Ammonium sulfate sds, hu ua ammonium sulfide, yog ib daim ntawv thov thaum ntxov ntawm cov khoom nitrogen chiv ntau yam, feem ntau hu ua standard nitrogen chiv; Nitrogen cov ntsiab lus 20% ~ 21%.

Cov khoom

① Ammonium sulfate sds yog dawb siv lead ua, nrog me me ntawm impurities, ntau daj.

② Cov khoom zoo ntawm lub cev, tsis muaj dej noo, tsis muaj caking. Txawm li cas los xij, yog tias sulfuric acid ntau dhau ntxiv rau cov txheej txheem tsim khoom lossis cov av ib puag ncig siab, nws yuav yog hygroscopic agglomeration.

③ Ammonium sulfate sds yog yooj yim soluble hauv dej, chiv aqueous tov yog acidic cov tshuaj tiv thaiv.

④ Ammonium sulfate sds muaj cov tshuaj ruaj khov, tsis muaj qhov kub thiab txias, tsis muaj kev puas tsuaj.

⑤ Nyob rau hauv cov xwm txheej alkaline, ammonia volatilization tshwm sim thiab nitrogen ploj. Yog li ntawd, ammonium sulfate sds tsis tuaj yeem tov nrog cov tshuaj alkaline rau kev khaws cia thiab siv.

⑥ Ammonium sulfate sds yog physiological acid chiv, daim ntawv thov mus sij hawm ntev yuav txhim khu cov acidity ntawm cov av. Daim ntawv thov ntawm ammonium sulfide hauv cov av acidic yuav ua rau cov av acidity, yog li cov kua qaub yuav tsum tau siv ua ke, tab sis nws yuav tsum tau muab sau tseg tias txiv qaub thiab ammonium sulfide yuav tsum tau siv cais. Calcareous av muaj ib tug loj npaum li cas ntawm Ca-CO3, daim ntawv thov ntawm ammonium sulphate muaj me ntsis cuam tshuam rau cov av acidity, tab sis yuav ua rau volatilization poob ntawm ammonia, yog li ntawd nws yuav tsum tau siv tob heev.

Daim ntawv thov

① Ammonium sulfate sds yog tsim rau hauv paus chiv, topdressing thiab noob chiv, noob chiv thiab topdressing nyhuv yog zoo dua; Yog hais tias sowing fertilizer yuav tsum qhuav tov, thiab sowing nrog nws; Thaum sib tov cov noob, nws yog qhov zoo tshaj plaws los sib tov cov noob nrog decomposed organic chiv nyob rau hauv ib qho kev faib ua feem, thiaj li yuav tsum tsis txhob ntau tshaj lub zos ntsev concentration thiab cuam tshuam germination.

② Ammonium sulfate sds yog tsim rau txhua hom qoob loo, thiab daim ntawv thov cov txiaj ntsig ntawm cov qoob loo uas nyiam cov sulfur zoo dua.

③ Cov nplej yuav tsum tsis txhob siv rau lub sijhawm ntev. Kev siv lub sijhawm ntev ntawm SO42 - nyob rau hauv cov qoob loo yuav ua rau muaj ntau qhov sib xyaw hauv av, thiab FeS thiab H2S yuav raug tsim nyob rau hauv cov xwm txheej anaerobic, uas yuav cuam tshuam rau kev ua pa ntawm cov cag nplej thiab ua rau cov nplej Hagen.

④ Siv thiab npog av kom tob, tshwj xeeb tshaj yog rau cov av calcareous.

⑤ Raws li cov organic chiv, daim ntawv thov tus nqi ntawm mu yog 15 ~ 25kg.

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