We often use urea, ammonium sulfate, ammonium chloride, ammonium bicarbonate, all belong to nitrogen fertilizer. Taking the most common urea on the market as an example, the state has relatively strict regulatory requirements for urea, including relevant enforcement standards and relevant identification requirements. When you buy, you can check whether the outer packaging bag meets the following points, as long as there is a non-compliance should be particularly cautious:

We often the most phosphate fertilizer than superphosphate. GB20413-2006 is the national implementation standard for superphosphate? The outer packaging is not written with this national standard, or the production license number is not written, or it is a fake. There is no doubt that you must not buy it. In addition, for the phosphate fertilizers sold on the market, those named "polypeptide phosphorus", "calcium zinc phosphate", "humic acid calcium phosphate", "organic active phosphorus", free acid calcium ", etc., are basically not necessarily It is a real agricultural phosphate fertilizer, or it is suspected of misleading consumption, and everyone must not buy it.

The commonly used potash fertilizers mainly include potassium chloride, potassium sulfate, potassium nitrate, potassium magnesium sulfate, potassium dihydrogen phosphate, etc. We must also pay attention to whether the national standards are implemented and whether the production license number is marked, otherwise there will be problems with fertilizers. For example, all potassium sulfate with Q/LJH002-2002 in implementation standard is fake potassium sulfate with substandard quality, because Q/LJH002-2002 is an enterprise standard, not a GB20406-2006 national standard.

      In addition, any potash fertilizer marked with total nutrition, Israel, the United States, Germany, medium and trace elements, compound type, improved type, chelated type, polypeptide type, or type I or type II must not be purchased. It is very likely that there are very serious quality problems, or there is a suspicion of exaggerating and misleading consumption.

At the same time, for fruit farmers and vegetable farmers who use more potassium dihydrogen phosphate, the country does not register liquid potassium dihydrogen phosphate, so all liquid potassium dihydrogen phosphate is fake.

The national implementation standard for diammonium phosphate is GB10205-2009 (the minimum phosphorus content of qualified products shall not be less than 39.0). Any product that is not marked with this national standard or whose phosphorus content is less than 39% is fake. In addition, for fertilizer names such as "American technology" and "diammonium organic phosphate" or the implementation standard is written as Q/CGYZ004-2006 (this is the enterprise standard), do not buy it, otherwise it is easy to be cheated.

Compound/mixed fertilizer can be said to be the most commonly used type of fertilizer. Whether it is compound fertilizer, compound fertilizer or blended fertilizer (BB fertilizer), the packaging bag must have specific and clear fertilizer name, trademark, specification grade, net content, nutrient content, manufacturer's address, telephone number and batch number, production license number, fertilizer registration number and implementation standard.

For the packaging bags marked with various kinds of technologies from which country, which country, which country, which country, which international technology, and which scientific research institute research and development, what high efficiency or complete nutrition, and compound/mixed fertilizer with resistance to what diseases and insects, there are basically problems such as exaggerated publicity and vague sales, which are suspected of misleading consumption. Attention should be paid when purchasing.

At present, in terms of national standards, the national standard for compound fertilizer is GB15063-2009, the national standard for organic-inorganic compound fertilizer is GB18877-2009, and the national standard for blended fertilizer is GB21633-2008. For fertilizer packaging bags, the standards implemented are not the above national standards, or there is no fertilizer registration certificate number and production license number, or the license number and registration certificate number are incomplete, you must not buy them.

For arable land and crops, organic fertilizer is the best type of fertilizer, and it is also recommended that you increase the application of organic fertilizer as much as possible.

However, the organic fertilizer on the market is mixed, and many illegal enterprises use industrial waste and rotten residue as raw materials to produce organic fertilizer.

When buying organic fertilizer, it is also necessary to check the outer packaging bag to see if the fertilizer name, trademark, specification grade, net content, nutrient content, manufacturer's address, telephone number and batch number, fertilizer registration certificate number and implementation standard are fully marked.

7. microbial fertilizer

Microbial fertilizer is also a very good fertilizer, which can be divided into three categories: compound microbial fertilizer, bio-organic fertilizer, and agricultural microbial inoculants. The corresponding national standards are bio-organic fertilizer NY/T798-2004, NY884-2012, and GB20287-2006.

The organic fertilizer market is also quite chaotic. For organic fertilizers that do not implement national standards, do not have a fertilizer registration certificate number, or have a total nitrogen, phosphorus and potassium content standard of more than 40%, they are basically fake and inferior fertilizers, and everyone must not buy them.

8. water soluble fertilizer

The water-soluble fertilizer on the market can be divided into six categories: large amount of element water-soluble fertilizer, medium element water-soluble fertilizer, trace element water-soluble fertilizer, water-soluble fertilizer containing humic acid, water-soluble fertilizer containing amino acid and organic water-soluble fertilizer.

The first five types of national standards are NY1107-2010, NY2266-2012, NY1428-2010, NY1106-2010, and NY1429-2010. For the last organic water-soluble fertilizer, the implementation is not a national standard, but an enterprise standard.