When it comes to potash, everyone is familiar with it, and it is also the most widely sold fertilizer. Here, I would like to tell you a few secrets about what potash has to say...
1. Type?
Answer: Potassium fertilizer belongs to a strong acid salt, and its name is related to what acid root is corresponding to it. The corresponding nitrate is called potassium nitrate. The corresponding sulfate is called potassium sulfate, and the corresponding one is hydrochloric acid (also called hydrochloric acid). It is called potassium chloride, and the corresponding carbonate is called potassium carbonate, and the phosphate is called potassium phosphate (potassium phosphate, dipotassium phosphate, tripotassium phosphate, potassium polyphosphate, potassium polyphosphate, etc.), and organic acid radicals. The corresponding ones are called organic potassium (potassium formate, potassium acetate, potassium citrate, etc.), and the corresponding silicate is called potassium silicate...
2. Is potassium nitrate the best potash?
A: Non-also! Potassium nitrate is a tool used by water-soluble fertilizer companies to defeat compound fertilizer enterprises in that particular period (the chlorine-based and sulfur-based compound fertilizers are the dominant). It is a typical case of attacking opponents' weaknesses with their own advantages.
3. What potash is best?
A: The quality of fertilizer is difficult to judge, because there are too many factors involved. It is said that public and private women are reasonable and can rank the price (potassium chloride < potassium sulfate < potassium nitrate < potassium carbonate < potassium dihydrogen phosphate <Organic potassium <potassium polyphosphate), so there is a "potassium in my fertilizer is provided by potassium nitrate or potassium dihydrogen phosphate, does not contain chlorine, does not contain sulfur, is the best fertilizer," said "Is it good to drive a good car?" Similarly, is the composition of your expensive fertilizers? Not necessarily. The comprehensive price, nutrient composition, fertilizer properties, application status and other factors, potassium fertilizer is not the best, only the most suitable.
4. What are the advantages and disadvantages of several common potash fertilizers?
A: Water solubility is not mentioned, and now potash can be found to be fully water soluble (unless you don't want to use it).
Potassium nitrate
Advantages: moderate price, good instant solubility, not easy to absorb moisture, neutral fertilizer, providing nitrate nitrogen absorption fast;
Disadvantages: Dissolving heat and lowering the temperature, it is easy to cause the accumulation of nitrite in crops under adverse conditions (forbidden to use in organic agriculture), which is a nitrate, which has certain safety hazards during storage and processing.
Potassium chloride
Advantages: low price, high potassium content, good instant solubility, neutral fertilizer;
Disadvantages: Dissolved heat absorption, easy to absorb moisture, chlorine-containing, chlorine-sensitive crops should be used with care, a large number of long-term application has certain side effects.
Potassium sulfate
Advantages: low price, high potassium content, not easy to absorb moisture, can provide sulfur element;
Disadvantages: Dissolved endothermic, weakly acidic, physiologically acidic fertilizer, the sulfur contained easily combines with calcium to form a slightly soluble calcium sulfate, which can cause acidification and compaction of the soil after application.
Potassium dihydrogen phosphate
Advantages: It is not easy to absorb moisture, and the total content of phosphorus and potassium is high. It is an essential raw material in high-content powder water-soluble fertilizer.
Disadvantages: Dissolved endothermic, weakly acidic, physiologically acidic fertilizer, poor mobility of phosphorus, easy to be fixed, acidification and compaction after application.
Potassium carbonate
Advantages: high potassium content, alkaline, can reduce acidity and release CO2 after application, increase the concentration of CO2 in local microenvironment, and enhance the photosynthesis intensity;
Disadvantages: easy to absorb moisture, easy to flatulence, strong corrosive.
Organic potassium
Advantages: Alkaline fertilizer can reduce soil acidity and provide a large amount of quick-acting carbon fertilizer;
Disadvantages: easy to absorb moisture, high price.
(multiple) potassium polyphosphate
Advantages: high phosphorus and potassium content, dissolution and exothermic, alkaline, good mobility of phosphorus, high utilization rate, acid reduction after application, fluffy soil, improved soil quality, and quick and long-term effect;
Disadvantages: easy to absorb moisture, high price.
After the advantages and disadvantages are finished, the choice is flexibly controlled by the specific circumstances.
5. Do you need to “solve potassium�
A: NO! I often see that some packages have the word "phosphorus and potassium release". This is a kind of inertia. Potassium does not need to be solved because potassium salts are not water-soluble. Well, in the case of sufficient water, can't catch it and solve it? The key to potash is to protect it (envelope or polymer).
6. The more potash is used, the faster the fruit is opened?
A: Look at the situation. There are many factors and elements involved in the expansion of fruit. In many cases, the fruit is not long, not potassium deficiency, but excessive potassium application.
in conclusion:
1. There is no high or low level of potash fertilizer. Only the difference between the potash and the pot. The effect after application should be combined with the specific problems of water, temperature, crop and soil status.
2. In the case of low temperature, high humidity, compaction, acidification and salting, it is recommended to apply potassium carbonate, organic potassium and (poly) potassium polyphosphate, and it is necessary to select a good period and apply it as many times as needed.
3. Potassium is equivalent to the effect of sodium on humans to a certain extent. It is to regulate the osmotic pressure, maintain proper body fluid concentration, and promote the normal metabolism. It is critical to observe the growth of the crop, understand the soil condition, and accurately select the application. (Organic Fertilizer Agrochemicals)
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