Shouguang has a water-soluble fertilizer of Wilma, which is used by many growers. What's the effect? The price is so high,

The price level is mainly related to the source of potassium and the level of raw materials used. Some 6 yuan is a kilo, and some are above 12 yuan, or even above 15 yuan.

Let's start with the source of potassium. At present, there are three main sources of fully water-soluble fertilizer potassium in the market: potassium chloride, potassium sulfate, potassium nitrate and potassium dihydrogen phosphate. Generally speaking, potassium chloride fertilizer has the lowest price, followed by potassium sulfate, and the best are potassium nitrate and potassium dihydrogen phosphate. Because potassium sulfate and potassium chloride fertilizers contain a lot of sulfate ions and chloride ions, long-term application will easily lead to calcium deficiency in crops, fruit cracking, stunted growth points, yellowing leaves and even navel rot of fruits. In addition, long-term use of fertilizers containing sulfate ions and chloride ions will greatly reduce the absorption efficiency of nitrate nitrogen, increase the salt concentration in greenhouse soil, and harden the soil, which is not conducive to the growth of crop roots. Using potassium nitrate and potassium dihydrogen phosphate as water-soluble fertilizers, any one of these two elements can be absorbed and utilized by crops, and the above symptoms such as salt accumulation will not occur, and the corresponding price is also the highest.

Secondly, from the level of raw materials used, high-quality water-soluble fertilizers are generally produced with food-grade and industrial-grade raw materials. The price per ton of industrial raw materials is several thousand yuan higher than that of agricultural raw materials, and it is obviously superior to agricultural 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 from agricultural raw materials, which are low in price and difficult to guarantee in quality. Moreover, some unscrupulous manufacturers make a fuss about the use of fully water-soluble fertilizers, and put pure magnesium sulfate, potassium nitrate and other raw materials to make huge profits. In water-soluble fertilizer, the source of phosphorus is very important, which is also related to the price of fertilizer, which is an important reason why the price of potassium nitrate is much lower than that of fully water-soluble fertilizer.

Finally, on the basis of the formula, according to the different technical advantages of various manufacturers, a good water-soluble fertilizer will be made by adding some additives to further improve the utilization rate of fertilizer and improve crop yield and quality. However, in order to pursue short-term effects, many unscrupulous merchants add hormones and other substances to water-soluble fertilizers, but the ultimate victims are farmers. In this regard, it is also important that high-quality water-soluble fertilizers generally do not have obvious ammonia smell and pungent hormone smell.

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

I. Products of imported manufacturers

1, American Green Care Company

2. commscope (a company under the K+S Group)

3. SQM in Chile

4. Scotts Company of America.

5. Haifa Chemical Industry Company of Israel.

6. Israel Chemical Industry Group (ICL)

7. Omex Agricultural Fluid Company, UK.

8. Willemo Plant Nutrition Company of Germany

9. Lima, Belgium

10, Vallaro, Italy.