Is potassium nitrate a compound fertilizer? In fact, it belongs to binary compound fertilizer, which is a compound fertilizer without chlorine, potassium and nitrogen.
Potassium nitrate is generally colorless, transparent prismatic crystal or powder, and is easily soluble in water. Its solubility in water increases with the rise of water temperature, is not easy to deliquesce, and is insoluble in ethanol and ether. The total contents of plant nutrient elements potassium and nitrogen in potassium nitrate are relatively high, with the highest of more than 60%, which has good fertilizer efficiency and utilization value.
Potassium nitrate is a physiologically alkaline fertilizer. Potassium nitrate is easy to move after being applied to the soil, so it is suitable for topdressing, especially for middle and late topdressing or for crops damaged by frost. Since potassium nitrate contains potassium oxide 3.4 times its nitrogen content, it is often used as high concentration potassium fertilizer in agriculture. Most potassium nitrate will be used in tobacco, which can not only have the advantages of fast fertilizer absorption, strong fertilizer effect and promoting early seedling growth, but also increase the yield and quality of tobacco, which can play a very important role in tobacco. In addition, potassium nitrate also has a good topdressing effect on grapes, tomatoes and other fruits and vegetables.
Potassium nitrate can not only be applied alone, but also mixed or combined with nitrogen fertilizer such as ammonium sulfate, which can not only enhance the utilization value of fertilizer efficiency, but also eliminate some side effects of potassium nitrate. Therefore, potassium nitrate is an ideal compound fertilizer.