How to prevent dry heartburn in cabbage?

Dried heartburn is a particularly common physiological disease, mainly because it grows on one side of the young leaves of the cabbage, which makes the cabbage lose its value and is a serious loss. The main reason why there is dry heartburn in cabbage is that the problem of time should be prevented and treated in time. Studies have found that if the cause of high fever is found in Chinese cabbage, it is mainly due to calcium deficiency and timely calcium supplementation.

After calcium deficiency, cabbage is more sensitive, which will be manifested in burnt heartburn. <>

During the calcium deficiency period, the temperature is gradually getting lower, and the light cooperation is constantly decreasing, and the light will be reduced after the light is reduced. Especially the new leaves inside, the light effect becomes weaker, and it is difficult to absorb enough calcium, and over time, the cabbage enters the energy of lack of calcium. In this special period, once calcium deficiency occurs, the symptoms of dry heartburn will appear, affecting the yield and quality of cabbage.

How to prevent this symptom, if you want to prevent this symptom, you should spray calcium supplements in time, which is also the most effective way to supplement calcium. When it is about to enter autumn, spraying 30 kilograms of calcium every day can play a role in preservative, and can also replenish calcium substances to the cabbage in time. Rapid supplementation of the calcium needed by the cabbage will be alleviated, these symptoms, spray three to five times a day, spray for half a month can prevent the symptoms of dried heartburn of the cabbage, and the effect is particularly obvious.

Before scientific irrigation and sowing, the ground should be watered thoroughly, so that the seedlings of the cabbage will have nutritious water, and the seedlings should be moderately squatted according to the weather and the growth trend of the plants. Chinese cabbage is an acidic plant, which needs more acidic soil and can also adjust the alkalinity neutrality. The general soil will be deficient in calcium, as long as these conditions can be alleviated in time, it will prevent the symptoms of dry heartburn in cabbage.

After alleviating these symptoms, the cabbage is very easy to grow, and the sales are particularly high, and the annual income is probably very ideal, and there is a lot of income.

Pesticides. Because my cabbage had dry heartburn, and then pesticides were applied, so pesticides should be used to prevent and control them.

Once this happens, the chemical composition should be used, and the appropriate ratio of water and chemical composition should be selected, and then the pesticide should be sprayed.

Cabbage should be sprayed with some pesticides, some pesticides can prevent dry heartburn in cabbage.

Dried Chinese cabbage heartburn is generally a physiological disease caused by the physiological calcium deficiency in the plant caused by adverse environmental conditions. It is related to climatic conditions, nitrogen fertilizer application rate, soil chemical properties, irrigation amount and water quality.

It is because there is no timely irrigation of a large area in the process of planting, so in this case, there is also a lack of water, and this situation occurs because of the lack of water.

This is due to the fact that too many nutrients and fertilizers are added at the time of planting, resulting in a surplus.

Generally, this situation occurs because of the lack of water, and Chinese cabbage is a plant that likes water, so it must be replenished in the process of planting.

Chinese cabbage heartburn, also known as skin rot, is a physiological disease, in the process of Chinese cabbage growth, due to plant physiological dysfunction, and physiological calcium deficiency disease, this disease generally occurs in the lotus sitting period of Chinese cabbage, the heart stage, seriously affecting the quality of Chinese cabbage. The disease is particularly severe in northern regions.

Soil causes, such as soil acidification, soil moisture content, fluctuating levels. Caused by calcium deficiency. For example, the low content of soil organic matter and the excessive application of chemical fertilizers lead to high soil concentration, which will affect the absorption of calcium by the roots.

Excessive application of nitrogen fertilizer can cause calcium deficiency in a high-temperature and dry environment, which will lead to core rot. Water frequently, keep the furrow surface wet and dry; Dry heartburn was found to be watered immediately and sprayed with a mixture of calcium oxide and 2000 times naphthalene acetic acid; or 1% superphosphate solution, or manganese sulfate solution, once every 5 7 days, a total of 3 times. It is strictly forbidden to water industrial sewage.

Chinese cabbage heartburn is caused by the external environment, such as heavy cropping, that is, you can't grow Chinese cabbage all the time on one piece of land. For example, the weather is too dry, and the Chinese cabbage is not watered in time. For example, there are too many sulfuric acid fertilizers in the ground, which will cause heartburn in Chinese cabbage.

Rational nitrogen application, avoid excessive application of nitrogen fertilizer, appropriately increase the application rate of phosphorus and potassium fertilizer, promote the balanced absorption of various nutrients by Chinese cabbage, and improve disease prevention and disease resistance. In the rosette stage and bulb stage, combined with watering once each.

Chinese cabbage heartburn is caused by the external environment, such as heavy cropping, that is, you can't grow Chinese cabbage all the time on one piece of land. For example, the weather is too dry, and the Chinese cabbage is not watered in time. For example, there are too many sulfuric acid fertilizers in the field, which will cause heartburn in Chinese cabbage.

