Characteristics and functions of common fertilizers

Compound fertilizer nutrient complete, can be divided into binary and ternary; most physical properties are good, easy to transport and storage. Three elements with diversity, flexible use is the key; recently promoted formula fertilizer, has developed a variety of. (1) Monoammonium phosphate Monoammonium phosphate is acid, forty-two phosphorus undeca nitrogen. The soil of our country is much partial alkali, suit urea to mix ammonium. Nitrogen and phosphorus complement each other to increase fertilizer efficiency, save labor and money and high yield. To benefit farmers more, use it to produce formula fertilizer. (2) Diammonium phosphate Diammonium phosphate is alkaline, forty-six phosphorus and eighteen nitrogen. Domestic diammonium content is low, forty-five phosphorus nitrogen thirteen. It is reasonable to apply acid land, alkali land is not as good as ammonium. It is best to mix urea with application, and increase production with application. (3) Ammonium phosphate monoammonium diammonium phosphate, forty-six phosphorus fifteen nitrogen. Granules are neutral gray, alkali can also release nitrogen. Adapt to all kinds of soil, available base fertilizer and topdressing. The most suitable crops are wheat and rice, as well as soybeans and corn. (4) The production of liquid ammonium phosphate from liquid ammonium phosphate has a simple process and low cost. Nitrogen has seven phosphorus twenty, soluble in water partial acid. Suspension performance is better, no corrosion is not precipitated. It has wide adaptability and bright future, and nitrogen should be increased when it is applied. (5) Ammonium metaphosphate ammonium metaphosphate is neutral, and its nature becomes weakly acidic. It is reasonable to apply acid field to promote its hydrolysis into ammonium. Seventy-five phosphorus sixteen nitrogen, nitrogen should choose physiological acid. Granules are gray without agglomeration, storage and transportation are convenient. (6) Nitrophosphate nitrophosphate is acidic, and the compound composition has phosphorus and nitrogen. 26 N 13 P, most moderate grade wheat field. Because it contains nitrate nitrogen, it is best applied to dry fields. Ammonia can also be released in case of alkali, and storage and transportation should be strictly controlled. (7) Ammoniated calcium superphosphate calcium superphosphate ammoniated, physical and chemical properties of large changes. Neutralizes most of the free acids, convenient for application, storage and transportation. Soluble in water to neutral, added ammonia by 3%. Do not mix alkaline substances, soybean green manure favorite. (8) Ammonium sulfate ammonium sulfate, acid, eicosaphosphorine to hexadecylamine. Soluble in water, fast fertilizer, containing ammonium sulfate and ammonium phosphate. The soil in our country is alkaline, and the benefit of application is obvious. It is suitable for all kinds of crops and is used for increasing nitrogen in wheat. (9) Potassium dihydrogen phosphate compound fertilizer potassium dihydrogen phosphate, adapted to root spraying. With more than 100 grams of fertilizer per mu, mature seeds ahead of time. It contains fifty-two phosphorus and thirty-four potassium. It is soluble in water and weakly acidic. It can also be used for seed dipping. (10) Calcium magnesium phosphorus potassium calcium magnesium phosphorus potassium new fertilizer, gray powder alkaline. Potassium contains two phosphorus seventeen, but also contains calcium and magnesium multi-element fertilizer. Insoluble in water soluble weak acid, adapt to calcium deficiency acid field. It is best to stack before use to improve fertilizer efficiency and obtain high yield. (11) potassium metaphosphate imitation potassium phosphate compound fertilizer, weak acid gray particles. Phosphorus content up to 59, potassium content up to 37. It can dissolve weak acid and slightly dissolve water, and is most suitable for acid application. Nitrogen fertilizer should be added to the fertilizer because of lack of nitrogen. (12) potassium nitrate potassium nitrate, called fire nitrate, white crystal properties are good, if mixed with carbon and sulfur, made of gunpowder flammable explosion. Soluble in water