What causes a bad root system in vegetables?

Soil. Soil is one of the basic mediums for vegetable growth, and it is the main absorption of nutrients and water for vegetable growth. Under normal circumstances, vegetable soil requires looseness, air permeability, high organic matter content, and sufficient nutrient content.

However, due to the planting structure, perennial cultivation, application of chemical fertilizers and years of cultivation, the soil has been significantly degraded, such as hardening, salinization, salinization, acidification and other unfavorable factors. This is very detrimental to the root growth of vegetables and will directly affect the growth of vegetables. Crops that are repeatedly planted and greeted.

Vegetable planting will inevitably encounter repeated planting and greeting planting. However, due to the variety of vegetables planted and the many planting seasons, different vegetables will have different performances. Generally speaking, the poor root growth of vegetables caused by repeated intercropping and stubble is mainly due to the toxins secreted by the roots, soil-borne pests and diseases, and the insufficient demand for different nutrients of different vegetables, resulting in limited root growth, and poor growth of roots and shoots caused by nutrient deficiency.

Factors of water management. Relatively speaking, vegetable cash crops.

The resistance is greater than that of the Poaceae family.

The crop is much worse. Overwatering can cause root rot. Excessive drought can also cause the death of vegetables.

It can be said that the requirements for water in the process of vegetable planting are relatively high. More scientific irrigation and water management are needed. Soil stress caused by over-fertilization. Vegetable cultivation has a high demand for nutrients, especially some leafy vegetables.

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As a result, many vegetable growers use a lot of chemical fertilizers.

to promote the growth of vegetables. However, too much chemical fertilizer will form a high concentration of fertilizer environment after dissolving in the soil, which is the concentration environment of salt solution, which is bound to cause the occurrence of vegetable root dehydration, and is also a stress effect on the soil, which will cause poor root growth of vegetables in a certain period of time. Therefore, there are many factors that contribute to the poor growth of vegetable roots.

According to the actual situation of production, we should judge what causes the poor growth of the root system, so as to formulate corresponding treatment measures to improve the growth of vegetables.

This may be due to a drought in the vegetables, or it may be due to the occurrence of pests and diseases in the vegetables, and it may also be that the fertilizer is sprinkled too much, and it is also possible that the pesticides are sprayed too much, and if the situation is severe, it may also be because the seeds of the vegetables are not very good.

It may be that the soil is not particularly good, there are some germs in the soil, the soil is not too much fertilizer, the soil irrigation is not particularly sufficient, and it may be that the soil has more water, which will cause the roots of vegetables to grow not particularly well.

There are problems with the soil, there are also problems with fertilizer, it is very likely that the bottom fertilizer is insufficient, the soil has poor air permeability, and there are many pests.

The reasons for the lack of growth of vegetable leaves may include low temperature, insufficient light, insufficient fertility, improper watering, etc.

1. The temperature is too low.

Most vegetables have a good tolerance to temperature and can tolerate high or low temperatures for a short time, but if they are exposed to extreme temperatures for a long time, such as sub-zero temperatures for a long time, the vegetables will enter dormancy or be frostbitten, so there will be growth stagnation and inability to continue to grow.

2. Insufficient light.

Vegetables are also plants, and they also need sufficient light to meet their photosynthetic needs and synthesize the substances they need to promote growth. If vegetables are in a dark or weak environment for a long time, or if the light time is insufficient for a long time, it will cause insufficient photosynthesis and slow growth of plants.

3. Insufficient fertility.

Vegetables need sufficient nutrients to supply in the process of growth and development, so we should periodically apply diluted Hai Ho Wei water-soluble fertilizer or decomposed fertilizer to them. However, if we wait until the only remaining basal fertilizer in the soil is also exhausted and there is still no top dressing, it will cause slow growth of vegetables and malnutrition.

4. Improper watering.

The biggest possibility that vegetables do not grow is a problem with the root system, and the problem of the root system is generally inseparable from the problem of watering. It is possible that when watering, too much or too little watering will cause the roots of the plant to die due to lack of water or rot due to stagnant water, which will cause the vegetables to not grow.

There will be a lot of rotten roots in vegetables during the seedling period, which will affect the normal growth of seedlings, so what is the reason for vegetable root rotten? Let me tell you the reasons for the rotten roots of vegetables!

Causes of rotten roots in vegetablesThe main causes of rotten roots in vegetables are:

1) Low air temperature and ground temperature; 2. Insufficient light. (3) The humidity in the nursery bed is large; (4) The seedbed is not easy to ventilate.

