Akara fatịlaịza

Ọtụtụ mba ahaziela akara fatịlaịza iji gosi ọdịnaya ha nwere nnukwu nri.[1][2] Mgbakọ akara aha na-ahụkarị, akara NPK ma ọ bụ N-P-K, na-egosi ọnụọgụ kemịkalụ nitrogen, phosphorus, na potassium.

 Mgbakọ ndị a na-ahụkarị maka akara 

 Akara nyocha NPK 
A na-akpọkarị fatịlaịza n'ọnụọgụ atọ, dịka ọ dị na 18-20-10, na-egosi ọdịnaya ọdịnaya nke isi macronutrients nitrogen (N), phosphorus (P), na potassium (K), n'otu n'otu.

N'ụzọ doro anya karị, ọnụọgụ mbụ ("N uru") bụ pasentị nke nitrogen elemental site na ịdị arọ na fatịlaịza; ya bụ, oke nke nitrogen ugboro 100. Nọmba nke abụọ ("P uru") bụ pasent site na ịdị arọ nke phosphorus pentoxide P2O5. Nọmba nke atọ ("K uru") bụ ihe yiri potassium oxide K2O.

Dịka ọmụmaatụ, fatịlaịza 15-13-20 ga-enwe 15% site na ịdị arọ nke nitrogen, 13% site na ịdịarọ nke P2O5, 20% site na ịdịrọ nke K2O, na 52% nke ụfọdụ inert ingredients.
 Mgbakọ ndị ọzọ a na-akpọ aha 
Na U.K., ụkpụrụ ịdebanye aha fatịlaịza na-enye ohere maka ịkọpụta ụmụ irighiri ihe mejupụtara nke phosphorus na potassium. Iwu ndị ahụ kwuru na a ga-eme nke a na ntinye aka mgbe ụkpụrụ N-P-K ọkọlọtọ gasịrị, dịka na "15-30-15 (15-13-13)"UK Fertilizers Regulations 1990, Schedule 2 Part 1, Para. 7.

N'Australia, a na-eji usoro "N-P-K-S" emepụta fatịlaịza macronutrient, nke na-eji akụkụ dị iche iche karịa ụkpụrụ N-P-C ma na-agụnye ọnụọgụ sulfur (S) dị na fatịlaịtị. 

Fertilizers nwere macronutrients ndị ọzọ (S, Ca, Mg) nwere ike ịgbakwunye ọnụọgụ ndị ọzọ na N-P-K iji gosipụta ọnụ ọgụgụ ahụ. A na-akọkwa ọnụọgụ ndị ọzọ n'ụdị oxide mass fraction. Dịka ọmụmaatụ, fatịlaịza Polish nke akpọrọ "NPK (Ca,S) 4-12 (14-29) " nwere ihe ruru 14% soluble calcium oxide na 29% ngụkọta sulfur trioxide. 

 Ịgbanwe nyocha nke ihe na-edozi ahụ ka ọ bụrụ ihe mejupụtara ya 
Ụkpụrụ dị na akara fatịlaịza NPK nwere njikọ na njupụta (site na ịdị arọ) nke phosphorus na potassium dị ka ndị a:

 P2O5 nwere 56.4% elemental oxygen na 43.6% elemental phosphorus site na ịdị arọ. Ya mere, pasentị phosphorus nke fatịlaịza bụ 0.436 okpukpu nke uru P ya.
 K2O nwere 17% oxygen na 83% elemental potassium site na ịdị arọ. Ya mere, pasentị potassium elemental bụ 0.83 okpukpu nke uru K.

Uru N na akara NPK na-anọchite anya pasentị nitrogen site na ịdị arọ, yabụ ọ dịghị mkpa ka a gbanwee ya.

Ya mere, dịka ọmụmaatụ, fatịlaịza 18−51−20 nwere site na ịdị arọ

 18% nke nitrogen elemental,
 0.436 × 51 = 22% elemental phosphorus, na
 0.83 × 20 = 17% elemental potassium.

