Do you know what the culprit of fertilizer seedling burning is?

We need to grasp the reasons for burning seedlings, analyze the local soil conditions and fertilization methods, and consciously avoid the phenomenon of burning seedlings in the process of purchasing and using fertilizer products and management. Of course, it is also necessary to cooperate with the local agricultural departments and industrial and commercial departments to do a good job in market supervision and solve the problem of defective products entering the market from the source. This is mainly due to the high concentration of fertilizers, as each fertilizer is diluted at different concentrations.

When using fertilizers, secondary dilution is required.

<>That is, the fertilizer is melted in water for the first time and then used. Taking drip irrigation as an example, you can drip irrigation water first, after half an hour, you can continue drip irrigation with water and fertilizer solution, and finally use water for drip irrigation for half an hour. This use dilutes the concentration of fertilizer in the soil, prevents roots and seedlings from burning, and also allows the fertilizer to spread farther with the water, allowing the roots to absorb better.

Chemical fertilizer is one of the important agricultural products with safe production, stable yield and high yield. If China can now have a full stomach and breeders and agricultural workers are inseparable, it is inseparable from fertilizer science and technology, product development and promotion.

However, it is indeed a big problem that such fertilizer destruction and seedling burning occur every year in agricultural production. Therefore, we need to develop measures to reduce the occurrence of this according to the fertilization method, the amount of fertilizer, etc. There are two main reasons why fertilizers burn.

The first is improper fertilization, and the second is excessive fertilization. As for how to avoid the occurrence of chemical fertilizer seedlings, only these two situations need to be avoided to basically avoid this situation.

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The reason for the burning of chemical fertilizers is biurea, which is a chemical substance, which will inhibit and damage the fine roots of seedlings, hinder the growth of seedlings, and also reduce the absorption of fertilizers by crops, so that the crop harvest is not good.

The culprit is the excessive addition of chemical fertilizer, which may be because too much damage to the roots in the process of fertilization, resulting in a relatively high concentration of ions, or it may be because of the wrong steps in the fertilization process resulting in the burning of seedlings.

The culprit of chemical fertilizer may be because there are too many rights and wrongs, and the concentration in the soil is too high, so it leads to the situation of chemical fertilizer burning seedlings.

Therefore, when adding fertilizer to seedlings, it is necessary to pay attention to the distance and amount of top dressing, and adopt a small amount of fertilizer. In the process of topdressing, keep at least 5 cm between the seedlings and the fertilizer, and the fertilizer can not be too close to the base of the rhizome of the seedlings to prevent the situation of burning seedlings and if the seedlings are damaged. Growers must also dilute the concentration of chemical fertilizers in the soil in a timely manner, and spray water on the foliar surface of seedlings to promote the growth of roots and reduce fertilizer damage.

1. Too much fertilization will increase the concentration of salt in the soil and water, or fertilization will be in direct contact with the root system of crops, so that the concentration of nutrients in the soil around the root system will be too high, and the water flow will be from low concentration to high concentration, which will cause the water from the roots (or seeds) of the crop to flow out into the soil and eventually burn the seedlings. 2. Unrotted organic fertilizer (such as chicken manure) contains a large amount of salt, germs and insect eggs, which will increase the cost and difficulty of controlling pests and diseases after application, and it is easy to burn roots and seedlings. 3. The depth of fertilization and the distance between fertilizer and seeds should be controlled.

Do not use the fertilization method of seed fertilizer with the same bed or deep sowing of fertilizer, otherwise it is easy to burn seedlings.

1. If the crop can no longer be preserved, it is necessary to replant or replant other crops of the same variety in time. When replanting or this seed, avoid the original fertilization position to prevent the seedlings from being burned again. 2.

Change the soil, re-water, fertilize. If the root fertilizer is applied too much and the seedlings are burned, the undissolved fertilizer on the soil surface can be removed and watered. 3. If rice and other aquatic crops are planted, the method of frequent drainage and irrigation should be immediately adopted to change the water and discharge the biuret to reduce the concentration of fertilizer.

The appropriate watering time is in the morning, and the amount of watering should not be too large to prevent further entry. Burn the roots. 4. After detoxification, an appropriate amount of nitrogen, phosphorus and potassium compound fertilizer (or foliar fertilizer with low concentration) should be applied to promote the growth of seedlings, and the corresponding bacterial fertilizer can also be used.

5. Do a good job of shading, spray some brassinin if necessary to help new leaves grow.

Excessive fertilization makes the concentration of ions in the soil larger, exceeding the concentration in the crop cells, and absorbs water from the plant body, so the plant shows wilting and water deficiency symptoms. It should not be applied alone for a long time. It should be applied in conjunction with multi-element fertilizers to promote nutrient coordination.

