Shouguang has Weilima water-soluble fertilizer, which is used by many growers. What is the effect? The price is so high,

The price is mainly related to the source of potassium and the grade of raw materials used. Some are 6 yuan per catty, while some are more than 12 yuan per catty, or even more than 15 yuan.

Let’s talk about the sources of potassium first. Currently, there are three main sources of potassium for fully water-soluble fertilizers on the market: potassium chloride type, potassium sulfate type, potassium nitrate and potassium dihydrogen phosphate type. Generally speaking, potassium chloride type fertilizers are the lowest priced, followed by potassium sulfate type, and the best ones are potassium nitrate and potassium dihydrogen phosphate type. Because potassium sulfate and potassium chloride fertilizers contain a large amount of sulfate ions and chloride ions, long-term application can easily cause crops to lack the medium element calcium, which can easily lead to fruit cracking, stunted growth points, yellow leaves, and even fruits. Diseases such as navel rot occur. In addition, long-term use of fertilizers containing sulfate ions and chloride ions will greatly reduce the absorption efficiency of nitrate nitrogen. The salt content in the greenhouse soil will be enriched and the soil will become compacted, which is not conducive to the growth of crop roots. With potassium nitrate and potassium dihydrogen phosphate type water-soluble fertilizers, any element of these two types can be absorbed and utilized by crops, without the above symptoms such as salt accumulation, and the corresponding price is also the highest.

Secondly, in terms of the level of raw materials used, high-quality water-soluble fertilizers are generally produced using food-grade and industrial-grade raw materials. Industrial-grade raw materials are several thousand yuan more expensive per ton than agricultural-grade raw materials, and are significantly better than agricultural-grade raw materials in terms of fertilizer nutrient content, water solubility, absorption efficiency, heavy metal content, and product stability. Many bad water-soluble fertilizers are produced using agricultural-grade raw materials, which are low-priced and difficult to guarantee quality. Some unscrupulous manufacturers use fully water-soluble fertilizers to make a fuss and use pure magnesium sulfate, potassium nitrate and other raw materials to make huge profits. In water-soluble fertilizers, the source of phosphorus is very important, and it is also related to the price of fertilizers. This is an important reason why the price of potassium nitrate is much lower than that of fully water-soluble fertilizers.

Finally, based on the formula, according to the technical advantages of each manufacturer, a good water-soluble fertilizer will add some auxiliary combinations to formulate the water-soluble fertilizer, with the purpose of further improving fertilizer utilization and increasing crop yields. and quality. However, many unscrupulous merchants add hormones and other substances to water-soluble fertilizers in pursuit of short-term effects. The ultimate victims are farmers. In this regard, high-quality water-soluble fertilizers generally do not have obvious ammonia smell and pungent hormone smell. It's also critical.

See if it is produced by one of the following manufacturers. The quality of the products of the following manufacturers is still very good.

1. Imported manufacturer products

1. Greencare Company in the United States

2. German Compo Company (a company under the German Potash Group (K S Group) )

3. SQM of Chile

4. Scotts Company of the United States

5. Haifa Chemical Industry Company of Israel

6. Israel Chemical Group (ICL)

7. British Omex Agricultural Fluids Company

8. German Willemo Plant Nutrition Company

9. Belgium Lima Company

10. Italy Valagro SA