These will lead to the growth of seedlings weakened, it is easy to occur root rot, the general symptom is that the roots are rust-colored rot, the seedlings grow slowly after the soil does not send new roots, and some even stop growing, the leaf color is gray and green, and gradually turn yellow, causing the whole plant to wilt and die.

The solution to rotten roots in vegetables1. Increase the application of organic fertilizer.

Decomposed organic fertilizer, especially hot farmhouse fertilizer, can not only improve the disease resistance of seedlings, but also increase the soil temperature of the seedbed and reduce the incidence rate. Before raising seedlings, the well-rotted and finely crushed hot farmhouse fertilizer and bed soil are evenly mixed in the seedbed at a ratio of 5:1 as seedling soil, and nitrogen fertilizer is applied as the base fertilizer as little as possible in the seedbed.

Note: Organic fertilizer should be fully decomposed, and it is best to treat it with a professional starter to avoid "burning seedlings" and a large loss of nutrients.

2. Control the amount of watering.

When raising seedlings in protected areas such as greenhouses or greenhouses, the seedbed is generally not watered when it is not obviously dry (the topsoil is not scattered in hand); The amount of watering should not be too large when there is a clear drought.

3. Pay attention to ventilation.

After the cotyledons, choose sunny and warm weather to uncover the mulch for ventilation, and evenly sprinkle a layer of fine dry soil into the seedbed, and then cover the mulch tightly, which can not only reduce the humidity of the bed soil, but also have a certain warming effect.

Fourth, the application of rooting agent.

The use of functional microorganisms and their related products to improve the microecological environment of seedling roots can promote early germination of seeds, increase ground temperature, and promote weak seedlings to become strong seedlings. A better rooting agent can achieve the dual effects of "prevention" and "treatment" at the same time.

Prevention and control of cabbage root rot Cabbage root rot disease is a common disease, and there are many reasons for this disease, including root rot caused by physiological diseases, and pathological root rot caused by soft rot. This has a lot to do with excessive rainfall, high soil moisture, and high and low temperatures.

Cabbage belongs to the cold vegetables, the suitable temperature for growth is 10 22, not heat-resistant, when the temperature exceeds 32, the photosynthesis is very weak and the respiration is enhanced, and the growth is very weak. Chinese cabbage is a moisture-loving vegetable, and moist soil conditions are required throughout the growing season, especially Chinese cabbage can not lack water in the rosette stage and the core stage. Cabbage is also not resistant to waterlogging, and long-term water staining will also cause the roots to die.

Because in the high temperature season, if there is continuous rain, the soil is full of moisture, lack of oxygen, and the roots of cabbage have anaerobic respiration, which will lead to the death of root cells.

When the seedling is sick, the base of the stem is water-soaked, rotten roots, lodging, and star-studded. When the adult plant is sick, the outer leaves wilt during the day, recover at night, and then gradually die from the outer leaves. The roots turn brown and rot, the middle of the roots shrinks, and the lower part disappears, leaving only the upper half.

Summary. 1. Regulate the soil.

Cabbage is planted in acidic soil plots, and root swelling occurs more severely. Irrational application of chemical fertilizers and partial application of nitrogen fertilizers can cause soil acidification. Therefore, before planting cabbage, it is necessary to improve the pH of the soil.

If you have plant ash at home, you can apply sufficient plant ash to the base fertilizer, or apply lime to neutralize the acidity of the soil. Adequate application of organic fertilizer can also prevent soil acidification.

Article**3 How to solve the underdeveloped root system of Chinese cabbage.

1. Regulate the soil.

Cabbage is planted in acidic soil plots, and root swelling occurs more severely. The rational application of chemical fertilizers and the partial application of nitrogen fertilizers will cause soil acidification. Therefore, before planting cabbage, it is necessary to improve the pH of the soil.

If you have plant ash at home, you can apply sufficient plant ash in the bottom preparation of the Void Fertilizer Zen, or apply lime to neutralize the acidity of the soil. Adequate application of organic fertilizer can also prevent soil acidification.

Article 32, improve the vitality of the root system.

During the growth period of cabbage seedlings, spraying brassinolide and triacosanol can improve the growth ability of the root system, and the locust promotes the emergence of new roots, and the root system is strong, which can improve the disease resistance of cabbage and reduce the occurrence of root swelling. Spraying at the stage of adult plants is conducive to cabbage core, reducing the occurrence of reputation due to disease, and affecting the core of the attack section.

