Recently, when I went to the countryside to investigate, I often heard farmers' friends ask whether compound fertilizer is a compound fertilizer. Due to various reasons, when farmers buy fertilizer, it is generally believed that compound fertilizer is compound fertilizer, but it is not. In the late 1970s and early 1980s, the production of compound fertilizer was in the initial stage, and the basic fertilizer was used as raw material for pellet production, extrusion and powder or granular blending. At that time, some professionals opposed this practice. They believed that the fertilizer produced by this physical method could not be called "composite fertilizer."
In 1994, when the country first formulated standards, the term “complex fertilizer†was used, which means that such compound fertilizers are prepared by physical mixing to distinguish them from obvious chemical (chemical) effects or Compound fertilizer made by ammoniation granulation process, common compound fertilizer mainly includes diammonium phosphate, monoammonium phosphate, potassium nitrate, nitrophosphate fertilizer and potassium dihydrogen phosphate.
These compound fertilizers contain elements required by two or more crops. The nutrient content is high, mostly granular, generally low in moisture absorption, non-caking, and good in physical properties, which can improve the poor traits of some elemental fertilizers and facilitate storage. Particularly conducive to mechanized fertilization. They can be used as both seed fertilizers and base fertilizers and top dressings.
The compound fertilizer production process is relatively simple, usually refers to urea, superphosphate, potassium chloride, etc. through mechanical mixing processing or using a simple chemical reaction to obtain ammonium phosphate, and then blending urea and potassium chloride into, The fertilizer produced is not uniform in nutrients and can only be called compound fertilizer. These compound fertilizers generally do not require expensive and complicated chemical production equipment during the production process.
The compound fertilizer is made by chemical reaction in the production process. Completing this process requires complicated technology and expensive chemical equipment. The compound fertilizer produced has uniform nutrient content and uniform particle size.
At present, in the agricultural resources market, the phenomenon of compounding the face of compound fertilizer into a compound fertilizer is everywhere, and farmers are also difficult to identify. Many manufacturers show that the product is a compound fertilizer on the production license, while the package is marked with compound fertilizer, due to packaging. Inconsistent with the license, this situation should be investigated.
In order to cater to the needs of consumers, some merchants are subjectively willing to label compound fertilizers made from various blending processes as compound fertilizers, which has no benefit for optimizing quality. On the contrary, it increases the pressure on environment and food safety, making the government and the market Supervision is more difficult and more important.
Both the compound fertilizer and the compound fertilizer perform different standards. China's quality and technical supervision laws and regulations stipulate that the product standard for the production of compound fertilizer is the mandatory national standard code number GB15063-1994 "Complex Fertilizer". The production of compound fertilizers is carried out by the production enterprises and submitted to the provincial quality and technical supervision bureau for the record of the enterprise standards. The nutrient content and utilization rate of the two are different.
The nutrients of the compound fertilizer synthesized by chemical reaction are generally fixed, and the nitrogen, phosphorus and potassium are each 15%, the release is uniform, and the utilization rate is high. The concentration of nutrients in the physically mixed compound fertilizer is low, and the total nutrient is generally not more than 30%, and the release is uneven, and the effect is poor. Any compound with a marking standard of GB15063-1994 and a total nutrient of no more than 30% is a compound fertilizer.
The form of supervision of both compound fertilizer and compound fertilizer is different. China's quality and technology supervision departments implement the supervision and management of the "Industrial Product Production License" for enterprises that produce compound fertilizers; and the production of compound fertilizers does not require this certificate. Therefore, the words of compound fertilizer are printed on the packaging bag of compound fertilizer, which is really illegal. The broad masses of peasants should be vigilant and guard against being fooled. Invoices should be requested when purchasing fertilizers, in preparation for future complaints to the quality and technical supervision department.
This article URL: The difference in the nature of compound fertilizer and compound fertilizer can not be equivalent
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