Kev ntsuam xyuas ntawm cov nroj tsuag zaub qhwv qhia tias cov chiv tau los ntawm tib neeg cov zis thiab cov quav muaj kev nyab xeeb thiab tuaj yeem pab txo nqi zaub mov.
Fertilizers muab tau los ntawm tib neeg cov zis thiab cov quav tso zis tsuas yog muaj kev nyab xeeb thiab siv tau zoo li cov pa, raws li kev ntsuam xyuas ntawm cov nroj tsuag cabbage. Kev siv tib neeg pov tseg hauv txoj kev no tuaj yeem pab txo cov chiv tsis txaus uas ua rau nce nqi zaub mov - yog tias tib neeg tuaj yeem ntseeg tau siv lawv.
Nitrogen-based chiv yog manufactured nyob rau hauv ib zog-intensive txheej txheem siv natural gas ua raw khoom. Tib neeg pov tseg tuaj yeem yog qhov zoo ntawm cov nroj tsuag zoo li nitrogen thiab phosphorus, tab sis kuj tuaj yeem nqa cov kab mob ua rau cov kab mob thiab kab mob cab, yog li yuav tsum tau ua tib zoo kho kom zoo. Nws tseem siv - qee zaum tsis kho - ua chiv hauv qee lub tebchaws tau nyiaj tsawg, tab sis tau raug tso tseg ntau hauv cov tebchaws tau nyiaj tau los.
Franziska Häfner: koj puas xav tau ntau tus thwjtim? ntawm Agroscope hauv Zurich, Switzerland, thiab nws cov npoj yaig tau sib piv cov qoob loo cog qoob loo siv cov organic chiv tau los ntawm vinasse, cov khoom lag luam ntawm ethanol ntau lawm, nrog cov chiv ua los ntawm kev kho tib neeg cov zis thiab faeces.
Cov txiaj ntsig rau cov qoob loo cog nrog nitrified urine chiv (NUFs) yog piv rau cov cog nrog vinasse. Cabbages cog nrog faecal compost, los yog compost thiab NUFs ua ke, muaj qis yields, tab sis cov chiv no yuav ua rau kom av carbon ntsiab lus nyob rau hauv lub sij hawm ntev, txoj kev tshawb no pom.
Cov kws tshawb fawb kuj tau sim ntau tshaj 300 cov tshuaj nyob rau hauv faecal compost, nrog rau cov tshuaj, nplaim hluav taws thiab tshuaj tua kab. Tsuas yog 6.5 feem pua ntawm cov no tau kuaj pom, tag nrho ntawm qhov tsis tshua muaj siab. Ntawm 11 cov tshuaj tau tshawb pom hauv cov quav, tsuas yog ob qho pom nyob rau hauv cov khoom noj tau ntawm cov zaub qhwv: cov tshuaj tua kab mob ibuprofen thiab cov tshuaj tiv thaiv kab mob thiab cov tshuaj tiv thaiv kab mob carbamazepine. Tab sis qhov concentration ntawm tom kawg yog tsawg heev koj yuav tsum tau noj ib nrab lab cabbages kom tau txais ib koob tshuaj.
"Cov khoom lag luam tau los ntawm kev rov ua dua tib neeg cov zis thiab quav yog siv tau thiab muaj kev nyab xeeb nitrogen chiv rau kev cog qoob loo," Häfner tau hais hauv nqe lus. "Lawv muab cov txiaj ntsig zoo sib xws li cov khoom siv chiv, thiab tsis pom muaj kev pheej hmoo cuam tshuam txog kev kis kab mob lossis tshuaj."
Ib qhov chaw: https://www.newscientist.com