Rational nitrogen application, avoid excessive application of nitrogen fertilizer, appropriately increase the application rate of phosphorus and potassium fertilizer, promote the balanced absorption of various nutrients by Chinese cabbage, and improve disease prevention and disease resistance. In the rosette stage and bulb stage, combined with watering once each.

Some places are called heart sickness, some places are called dry heart disease, and some places are called heartburn. Although it is marked with the word "disease", strictly speaking, this disease is not another disease, and it is not a disease caused by the infection of hail finch eubacteria, but a physiological disease. Turn it inward into a spoon shape.

The growth of the diseased plant is poor, the leaf bulb is loose and unreal, and the leaf bulb is cut, and the edge of the middle leaf becomes yellow and dry, and the leaf veins are yellow-brown. Diseased leaves are formed as the plant grows into the heart. The petioles have brown streaks.

It is perishable from harvest to cellar storage, but it has no odor.

1. The most direct is to change varieties, and there are great differences between various varieties.

2. Dry heartburn pathology is a transport physiological disorder. Balance the concentration of cations in soil and roots, and reduce the content of chloride ions and sulfate ions. Before planting, the soil should be turned deeply, and more decaying farmhouse fertilizer should be applied to increase soil permeability.

3. Strengthen water management, see dry and wet. Don't let the soil dry out and waterlog.

4. Spray calcium, manganese, zinc trace elements. Qiaosheng.

5. In the later stage of the rosette period, the plants should grow wildly, and the appropriate artificial assistance should be added.

Proper fertilization. Increase the application of plant ash, well-rotted organic fertilizer, etc. Do not overapply nitrogen fertilizer. At the same time, the foliar spraying of potassium ditrace hydrogen phosphate can make the leaves of the plant thick, the leaves are fresh and tender, and the taste is particularly good.

The disease began to occur at the rosette stage, and some young leaves only showed dry edges, and only showed symptoms after bulbling, and the development was serious during the storage period. If these symptoms are the ones you can take, there are some precautions:1

On the one hand, it is due to the relative lack of calcium due to excessive plant growth, on the other hand, calcium and nitrogen have an antagonistic effect, and ammonium ions can replace calcium and leach calcium. Dried heartburn of Chinese cabbage has a great relationship with soil moisture.

In the growing season of cabbage, try to increase the temperature difference between day and night as much as possible to make the cabbage leaves thicker, and apply an appropriate amount of nitrogen fertilizer to the cabbage while spreading potassium fertilizer. After potassium fertilizer is applied, it can catch the manufacture and transportation of nutrients, which can make the leaf bulb fruit, because the most potassium fertilizer is required at the balling stage, if the calcium content in the cabbage leaves is high, it will reduce the situation of cabbage heartburn, and the yield of cabbage will be relatively high. In addition, it is necessary to pay attention to fertilization, and apply more organic fertilizer appropriately, so that the root system of cabbage can be developed, the health of cabbage can be improved, and the ability to resist disease will be relatively improved.

It happens every year in the future, and it is best to change the land and plant cabbage again, otherwise it will be difficult to smelt. I am a farmer, this situation has been encountered, I have checked the information that it is a lack of calcium, etc., but you can't make up for it, every year to plant, every year, so it is best to change the land, but you can't change it, just add organic fertilizer. The soil is alkaline, calcium ions are fixed, can not be absorbed by plants, because it is only the soil with chemical fertilizer, so it is necessary to apply more organic fertilizer, improve the soil pH value, make the soil pH value neutral and slightly acidic, which is conducive to the free and release of calcium ions in the soil.

Generally, in drier years, especially in the drier years of Chinese cabbage seedling stage or rosette stage, the phenomenon of heartburn in Chinese cabbage becomes more serious. The soil is too dry, which affects the absorption of nutrients by the root system of the plant, so improper water management is also the cause of heartburn in Chinese cabbage.

Apply calcium fertilizer to the soil and reduce the amount of chemical fertilizer. When acidic soil is deficient in calcium, quicklime can be applied, which can increase the calcium content in the soil on the one hand, and improve the soil on the other hand, neutralize acidity and promote crop growth. For calcareous and neutral soils, although there is no calcium deficiency in the soil, the amount of nitrogen and potassium used in fertilization should be controlled to prevent it from inhibiting the uptake of calcium by the plants.

Foliar calcium sprays. Chinese cabbage is mainly planted in northern China, although the soil in the north is not deficient in calcium, but because the plant can not absorb and cause calcium deficiency, so foliar calcium fertilizer is an effective way to supplement the calcium element in the heart stage of Chinese cabbage. The calcium chloride or calcium nitrate solution that can be sprayed on the foliar surface should be sprayed in the evening, avoiding spraying in the early morning when there is dew and at noon during the high temperature period, and the back of the leaves and young leaves should be sprayed mainly.

