Reasonable selection of foliar fertilizer


Q: What is foliar fertilizer? What are the advantages of foliar fertilization compared with soil fertilization?

A: Foliar fertilizer is a fertilizer that is sprayed on the surface of stems and leaves (mainly leaves), and its nutrients can be directly absorbed and utilized. Compared with soil fertilization, foliar fertilization has the advantages of fast nutrient absorption, high utilization rate, and is not restricted by adverse conditions such as soil drought, waterlogging and salinization. Foliar fertilizer is especially suitable for the correction of deficiency. Because the spraying concentration can be strictly controlled, spraying micro-fertilizer does not cause soil pollution due to long-term and excessive application like micro-fertilizer applied to soil.

Q: Are the foliar fertilizer products on the market reliable? How to choose reasonably?

A: In order to rationally choose foliar fertilizer, it is necessary to pay attention to 3 points: First, it is compatible with soil fertilization. Foliar fertilizer nutrient supply is limited and can only be used as an auxiliary means. Therefore, it should be based on soil fertilization, combined with soil fertilization, crops urgently needed or lack of nutrients, and purchase foliar fertilizer containing what nutrients; second, purchase qualified product. Most of the commercial foliar fertilizers on the market are good, generally containing a variety of nutrients, and often added ingredients that can improve the spraying effect, such as active agents, chelating agents, growth regulators, and the like. However, there are also counterfeit and shoddy products, so farmers should look at the three certificates (fertilizer registration certificate, production license, product certificate) when purchasing, and keep the bills to prevent being deceived. It is best to buy it from well-known and trustworthy merchants. If you have the conditions, you can do a simple comparison test in your home. The third is to pay attention to the spraying method. Read the product manual carefully before use and strictly follow the requirements. Pay attention to the spraying concentration, spraying time, spraying times and weather conditions of the foliar fertilizer. Avoid the hot sun and rainy days.

Q: Is the foliar fertilizer sprayed into the water and sprayed on the leaf surface? Which elements or substances are suitable for foliar fertilizer?

A: Dissolve urea in water and adjust to a suitable concentration (for example, 0.3% to 0.5%), which is foliar fertilizer, but urea also contains biuret harmful to crops, so it is necessary to use superior products. In addition to urea, almost all chemical fertilizers can be used as foliar fertilizers as long as they dissolve in water and do not harm crops; some fully decomposed organic fertilizers and plant ash can also be used as foliar fertilizers after being stirred, filtered or clarified.

Q: Do you need to apply different types of foliar fertilizer to different types of crops?

A: Just like the same kind of food, men, women and children can eat, but the specific requirements are different, the same is true for crop spraying foliar fertilizer. The same foliar fertilizer can be used for crops of different types and different growth stages, but the specific requirements are different. For example, fruit trees and vegetables in larger field crops are more likely to lack medium and trace elements, and more need to be controlled by foliar fertilizer; in field crops, focus on crops that are sensitive to deficiency, for example, rice and corn are prone to zinc deficiency. Spraying 2~3 times of 0.1% zinc sulphate solution before rice tillering and corn jointing; cotton and rapeseed are easy to be deficient in boron, which can be sprayed 2~3 times 0.1%~0.2 in cotton bud stage and rape bud stage respectively. % boric acid or borax solution; soybeans and peanuts are prone to iron deficiency. Soybeans can be sprayed 3 to 4 times of ferrous sulfate at a concentration of 0.3% to 0.5% from the seedling to the early flowering stage. Peanut can be sprayed 2~3 at the flowering stage. The secondary concentration is 1% to 3% of ferrous sulfate.

Q: Is there no need to apply fertilizer with foliar fertilizer? What time is the foliar fertilizer suitable for administration?

A: As mentioned earlier, foliar fertilization should be based on soil fertilization, but it is generally not a substitute for base fertilizer. Because the nutrients applied by foliar fertilizers, especially large amounts of elements, account for only a small fraction of the crop requirements. For example, spraying corn, wheat, etc. 2~3 times 0.5%~1% of urea can only meet 5%~10% of the total nitrogen requirement, so foliar fertilizer can only be used as an auxiliary means of soil fertilization, and Cooperate with each other to learn from each other.

Various foliar fertilizers can be applied at different growth stages, but different growth stages have different roles and requirements. The seedling stage seedlings are delicate, the spraying concentration is low, and the micro-deficiency elements are mainly used in the prevention and treatment; in the middle and late stages, the crops grow up, the spraying concentration can be higher, and the nitrogen, phosphorus and potassium foliar fertilizers are the main ones. The main purpose is to prevent post-fertilization and increase yield and quality. For example, in the late stage of wheat, dry hot wind weather can be sprayed with 0.3% potassium dihydrogen phosphate solution, 0.5% urea solution and pesticides to prevent premature aging, dry hot wind and pests, and increase 1000-grain weight.