is neutral, can be used to dip seed dressing. Forty-four potassium and thirteen nitrogen can increase yield by topdressing outside roots. (13) Nitrogen and potassium mixed fertilizer ammonium sulfate mixed potassium sulfate, produced by ammonia-alkali method, cetylpotassium to tetradecylamine, easily soluble in water physiological acid. Adapt to all kinds of soil, storage and transportation application Mo Yu alkali. Due to the lack of phosphorus in nutrients, increased application of phosphorus is critical. (14) ammonium phosphorus potassium ternary compound fertilizer ammonium phosphorus potassium, ammonium sulfate potassium two add; there are also added ammonium sulfate, the product can be divided into one, two, three; No. 1 nitrogen potassium each twelve, phosphorus content up to 24. Number 2 nitrogen ten potassium fifteen, phosphorus up to hydrogen twenty. No.3 nitrogen and potassium are all ten, phosphorus content as high as the whole thirty. According to crop fertilizer needs, multi-use fruit trees economically. (15) Adding potassium to phosphorus nitrate can produce four kinds of potassium nitrate; one is frozen potassium nitrate, the content of three elements is not lower; nitrogen fifteen phosphorus sixteen, and seventeen potassium oxide. The second is potassium nitrate carbonate, containing nitrogen fifteen potassium eighteen; phosphorus has nine more than citric acid solution, acid soil is very suitable; carbon dioxide instead of sulfuric acid, reduce the cost of low price. Third, potassium nitrate phosphate, three seventeen fertilizer effect. The above three kinds contain chlorine, do not use tobacco cane potato. Fourth, there is no chloronitrate phosphorus potassium, sulfur potassium instead of potassium chloride; due to high production costs, cash crops only use it. (16) urea-potassium-phosphorus fertilizer urea-potassium phosphorus adjustment ternary, nitrogen, phosphorus and potassium nutrients complete; production is potassium nitrate, fused urea and diammonium. It contains fourteen phosphorus, fourteen potassium, twenty-eight nitrogen, four nitrate nitrogen, six ammonium nitrogen, eighteen amide. Because all three nitrogen is complete, fruit tree economic field is reused; because nitrogen and phosphorus are two to one, wheat field is more moderate. Mineral fertilizers are applied early, often lime and gypsum. There are brine and agricultural salt, ferrous sulfate called black alum. It is mainly used to regulate soil and improve soil physical and chemical properties. Beneficial reproduction of microorganisms, directly or indirectly available. (1) Lime lime can be divided into raw and hydrated, adapted to improve acidic soil. The southern part of the country is ashy red and yellow soil, and the northeastern part is acidic white pulp. Application not only increases calcium, but also reduces pests and diseases. Mu Shi master 100 kg, Mo mixed calcium human urine feces. (2) Gypsum Gypsum is acidic in nature and is used to improve alkaline soil. Whether it is raw or ripe, phosphorus stone contains calcium and sulfur. 50,000 grams per mu of dry land, deep ploughing, fine fertilizer and soil improvement. Paddy field needs three kilograms per mu, mainly for dipping seedling roots. (3) Brine water is relatively complete in nutrients, potassium, sodium, calcium, magnesium and nitrogen. The dark brown liquid is heavier than water and suitable for sandy soil and paddy field. Fifty kilograms of fertilizer per mu increased the yield of all kinds of crops. Brine paste black brown crystalline, soluble in water alkaline strong. (4) Agricultural salt agricultural salt components sodium chloride, but also boron iodine sulfur magnesium potassium. White crystals neutral, sodium for magnesium potassium crops. Rice, wheat and soybeans love sodium, as do beets and flax. It only needs five kilograms per mu, and the mixed urine fertilizer effect is large. (5) Medical stone Medical stone, nutrient complete, ancient medicine can be health care; Compendium of Materia Medica has records, authentic origin in Songshan. Recently, it is mostly used as feed, and it can be used as fertilizer to increase production; adding sulfuric acid before fertilization can solve the problem of crop absorption.