Dị ka ihe atụ ọzọ, fatịlaịza Sylvite bụ mineral na-apụta n'okike nke nwere ọtụtụ potassium chloride, KCl. Pure potassium chloride nwere otu atọm potassium (nke ịdị arọ ya bụ 39.09 g / mol) maka atọm chlorine ọ bụla (nke ịdịarọ ya bụ 35.45 g / mol). Ya mere, KCl dị ọcha bụ 39.09/ (39.09 + 35.45) = 52% potassium na 48% chlorine site na ịdị arọ. Ya mere, ọnụ ọgụgụ K ya bụ 52/0.83 = 63; ya bụ, fatịlaịza nke na-enweta potassium ya niile site na K2O ma nwee otu ihe potassium dị ka KCl dị ọcha ga-abụ 63% K2O. N'ihi ya, a ga-akpọ fatịlaịza KCl dị ọcha 0-0-63. Ebe ọ bụ na sylvite nwere ihe ndị ọzọ na-enyeghị N, P, ma ọ bụ K, a na-akpọkarị ya 0-0-60.

 Ụkpụrụ NPK maka fatịlaịza azụmahịa 

 Ụkpụrụ NPK maka fatịlaịza dị iche iche NPK (Fertilizer) chemicalland21.com accessed 15 December 2022 

 15-0-0 Calcium nitrate
 21-0-0 Ammonium sulphate
 30-0-0 ruo 40-0-0 Sulfur-coated urea (nwere onwe nwayọ) 
 31-0-0 Isobutylidenediurea (~90% nwayọ ntọhapụ) 
 33-0-0 ruo 34-0 Ammonium nitrate
 35-0 Ureaform (~85% na-eji nwayọ na-ahapụ ureaformaldehyde) 
 40-0-0 Methylene ureas (~70% nwayọ ntọhapụ)
 46-0-0 Urea (U-46) 
 82-0-0 Ammonia na-enweghị mmiri
 10-34-0 ruo 11-37-0 Ammonium polyphosphate
 11-48-0 ruo 11-55-0 Monoammonium phosphate
 18-46-0 ruo 21-54-0 Diammonium phosphate
 7-7-7 Growmore 
 13-0-44 Potassium nitrate
 0-17-0 ruo 0-22-0 Superphosphate (Monocalcium phosphate monohydrate na gypsum) 
 0-44-0 ruo 0-52-0 Triple superphosphate (Monocalcium phosphate monohydrate) 
 0-0-22 Potassium magnesium sulfate (K-mag) 

 Ọnụ ọgụgụ NPK maka fatịlaịza ndị a na-egwupụta 

 11-8-2 ruo 16-12-3 guano nnụnụ Bat and seal guano are lower in fertilizer value than bird guano. see Guano
 0-3-0 ruo 0-8-0 Raw Phosphate Rock (ga-abụ 0-34-0 ma ọ bụrụ na ọ na-agbaze) 
 0-0-60 Potassium chloride
 0-0-19 KainiteNdị Kainite
 0-0-17 Carnallite

 Ụkpụrụ NPK maka fatịlaịza na ndị ọzọ 

 9-0-0 nsị mmiri ara ehi 
 1-0-1 nsị ịnyịnya 
 3-2-2 nsị ọkụkọ from "Average total N, ammonium N, phosphate and potash content of manure at the time of land application" in Animal Manure As a Plant Nutrient Resource, Bulletin ID-101 (Reviewed 02/05/01), Cooperative Extension Service, Purdue University. West Lafayette, IN 47907 
 4-12-0 Nri ọkpụkpụ
 5-5-6 Ọbara na ọkpụkpụ azụOrganic Fish, Blood and Bone Feed – Harrod Horticultural (UK) www.harrodhorticultural.com accessed 15 December 2022
 6-2-0 Milorganite

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