Potassium fertilizer, also known as potassium fertilizer. Fertilizers with potassium as the main nutrient generally contain 0.2% to 4.1% of the dry matter weight in plants, second only to nitrogen. Potassium is involved in the activation of over 60 enzyme systems, photosynthesis, transportation of assimilates, carbohydrate metabolism, and protein synthesis during plant growth and development.

Urea is a powerful protein denaturant that acts through both direct and indirect mechanisms [1]. An effective emollient and stratum corneum separating agent [2]. Used as a diuretic. Blood urea nitrogen (BUN) has been used to evaluate renal function [3]. Widely used as a nitrogen source in fertilizers, it is an important raw material in the chemical industry.

Phosphate fertilizer is a fertilizer with phosphorus as the main nutrient. The magnitude (significance) and speed of phosphorus fertilizer efficiency depend on the effective content of phosphorus pentoxide in phosphorus fertilizer, soil properties, fertilization methods, crop types, etc.

Ammonium phosphate is an inorganic compound with the chemical formula (NH4) 3PO4. It is an ammonium salt of phosphate, a white crystalline powder that is easily soluble in water, slightly soluble in dilute ammonia water, and insoluble in liquid ammonia, acetone, ethanol, and ether. It is mainly used as a sprouting agent for sugarcane growth, a wood fire retardant, a water softener for water treatment, a biological culture agent, and an analytical chemical reagent.

Potassium sulfate (chemical formula K2SO4) is a compound formed by the combination of sulfate ions and potassium ions. Its solid is a colorless or white hexagonal or rhombic crystalline or granular powder. Soluble in water, insoluble in alcohol, acetone, and carbon disulfide. It has a bitter and salty taste.

Diammonium hydrogen phosphate, also known as ammonium hydrogen phosphate or ammonium monohydrogen phosphate, is a white crystal with a neutral aqueous solution. The molecular formula is (NH4) 2HPO4, which is soluble in water and decomposes when heated to 155 ℃.
Ammonium dihydrogen phosphate will gradually decompose and release ammonia gas, forming ammonium dihydrogen phosphate.

Phosphate ore is a general term for phosphate minerals that can be economically utilized and is an important chemical mineral raw material. It can be used to produce phosphate fertilizer, as well as to manufacture yellow phosphorus, phosphoric acid, phosphides, and other phosphates, for use in industrial sectors such as medicine, food, matches, dyes, sugar making, ceramics, and national defense. The application of phosphate rock in industry has a history of over a hundred years.

Calcium superphosphate, also known as superphosphate, ordinary superphosphate, superphosphate lime, or superphosphate lime, is a type of phosphate fertilizer. Its main component is calcium dihydrogen phosphate (Ca (H2PO4) 2 · H2O), and its by-product is calcium sulfate (CaSO4). In addition, there are small amounts of free phosphoric acid, free sulfuric acid, dicalcium phosphate, iron phosphate, aluminum phosphate, magnesium phosphate, etc.