Kusiyana pakati pa dap ndi feteleza wa NPK

Kusiyana kwakukulu pakati pa dap ndi feteleza wa nkhuku ndikuti feteleza wa DAPpotaziyamuPomwe feteleza wa NPK ali ndi potaziyamu.

Kodi feteleza ndi chiyani?

Ma feteleza a DAP ndi magwero a nayitrogeni ndi phophoous yomwe imagwiritsidwa ntchito kuchuluka kwazinthu zaulimi. Gawo lalikulu mu feteleza uyu ndi diammonium phosphate yemwe ali ndi formula (NH4) 2hpo4. Komanso, dzina la Iupac la pagawo ili ndi diammoneum hyphate. Ndipo ndi ammonium ya madzi amtundu wa phosphate.

Mukupanga ma feteleza awa, timachita phosphoroc acid ndi ammonia, omwe amapanga malo otentha omwe amakhazikika, omangidwa ndi omwe amadwala ndi omwe timawakonda kuti azigwiritsa ntchito pafamuyo. Kuphatikiza apo, tiyenera kuchita ndi zomwe zimachitika munthawi yolamulidwa chifukwa zomwe zimagwiritsa ntchito sulfuric acid, zomwe ndizowopsa kuzigwira. Chifukwa chake, kalasi yoyenera ya feteleza iyi ndi 18-46-0. Izi zikutanthauza kuti, ili ndi nayitrogeni ndi phosphorous mu chiwerengero cha 18:46, koma ilibe potaziyamu.

Nthawi zambiri, timafunikira matani pafupifupi 1.5 mpaka 2 mpaka 2 mpaka 2 matani a sulufule (s) kusungunula mwala, ndi matani 0,4 a ammonia popanga nthunzi. Komanso, pH ya chinthu ichi ndi 7.5 mpaka 8.0. Chifukwa chake, ngati tikuwonjezera feteleza pansi, imatha kupanga P ya alkaline ya alkaline yozungulira magalamu 12 omwe amasungunuka m'madzi a dothi; Chifukwa chake wogwiritsa ntchito ayenera kupewa kuwonjezera feteleza wokwera.

Kodi feteleza wa NPK ndi ati?

Feteleza wa NPK ndi zinthu zitatu zogulitsa zinthu zomwe ndizothandiza kwambiri pazinthu zaulimi. Ulemuwu umakhala ngati gwero la nayitrogeni, phosphorous ndi potaziyamu. Chifukwa chake, ndi gwero lofunika pazakudya zoyambirira zitatu zomwe mbewu imafunikira kuti mbewu yake ikule, chitukuko ndi kugwira ntchito koyenera. Dzinalo limafotokozanso za michere yomwe itha kuperekera.

Kuwerengera kwa NPK ndi kuphatikiza kwa manambala omwe amapereka chiwerengero pakati pa nayitrogeni, phosphous ndi potaziyamu operekedwa ndi fetelezawu. Ndi kuphatikiza kwa manambala atatu, olekanitsidwa ndi ma dusi awiri. Mwachitsanzo, 10-10-10-10 ikusonyeza kuti feteleza amapereka 10% ya michere iliyonse. Pamenepo, chiwerengero choyamba chikunena za nayitrogeni (n%), nambala yachiwiri ndi ya phosphous perposer (mu ma p2o5%), ndipo chachitatu ndi).