How many raw materials are generally used in a water-soluble fertilizer formula?
Water-soluble fertilizer is a quick-acting fertilizer that dissolves rapidly in water and is quickly absorbed by plants. There are many kinds of formulas for it. How many raw materials are used in a water-soluble fertilizer formula? What are the commonly used raw materials?
1. How many raw materials are used in a water-soluble fertilizer formula
Water-soluble fertilizer formulas generally use 3-10 raw materials, and the appropriate raw materials and quantities should be selected for proportioning according to actual needs.
2. Commonly used raw materials for water-soluble fertilizer
1. Calcium nitrate
It contains two nutrient elements, nitrogen and calcium, of which the nitrogen content is 11.9% and the calcium content is 17.0%. It appears as white crystals and is extremely soluble in water.
2. Ammonium nitrate
The nitrogen content in ammonium nitrate is 34%-35%, of which ammonium nitrogen and nitrate nitrogen each account for half. Ammonium nitrate appears as white crystals. Ammonium nitrate is highly hygroscopic and prone to caking, so it should be sealed and placed in a cool place. Ammonium nitrate is combustible and explosive, so it must not be stored together with flammable and explosive substances during storage and transportation.
3. Potassium nitrate
The nitrogen content of potassium nitrate is 13.9% and the potassium content is 38.7%. It can provide both a nitrogen source and a potassium source. It appears as white crystals and is relatively less hygroscopic, though it will also cake when stored for a long time in a relatively humid environment. It has good solubility in water. Potassium nitrate is combustible and explosive, so during storage and transportation, care should be taken not to strike it violently and not to store it together with flammable and explosive materials.
4. Ammonium sulfate
The nitrogen content in ammonium sulfate is 20%-21%, and it is produced by neutralizing NH3 with sulfuric acid. It appears as white crystals and is easily soluble in water. At 20°C, 100 grams of water can dissolve 75 grams of ammonium sulfate. Ammonium sulfate has good physical properties and is not prone to absorbing moisture.
5. Urea
Urea is produced by the reaction of ammonia gas and carbon dioxide at high temperature and high pressure and in the presence of a catalyst. Urea has a very high nitrogen content, reaching 46%, the highest among solid nitrogen fertilizers. Pure urea is white needle-like crystals and is highly hygroscopic.
There are many choices of raw materials for water-soluble fertilizer. The above is a brief introduction to them, for reference only.