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)"

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

* 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 
* 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 
* 4-12-0 Nri ọkpụkpụ
* 5-5-6 Ọbara na ọkpụkpụ azụ
* 6-2-0 Milorganite

## Hụkwa

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