The concentration of chemical fertilizer should be reasonable and uniform, and watering should be timely.

Generally, it is because of excessive fertilization and large ion concentration in the soil; We must control the amount of chemical fertilizer when applying, pay attention to choosing the appropriate way, and water in time.

Because if the fertilizer is too much or too concentrated at one time, the concentration of the soil solution will be greater than the concentration of the root hair cell sap, and as a result, the water in the root hair cell sap will penetrate into the soil solution, so that the root hair cells can not only not absorb the water, but also lose the water, so that the plant wilts, which leads to the phenomenon of burning seedlings.

Chemical fertilizers are composed of a variety of different salts, so long-term and large application of these fertilizers composed of salts, when the fertilizer enters the soil, it will increase the concentration of the soil solution and produce osmotic pressure of different sizes, crop root cells not only can not absorb water from the soil solution, but pour the water in the cytoplasm into the soil solution, which leads to crop damage.

If the fertilizer damage is more serious, it is recommended to replace the soil with a different amount of soil for planting. If foliar fertilizer damage is caused, it is necessary to do a good job of shading and sprinkling water in time to save it. Ways to prevent seedling burning:

The same fertilizer cannot be applied alone for a long time, and it should be used alternately with nitrogen fertilizer; Use with multi-element fertilizer to maintain nutritional balance; Do not apply fertilizer at too high a concentration.

How to remedy excessive fertilization and burning seedlings.

1. How to remedy the burning of seedlings.

1) If it is too much fertilization that causes seedlings to burn, you can water a large amount of water to rinse the soil, which can dilute the concentration of fertilizer after watering.

2) If the fertilizer damage is more serious, it is recommended to directly replace the new soil for planting, and the original old soil is not recommended to be used.

3) If the fertilization causes foliar damage, you need to do a good job of shading, and at the same time spray some water to save the plants, and at the same time cooperate with the spraying of trime foliar fertilizer to help the new leaves grow.

2. How to prevent seedling burning.

1) The same fertilizer cannot be applied for a long time, and nitrogen fertilizers such as ammonium sulfate and ammonium bicarbonate should be used alternately.

2) It should be used in conjunction with multi-element fertilizers to promote nutrient supply and maintain nutrient balance.

3) The fertilization concentration should not be too high, the general root concentration is 1%-2%, and the foliar spraying concentration is appropriate, and the concentration is too high to hurt the roots.

After the maize seedlings are burned, the plants are weak, the growth is slow, the leaves are narrowed, the leaves are seriously columnar curl, the leaf color is yellow-green or gray-green, the primary roots and secondary roots are short and thick, the root hairs are few or no root hairs, and some can see black necrotic spots. In response to this situation, we put forward several reasonable suggestions: 1. Improve the understanding of compound fertilizer and purchase it correctly.

Fertilizers with clear identification and complete certificate numbers should be selected from regular manufacturers.

2. Improve the quality of land preparation and adopt scientific fertilization methods. Through mechanical deep ploughing and subsoiling, the bottom layer of the plough that is getting shallower year by year is broken, and the soil water storage and water supply capacity is improved. Improve the sowing and fertilization machinery, and change the fertilization under the seed to the side deep application or the deep application of the interspecific hole.

3. Scientific formula fertilization, appropriately reduce the amount of seed fertilizer. At present, the compound fertilizer sold on the market generally has a total nutrient content of 30%, which is a high-concentration compound fertilizer. Rational application should be advocated according to nutrient content, soil fertilizer supply capacity and crop fertilizer demand.

4. Strengthen fertilization technology training and the test and demonstration of new varieties of chemical fertilizers, and do a good job in publicity and introduction.

Fertilizer burning is caused by excessive or improper fertilization. When the concentration of chemical fertilizer is too high, it will lead to burns on the leaves and roots of seedlings, thereby affecting the growth and development of seedlings. However, once it is found that the seedling has suffered from fertilizer burns, we still have several ways to remedy it.

The first method is to take a flush method. Soak the seedlings in clean water for about 30 minutes to help remove the fertilizer and salt on the surface of the seedlings and reduce the absorption of fertilizers by the seedlings. After that, the soil around the roots of the seedlings is completely removed and replaced with new soil.

This method can significantly reduce the imitation concentration of chemical fertilizer absorbed by seedling roots.

The second method is to perform pruning. Prune damaged leaves, shoots, or roots. This method can reduce the part that is damaged by chemical fertilizers, making it easier for seedlings to resume growth.

The third method is to apply organic fertilizers. Organic fertilizers can help seedlings return to growth by improving soil quality and will slowly release nitrogen fertilizers and other essential nutrients.