(Professor of China Agricultural University Wang Xingrenwen / map)

Q: What is foliar fertilizer? What are the advantages of foliar fertilization compared with soil fertilization?
A: Foliar fertilizer is a fertilizer that is sprayed on the surface of stems and leaves (mainly leaves), and its nutrients can be directly absorbed and utilized. Compared with soil fertilization, foliar fertilization has the advantages of fast nutrient absorption, high utilization rate, and is not restricted by adverse conditions such as soil drought, waterlogging and salinization. Foliar fertilizer is especially suitable for the correction of deficiency. Because the spraying concentration can be strictly controlled, spraying micro-fertilizer does not cause soil pollution due to long-term and excessive application like micro-fertilizer applied to soil.
Q: Are the foliar fertilizer products on the market reliable? How to choose reasonably?
A: In order to rationally choose foliar fertilizer, it is necessary to pay attention to 3 points: First, it is compatible with soil fertilization. Foliar fertilizer nutrient supply is limited and can only be used as an auxiliary means. Therefore, it should be based on soil fertilization, combined with soil fertilization, crops urgently needed or lack of nutrients, and purchase foliar fertilizer containing what nutrients; second, purchase qualified product. Most of the commercial foliar fertilizers on the market are good, generally containing a variety of nutrients, and often added ingredients that can improve the spraying effect, such as active agents, chelating agents, growth regulators, and the like. However, there are also counterfeit and shoddy products, so farmers should look at the three certificates (fertilizer registration certificate, production license, product certificate) when purchasing, and keep the bills to prevent being deceived. It is best to buy it from well-known and trustworthy merchants. If you have the conditions, you can do a simple comparison test in your home. The third is to pay attention to the spraying method. Read the product manual carefully before use and strictly follow the requirements. Pay attention to the spraying concentration, spraying time, spraying times and weather conditions of the foliar fertilizer. Avoid the hot sun and rainy days.
Q: Is the foliar fertilizer sprayed into the water and sprayed on the leaf surface? Which elements or substances are suitable for foliar fertilizer?
A: Dissolve urea in water and adjust to a suitable concentration (for example, 0.3% to 0.5%), which is foliar fertilizer, but urea also contains biuret harmful to crops, so it is necessary to use superior products. In addition to urea, almost all chemical fertilizers can be used as foliar fertilizers as long as they dissolve in water and do not harm crops; some fully decomposed organic fertilizers and plant ash can also be used as foliar fertilizers after being stirred, filtered or clarified.
Q: Do you need to apply different types of foliar fertilizer to different types of crops?
A: Just like the same kind of food, men, women and children can eat, but the specific requirements are different, the same is true for crop spraying foliar fertilizer. The same foliar fertilizer can be used for crops of different types and different growth stages, but the specific requirements are different. For example, fruit trees and vegetables in larger field crops are more likely to lack medium and trace elements, and more need to be controlled by foliar fertilizer; in field crops, focus on crops that are sensitive to deficiency, for example, rice and corn are prone to zinc deficiency. Spraying 2~3 times of 0.1% zinc sulphate solution before rice tillering and corn jointing; cotton and rapeseed are easy to be deficient in boron, which can be sprayed 2~3 times 0.1%~0.2 in cotton bud stage and rape bud stage respectively. % boric acid or borax solution; soybeans and peanuts are prone to iron deficiency. Soybeans can be sprayed 3 to 4 times of ferrous sulfate at a concentration of 0.3% to 0.5% from the seedling to the early flowering stage. Peanut can be sprayed 2~3 at the flowering stage. The secondary concentration is 1% to 3% of ferrous sulfate.
Q: Is there no need to apply fertilizer with foliar fertilizer? What time is the foliar fertilizer suitable for administration?
A: As mentioned earlier, foliar fertilization should be based on soil fertilization, but it is generally not a substitute for base fertilizer. Because the nutrients applied by foliar fertilizers, especially large amounts of elements, account for only a small fraction of the crop requirements. For example, spraying corn, wheat, etc. 2~3 times 0.5%~1% of urea can only meet 5%~10% of the total nitrogen requirement, so foliar fertilizer can only be used as an auxiliary means of soil fertilization, and Cooperate with each other to learn from each other.
Various foliar fertilizers can be applied at different growth stages, but different growth stages have different roles and requirements. The seedling stage seedlings are delicate, the spraying concentration is low, and the micro-deficiency elements are mainly used in the prevention and treatment; in the middle and late stages, the crops grow up, the spraying concentration can be higher, and the nitrogen, phosphorus and potassium foliar fertilizers are the main ones. The main purpose is to prevent post-fertilization and increase yield and quality. For example, in the late stage of wheat, dry hot wind weather can be sprayed with 0.3% potassium dihydrogen phosphate solution, 0.5% urea solution and pesticides to prevent premature aging, dry hot wind and pests, and increase 1000-grain weight.
(Professor Wang Xingren of China Agricultural University)
Farmers Daily
【Comment】 【Print this article】 【Close this page】 【Large, medium and small】

1. Product introduction

   Coal-based column desulfurization column Activated Carbon used high quality Anthracite as raw material. Adding a certain proportion of adhesive, auxiliary catalyst, by selection, proportioning, grinding, molding, drying, carbonization, activation and deep processing made. 


2. Application

   This product is mainly used in all kinds of gas, such as water gas, semi water gas, coke oven gas, natural gas, carbon dioxide gas, city gas, synthetic ammonia process gas, and exhaust gas in sulfur dioxide chemical raw materials and other containing mercury. It also used for adsorption of flue gas of power plant equipment, including the removal of sulfur dioxide and saltpeter, which replace the lime desulfurization process before. It also applies to other gas that contains mercury cannot get rid of the low concentration, which is equal to or below the national emission standard.  

3.Transportation and Packing

 Woven bag, lined with plastic film bags, each 25kg can also be packaged according to customer demand. The product should be placed in a cool and dry place during storage; When transportation, it prevents to mixed with hard materials, to prevent carbon particles broken that affecting the quality of packaging, to prevent breakage. To avoid leakage or mixed with debris; to avoid water, oil and fire.



Column Desulfurization Column Activated Carbon

Activated Carbon Filter Paper,Desulfurization Activated Carbon,Solvent Recovery Activated Carbon,Sewage Treatment Activated Carbon

Ningxia YiFeng RuiDa Activated Carbon Co.,LTD , https://www.nxyfrdhxt.com