What is inorganic fertilizer? Which are inorganic fertilizers?

What is inorganic fertilizer? What are inorganic fertilizers? Please give an introduction to inorganic fertilizer, also known as chemical fertilizer. This type of fertilizer is characterized by relatively simple nutrients, most of which are a chemical fertilizer containing only one or two fertilizers. It is easy to decompose when applied to water and quickly takes effect, so it is also called "quick-acting fertilizer". include nitrogen fertilizer, phosphorus and bile fertilizer, potassium fertilizer and calcium fertilizer. Belonging to inorganic fertilizer are: First, nitrogen fertilizer nitrogen fertilizer can be directly absorbed by phytoplankton, aquaculture often used to promote the growth and reproduction of phytoplankton, improve the feed of filter-feeding fish and tilapia. Fish commonly used nitrogen fertilizer ammonium bicarbonate, ammonium sulfate, ammonium nitrate, ammonium chloride and urea. These nitrogen fertilizers, which exist in ammonium form, are easy to volatilize into gases when exposed to alkali and reduce fertilizer efficiency, so they cannot be mixed with alkaline fertilizers. Nitrogen fertilizer is also quick-acting fertilizer, suitable for topdressing, can also be used as base fertilizer. As base fertilizer, 1.5~2 kg can be applied per mu, and the amount of topdressing is 1/4~1/3 of base fertilizer. Second, phosphate fertilizer commonly used phosphate fertilizer has calcium superphosphate and phosphate rock powder. Ponds are generally deficient in phosphorus, phosphorus application to promote the growth of plankton and aquatic organisms have a significant role. Calcium superphosphate is a water-soluble quick-acting fertilizer containing 16%~18% available phosphorus. Phosphate rock powder is crushed from phosphate rock, phosphorus compounds are mainly difficult to decompose fluorapatite, phosphorus availability is poor, fertilizer efficiency is slow. When calcium superphosphate is used as topdressing, the dosage per mu is 0.25 kg. Also can not be mixed with alkaline fertilizer application, otherwise it will play a chemical role, resulting in insoluble tricalcium phosphate and reduce fertilizer efficiency. Common potassium fertilizers include potassium chloride, potassium sulfate, plant ash, etc., which can be dissolved in water. Under normal circumstances, the potassium in the pond water is relatively sufficient, so the amount of potassium fertilizer does not need to be too much. The amount of base fertilizer per mu is approximately 0.5 kg; the amount of topdressing is 1/4~1/3 of base fertilizer. Plant ash contains more potassium and strong alkalinity, which cannot be ignored when mixed with other fertilizers. When using plant ash, it is best to moisten the ash first and then disperse it evenly in the pond. It should also be pointed out that plant ash should be kept dry, and if it is rained, its potassium content will be greatly lost. Usually potassium fertilizer is mixed with nitrogen fertilizer and phosphorus fertilizer, and the ratio of nitrogen, phosphorus and potassium fertilizer in the mixed fertilizer is 2:2:1. Four, calcium fertilizer commonly used calcium fertilizer has quicklime, hydrated lime and so on. Calcium fertilizer has many functions, such as disinfection, neutralization of acidic water and provision of calcium needed by aquatic organisms. Among them, quicklime is the most commonly used and most suitable, which is convenient and economical. It can be used as pond disinfectant, base fertilizer and topdressing. 5. Compound fertilizer generally refers to chemical fertilizer containing three or two elements of nitrogen, phosphorus and potassium and processed by chemical methods. Containing two elements called binary compound fertilizer, such as ammonium phosphate, potassium nitrate, etc., containing three kinds of called ternary compound fertilizer, such as potassium nitrophosphate, etc. In addition, it also contains three elements and some other elements of the multi-element compound fertilizer. Compound fertilizer can meet the needs of plants for a variety of nutrients, its fertilizer efficiency is better than other fertilizers, and storage, transportation is also more convenient. Click for more compound fertilizer application techniques Click for more fertilizer application techniques