What are the most common potash fertilizers on the market? How to use more scientific?

Potassium nitrate is a nitrogen-containing and potassium-containing neutral potassium fertilizer, containing nitrate nitrogen and 46 potassium, which is better than potassium sulfate in terms of water solubility and absorption utilization rate of fertilizer, and potassium nitrate is not easy to cause soil acidification, but what is the role of potassium fertilizer containing nitrate. The first is to promote the activation of enzymes. The second is to increase photosynthesis.

The third is to promote the metabolism of sugar. Fourth, promote protein synthesis. Fifth, enhance the stress resistance of crops.

Sixth, increase production and quality.

<> potassium sulfate. Potassium sulfate is a sulfate-based potassium fertilizer, which does not contain chlorine or only contains low chlorine, which is basically the most adaptable elemental potassium fertilizer. 70% of the domestic potassium sulfate is converted from potassium chloride.

Therefore, the ** of potassium sulfate is relatively higher. In the early stage, farmers will use a large amount of manure and organic fertilizer as base fertilizer, resulting in excessive nitrogen fertilizer, crop growth is too fast, the stalk is young and tender, and it is easy to cause growth, and bacteria are also easy to invade, which will cause marrow necrosis, stem base rot, flower and fruit drop, downy mildew.

Potassium sulfate has a potassium content of more than 48% and can be used as basal fertilizer, top dressing, seed fertilizer and foliar fertilizer. If potassium sulfate is applied for a long time in acidic soil, it must be used with alkaline fertilizers, such as calcium, magnesium phosphate fertilizer, phosphate rock powder, etc., which can prevent soil compaction and acidification. The active ingredient content of potassium chloride is generally 50-60%, which is a physiological acid fertilizer, which can be used as base fertilizer, top dressing and root top dressing.

In coastal areas, it is necessary to avoid application, and the use of varieties such as Fuji and Red Star that are susceptible to manganese damage (apple rough skin disease) is prohibited.

The main role of nitrogen fertilizer is to promote the flourishing of trees, increase chlorophyll and enhance vegetative growth. If there is too much nitrogen fertilizer, the plant will have soft tissues, long stems and leaves, and will be susceptible to pests and diseases, resulting in reduced cold tolerance. Plants that lack nitrogen fertilizer will be thinner, and nitrogen fertilizer is the fertilizer that crops absorb the most during growth, and it is also a necessary fertilizer for crops.

The application of nitrogen fertilizer is mainly used to improve seedlings, which can help crops to photosynthesize and produce chlorophyll. In general, if the crop is dwarf and the leaves are yellow.

The common ones are potassium sulfate, potassium chloride, potassium cellar ash and plant ash, which are very easy to use, according to different situations to choose, ordinary plants use plant ash on the line, and it is better to use potassium chloride if there is a problem.

Now the commonly used potash fertilizers on the market are potassium chloride, potassium sulfate, potassium nitrate, potassium dihydrogen phosphate, potassium phosphite and so on. Potassium chloride is the cheapest from the point of view, and the water solubility is also very good, which is most suitable for field use. When used in the middle and late stages, the combination of phosphate fertilizer can sweeten and color the fruit and ripen quickly.

Potash is the most important of the many elements we usually use. Potassium fertilizer is generally used in the middle and late stages, which can be combined with phosphate fertilizer to sweeten and color the fruit and ripen quickly.

So what kind of potash fertilizer is best? In fact, the main thing is to look at crops (such as watermelon, rice, sweet potato, corn, peach trees, etc.), the time and way of use, to determine what kind of potassium fertilizer is the best, today I will explain to you the rational use of potassium fertilizer.

There are only a few potash fertilizers commonly used in the market nowFor example, potassium chloride, potassium sulfate, potassium nitrate, potassium dihydrogen phosphate, potassium phosphite and so on

1. Potassium chloride

Potassium chloride is the cheapest from the point of view, and the water solubility is also very good, which is most suitable for field use. Because the salt content in potassium chloride is too high, most of the fields pass through the rainforest, and the salt tolerance is relatively good, and the use of potassium chloride is the most cost-effective.

2. Potassium sulfate

Potassium sulfate is generally used in cash crops and is slightly higher than potassium chloride**. Under normal circumstances, the same ton of potassium sulfate is about 200 yuan higher than potassium chloride**. However, potassium sulfate is an acidic fertilizer, and large amounts of it can also cause soil acidification and root malabsorption.

3. Potassium nitrate

Potassium nitrate is particularly water-soluble, and is generally suitable for top dressing, but the nitrate nitrogen content in potassium nitrate is too high, and the content is.