Foliar sprays can be carried out 2 to 4 times, with an interval of 10 days each time.

Prevent soil from drying out. In the north of our country, when the Chinese cabbage grows to the middle and late stages (mid-September to late October), there is less rain. In order to avoid soil water deficiency and induce physiological calcium deficiency, special attention should be paid to timely irrigation to promote the continuous growth of the root system, so as to prevent the occurrence of the disease.

To choose cabbage varieties with strong disease resistance, organic fertilizer should be reapplied when planting, the ground temperature should be increased, and the appropriate amount of watering should be applied, especially in the case of fertilizer and water at the same time, we must pay attention to the concentration, so as not to cause dry heartburn due to excessive concentration. During the growth period, organic fertilizer should be increased, with phosphorus and potassium fertilizer and micro fertilizer reasonably, less single nitrogen fertilizer, in the balling period, calcium-containing foliar fertilizer can be sprayed to the heart leaves, and it is best to spray it once every 10 days or so, which can be an excellent supplement to the calcium element of the plant and prevent dry heartburn.

Pesticides. Because my little cabbage got dry heartburn, it was cured after spraying pesticides, so it should be treated with pesticides.

Chinese cabbage is known as the "king of vegetables", and it is also one of the favorite vegetable products of the people in northern China. As a result, its cultivation area is very extensive. However, in recent years, dried heartburn of Chinese cabbage has caused serious harm to farmers, and it has shown an increasingly serious trend It mainly occurs in the early stage of balling, and the edges of young leaves are water-stained and translucent, and wilt and appear white ribbon after dehydration.

After balling, it seems to be normal, but peeling off the leaf ball can see that the leaf margin part of the leaf is dried and yellowed, the mesophyll is dry paper-like bands or irregular lesions, sometimes expanding, the leaf tissue is water-stained, the leaf veins are light yellow-brown, and the juice is sticky at the beginning of the disease. Sometimes dry or wet rot occurs. <>

1. Choose a pastoral with fertile soil and low salt content, and low-lying saline-alkali land with perennial disease, and Chinese cabbage cannot be planted before transformation.

2. Reasonable fertilization, increase the application of farm fertilizer, and apply sufficient basal fertilizer to the soil that uses ammonia nitrogen for a long time, improve the soil structure, and improve the ability to retain water and fertilizer. The amount of nitrogen fertilizer should be controlled, and it is appropriate to control the amount of nitrogen fertilizer at 40 60kg per mu according to soil fertility; At the same time, it is necessary to increase the application of phosphorus and potassium fertilizers to achieve the combined use of the three elements. It is necessary to choose plots with fertile soil, loose texture, good drainage, low salt content, and no Chinese cabbage and other cruciferous vegetables planted in the same field, and try not to choose red loam soil lacking in calcium and low-lying saline-alkali land.

Before seeding or transplanting, the land should be carefully prepared, so that the upper and lower parts are solid, and the soil is broken and flat, so as to promote the development of the root system and improve the ability to absorb and supply fertilizer. 125kg hm2 of lime was used for acidic red loam soil, mixed with soil miscellaneous fertilizer to supplement calcium and reduce acid; Alkaline soil was applied with gypsum powder 1500kg hm, and 1 deep tillage was carried out to loosen the soil, promote the increase of plant root hair, and enhance the absorption capacity. The specific requirements are that the soil organic matter content of vegetable field should be 3 to bu, the total salt content should be below 0 2, and the sodium chloride content should be less than 0 05.

3. Scientific irrigation, should be watered thoroughly before sowing, the seedling stage advocates small water frequent watering, the rosette period according to the weather, moisture and plant growth moderate squatting seedlings, dry weather can also not squat seedlings. After squatting, the seedlings should be watered sufficiently, and the ground should be kept moist during the hearting period. After irrigation, it should be cultivated in time to prevent soil compaction and salinity.

Avoid watering fields with sewage and salt water. The availability of calcium is poor when the soil is dry and dehydrated, and when there is too much water, it inhibits the uptake of nutrients by the roots. Therefore, in the whole growth period of Chinese cabbage, small water should be used to water frequently, and the soil should always be kept moist, not dry or waterlogged

After irrigation, cultivate in time to prevent soil, saline-alkali l}: avoid watering the field with sewage and alkaline water. After the Chinese cabbage enters the rosette, I In most parts of the north, the general year is high and cool in autumn, continuous drought, and it is necessary to irrigate once every 15 days or so, but the irrigation should be stopped before harvest, in case the leaf bulb has too much water content and is not resistant to storage.

4. Chinese cabbage needs a lot of humidity when growing, so it should be harvested as soon as possible with a more solid leaf ball, and the harvest period should not be delayed for too long, generally 15d, excessive maturity often causes cracked balls and reduces quality.