Finally, when fertilizing, it is necessary to pay attention to the choice of the best fertilizer and avoid overapplication. The correct fertilization method can avoid fertilizer burns and protect the healthy growth of seedlings.

In the process of restoring fertilizer seedlings, we need to be patient and meticulous to provide the seedlings with a suitable environment and surplus nutrients to help them recover their health.

Fertilizer seedlings are burned because of excessive fertilization.

To prevent not burning seedlings, the fertilizer should be selected appropriately, the fertilization should be appropriate, and the fertilization position should be more than 3 cm away from the seedlings, so that the roots will not be burned!

This is caused by the serious excess of chemical fertilizer content in the soil, that is, fertilizer damage, you can properly water the soil with too high concentration, clean the soil at the roots of seedlings to avoid secondary burning of seedlings.

Look at your first picture, it's a lot of fertilizer. Animal manure must be fully fermented and rotted before it can be used, otherwise the seedlings will be burned; Chemical fertilizers should also be noted, and should not be applied directly to the roots (10 cm away) when making base fertilizer.

It is also necessary to pay attention to the root rot induced by high temperature and humidity.

Why can Yonghefeng perform well in crop growth?

1. Raw materials: Yonghefeng is mainly composed of fresh deep-sea fish slurry, equipped with algae, grains and other plant extracts that can ensure the growth of crops. It contains nitrogen, phosphorus, potassium, boron, zinc, manganese, molybdenum and other elements necessary for crop growth, and more than 20 kinds of high-efficiency nutrients such as fulvic acid, amino acids, citric acid, and algin.

2. Technical support: Yonghefeng is fermented and extracted from fresh deep-sea fish slurry at freezing point. Freezing point fermentation technology is currently only mastered by the United States.

3. Main technical indicators: total nutrients of nitrogen, phosphorus and potassium (N P2O5 K2O) 70g L, 500g L of organic matter such as deep-sea fish slurry, 100g L of various amino acids, 20g L of total trace elements, 50g L of water insoluble matter.

Fourth, the basic efficacy: the basic efficacy of Yonghefeng refers to its efficacy as a general organic fertilizer, which can increase the yield by 10%-15%. The difference is that according to the yield increase potential of the crop itself, the yield increase potential of root crops after the use of Yonghefeng is larger, more than 20%.

Fifth, the special effect of Yonghefeng:

1. After use, the crop has strong resistance to stress, which is manifested in: super drought resistance, waterlogging resistance, frost resistance, and prosperity control ability;

2. Stimulate the potential of self-development, and any external factors that restrict the growth of crops will be broken after Yonghefeng. It is manifested in: reducing pesticide residues, relieving pesticide damage, and treating stiff seedlings;

3. Achieve growth balance. Yonghe is rich in more than 20 kinds of amino acids and more than 100 kinds of enzymes that are only known in the world, which makes Yonghefeng full of activity for a long time and plays a positive role in crops;

4. Promote photosynthesis, realize crop growth metabolism, absorb organic matter through the foliar surface and transport it to the roots, and release part of the organic matter in the soil to enhance the organic matter in the soil;

5. Disease resistance. prevention and control of fungal diseases such as root rot, powdery mildew, downy mildew;

6. Non-toxic, non-polluting, no harm to the human body. This product does not contain any hormones, and dogs love to lick;

7. Resistant to salinity. Yonghefeng can be used for saline-alkali land improvement, and Yonghefeng can achieve soil acid-base balance with its large capacity of amino acids;

8. Increase the content of plant sugar and protein, accelerate plant maturity and shorten the maturity time. Listed at least 7 days in advance;

9. It can break the dormant period of seeds, promote germination, and improve the germination rate of seeds;

10. Improve the soil. Improve soil fertility and eliminate soil compaction and acidification.

If the organic matter raw materials in the biological fertilizer are strictly decomposed, they will not burn the seedlings, the root of the seedlings is that the organic raw materials that are not decomposed are applied to the soil due to the reproduction and metabolism of microorganisms to produce a large amount of heat to burn the seedlings, and the national standards also stipulate that the organic matter raw materials must be rotted, but there is no indicator of detecting the maturity of fertilizer in the current national standard, and the biological fertilizer industry is mixed, and many unscrupulous manufacturers often use unrotted organic raw materials in order to obtain maximum benefits, such as urban sludge, unrotted livestock and poultry manure, Kitchen waste and other biofertilizers are produced, so when using biofertilizers, it is necessary to conduct a small batch test to check whether the fertilizer is burning. It is recommended to use Fujinmen compound biological fertilizer, which is of high quality.

Special attention should be paid to the use of biological fertilizers, if the crops are burned without testing, we must keep the evidence, complain to the industrial and commercial bureau, claim compensation from the enterprise, and ensure their legitimate interests.