3. Reasonable fertilization.

When fertilizing cabbage, nitrogen, phosphorus and potassium should be used together. In acidic soil, it will inhibit the absorption of calcium, magnesium and other trace elements by plants. When fertilizing, potassium fertilizer should be increased appropriately, and calcium potato fertilizer should be sprayed in the early stage of balling to promote cabbage balling.

4. Chemical prevention and control of cabbage root swelling mainly affects the growth of roots. In the past, cabbage was planted, and the occurrence of root swelling disease was compared to the plot with severe swelling of the first base. Before transplanting, carbendazim and rooting agent can be used to dip the roots to prevent root diseases.

If you find that the growth of cabbage is slow in the seedling and adult stage, you can pull out a celery tree to see the growth of the roots. If it is root swelling disease, it can be irrigated with chlorobromioisocyanuric acid, dimethazine and other agents to reduce the occurrence of root swelling disease. In addition, when root swelling disease occurs, it may be infected with soft rot at the same time, and farmers should do a good job of prevention and control, and can spray with copper preparations.

Dashengqiao collapsed cabbage will also be due to heavy planting of soil elimination disease, if there is no rotation conditions, to do a good job in the prevention and control of root swelling disease. Improve the disease resistance of plants, adjust the acidity of the soil, and do a good job in the prevention and control of diseases in the early stage to reduce the occurrence of diseases.

FYI.

Adjust the soil Cabbage is planted in acidic soil plots, and root swelling occurs more severely. Irrational application of chemical fertilizers and partial application of nitrogen fertilizers can cause soil acidification.

Therefore, before planting cabbage, it is necessary to improve the pH of the soil. If you have plant ash at home, you can make fertilizer at the bottom. 2.

Improve the vitality of the root system During the growth period of cabbage seedlings, spraying brassinolide and triasanol can improve the growth ability of the root system and promote new roots. 3.Reasonable fertilization When fertilizing cabbage, nitrogen, phosphorus and potassium should be used together.

In acidic soil, it will inhibit the plant's resistance to calcium, magnesium and other trace elements. 4.Chemical control of cabbage root swelling mainly affects the growth of roots.

1.First of all, protect the crops.

After the occurrence of root disease, there will be a lack of water wilting, at this time, it is necessary to reduce the temperature in the shed, reduce the water required for crop transpiration for cherry blossoms, and increase the humidity in the shed, spray water on the foliar surface, and also spray aspirin on the foliar surface to ensure that the crops will not die due to lack of water.

2.Secondly, the root irrigation of the medicine is as follows:

a.Irrigating the roots of the medicine is not flushed with water: the amount of medicine required to achieve the use concentration of the agent is very large, which will greatly increase the cost.

b.When irrigating the roots, it is necessary to irrigate the whole shed plants, and it is difficult to solve the problem of single irrigation "dead plant songbark", and the plants with serious disease can be irrigated, and the plants that do not suffer from disease should also be irrigated.

c.Note that the concentration of the dosing should be slightly higher.

d.Avoid "watering a dead batch", pay attention to irrigation before watering or between watering, not after watering.

In our daily life, the root system of vegetables is underdeveloped and the plants are short, what is the reason? Soil problems, poor air permeability of compaction, and many harmful bacteria, at this time, we need to maintain and condition the soil in advance, supplement beneficial bacteria, and use both the functions of self-nutrient biological bacteria to fertilize high or low temperature, excessive rainy days, affecting plant growth, you can supplement foliar fertilizers containing organic titanium, such as organic titanium, boron, calcium foliar fertilizer or phosphorus and potassium fertilizer.

When transplanting vegetable seedlings, do not necessarily hurt the roots, the root injury will prolong the seedling period, compared with the normal slow seedling tomato seedlings to bloom later, this is because the transplanting is not careful to hurt the seedling roots. In order to prevent the root system from being injured, the seedbed should be watered thoroughly when transplanting seedlings and then planted separately, which can prevent the original soil from separating from the root system and prevent the root system from breaking.

If the root system is simple and underdeveloped, the plant will be in a state of defertilization, and the growth will be weak and short. The general causes are: insufficient soil fertility and lack of nutrients; The soil is compacted and has poor air permeability; overwatering, excessive humidity, or lack of water and drought; high and low temperature effects; Lack of light; Pest.