time, make the soil soft, so that the roots of the green onion can breathe well in the soil, so that it can grow healthily.

It is also necessary to pay attention to the fact that after sowing and harvesting, the soil should be sprayed and disinfected to avoid the breeding of bacteria and affect the health of the green onion roots, and the rotation planting should be stopped.

2. Water pollution.

During the growth process, green onions need to be watered in time to ensure that they have sufficient water to stop growing. 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.

3. Stagnant water roots.

In addition to the water quality mentioned above, excessive watering will cause water accumulation in the roots of green onions, and it will also cause them to show root rot. In the process of daily maintenance of green onions, it is necessary to stop watering in an appropriate amount, insist on soil moisture, ordinary needs to water every day, and pay attention to drainage in the rainy season.

4. The impact of pests and diseases.

When the roots of green onions are subjected to root rot, anthracnose and other diseases or root maggots and other insect pests, the root rot of green onions will also be formed, and the prevention and control of pests and diseases should be stopped in time. For diseases, it is necessary to spray chemicals in time for sterilization and disinfection.

There are often weeds growing next to green onions, so many people choose to spray herbicides in order to prevent the nutrient and moisture of green onions from being consumed and stop weeding. However, if the medicinal ingredients of herbicides are too large and too concentrated, they will cause pesticide damage and cause the roots of green onions to rot. It is necessary to choose a safe herbicide, and water and dilute the solution in time after the pesticide damage is presented, so that it can grow robustly.