Although the content of potassium fertilizer is 46% is already very high, the use of potassium nitrate in large quantities will cause rapid expansion of the fruit in the early stage, but it is difficult to color the fruit in the later stage, which is also the biggest disadvantage of Qiwei potassium nitrate.

Potassium nitrate is not recommended for later ripening when using local purity for colored crops, and potassium nitrate is not recommended for later maturity.

4. Potassium dihydrogen phosphate

The use of potassium dihydrogen phosphate in agriculture. There are many ways to do it. Most of them are mainly flushing and foliar spraying. Potassium dihydrogen phosphate is very high in both phosphate and potassium fertilizers.

Potassium dihydrogen phosphate contains 52% of phosphate fertilizer, and 34% of potassium fertilizer is also a fertilizer with good water solubility. However, the dissolution of potassium dihydrogen phosphate has a certain saturation, and it needs a large amount of water to melt, and the dissolution time is slow.

The best fertilizer on the market today is flash dissolved potassium dihydrogen phosphate, which is puffed potassium dihydrogen phosphate, which is more soluble in water and more easily absorbed by the root system.

5. Potassium phosphite

Potassium phosphite is an emerging fertilizer in recent years, because the trivalent phosphorus in potassium phosphite will have a bactericidal effect when converted into 5-valent phosphorus, so it has certain benefits for plant disease prevention.

However, the conversion rate of phosphate fertilizer is low, and the utilization rate of phosphate fertilizer is low. When using potassium phosphite, we must pay attention to the temperature problem, because too high temperature is easy to produce pesticide damage.

As for the small amount of potassium fertilizer that we encounter in the planting process,For example, organic potassium, potassium carbonate, potassium polyphosphate, potassium pyrophosphate, etc。In general, it is rarely used, so I won't explain them one by one today. Everyone still chooses the right potash fertilizer according to their own plants and usage.

Potash fertilizers on the market mainly include potassium nitrate, potassium sulfate, potassium dihydrogen phosphate, potassium chloride, etc., what are the characteristics of various potassium fertilizers, and what are their "little tempers", only by figuring out their differences, can they be better utilized.

Potassium nitrate contains nitrate nitrogen, containing 46% potassium, which is a chemical and physiological neutral fertilizer with good water solubility. Long-term application will not lead to soil acidification. It is suitable for the spring type from the swelling period of young fruits of vegetables and fruit trees to the early stage of coloring, which can promote the expansion of pulp cells.

Because it contains nitrate nitrogen, it is not recommended to use it in the later stage of coloring, which is easy to cause regreening.

Potassium dihydrogen phosphate contains 52% phosphorus and about 34% potassium, which is a chemically neutral and physiologically neutral fertilizer with good water solubility. Generally, before and after flowering, it can be used to promote root germination and flower bud differentiation, and provide energy for flowering and fruit setting. The use of coloring period can promote powder coloring and increase the sweetness of fruits; The use of fruits after picking can promote the aging of branches and improve the degree of lignification of fruits.

Potassium chloride potassium chloride appearance is white or light yellow crystal, containing iron salt is red, soluble in water, is a high concentration of fast-acting potassium fertilizer, can be used as base fertilizer, top dressing, but the scope of application is relatively small, pay special attention to chlorine-sensitive crops, such as watermelon, grapes, potatoes, etc.

Potassium sulfate Potassium sulfate has the appearance of white crystals or colored crystals or granules, which is suitable for various crops and can be used as base fertilizer, top dressing and root top dressing.

The Lop Nur potassium sulfate collected by SDIC Senyou is a very good potash fertilizer, which can not only increase the yield of crops, but also improve the soil situation. Highly recommended.

1. Natural potassium fertilizers include egg shells, bone meal, banana peels and rice water. Among them, rice washing water contains a lot of potassium, and when using it, it should be fermented first to prevent the heat generated during the fermentation process of rice washing water from burning the roots of the plant. Take a clean, empty bottle and fill it with rice water.

After installation, the bottle cap is directly screwed and fermented, and it can be used after 20-30 days of fermentation, and it can be poured directly.

2. There are many kinds of natural potassium fertilizers, such as plant ash, carnallite, potassium nitrate, potassium rock salt, potassium magnesium salt, etc. Potassium is the main nutrient element for plant growth, and potassium is dissolved in plant juice in an ionic state. In the process of plant growth and development, potassium is involved in the activation of more than 60 enzyme systems, the transportation of assimilation products, photosynthesis, carbohydrate metabolism, protein synthesis and other processes.