Ngaphakathi kwamazinga e-phosphate, kungenzeka ukuthi abalimi abalimekayo bahlangabezane nezidingo ze-phosphate zesitshalo futhi banikeze ngezinto ezanele zemvelo. Lesi yisiphetho sabacwaningi uWieke Vervuurt noMarjoleine Hanegraaf weWUR.
“Ukwesaba ukuthi ubungeke unikeze i-phosphate eyanele nezinto eziphilayo ngaphakathi kwamazinga akunasisekelo,” kusho uHanegraaf. “Kuhle ukucabanga ukuthi ungasiqedela kanjani isithombe. Hlala phambi kwalokho. Kukhona ongakhetha kukho ngomanyolo ohlukile wezinto eziphilayo kanye neminye.
UVervuurt ubesebenza kuphrojekthi yamazinga e-phosphate emazambane. “Ngibale izigameko ezifundeni ezahlukahlukene ngokuya ngezibalo ezivela kuDelphy. Umbuzo wami wokucwaninga ngukuthi ngabe inhlanganisela yohlelo lwesivuno kanye nokufaka umquba kunganikeza i-phosphate eyanele yokutshala isitshalo, kukhuphule amazinga e-phosphate ezingeni elidingekayo nokuthi ngabe lokhu kungenzeka yini ngezinkomba ezintsha nangeseluleko esisha okumele Faka emqondweni. ”
Uhulumeni ulwela ukunciphisa amazinga e-phosphate enhlabathini enothe nge-phosphate, okusho ukuthi ibhalansi ye-phosphate kuleyo nhlabathi kumele yehliswe ngesikhathi sokulinywa. Ngomthamo ophansi we-phosphate, inhlabathi ecebile nge-phosphate izothola ibhalansi entsha futhi izinze lapho. IVervuurt: "Silindele ukuthi izinkampani ezinesilinganiso sokusetshenziswa esiqinile ziqhubeke nokuhlinzeka ngezinto eziphilayo ezanele."
Wabala nge-phosphate etholakalayo emhlabathini kanye nesimo se-phosphate, okunquma ukuthi ukuphakelwa kungaba yini. Umthetho usebenzisa i-P-CaCl 2 kanye nenombolo ye-P-Al. Isimo se-phosphate siboniswa ekuhlaziyweni kwenhlabathi ne-P-Al kanye ne-phosphate etholakala ngqo kulesi sitshalo nge-P-CaCl 2 . IVervuurt isebenzise izinkampani eziyizibonelo ezingamashumi amabili ezisabalele izwe lonke ukuziguqula zibe yisibonelo.
Ukuze ugcine lokho kutholakala kwezinto eziphilayo kuphakeme ngokwanele, inkampani enezindinganiso eziqinile kuzodingeka yenze ukudideka okuningi futhi ikhethe izinhlobo zikamanyolo eziletha izinto eziningi eziphilayo mayelana nokutholakala kwe-phosphate. Umlimi ngeke akhethe isisombululo esishibhile kodwa esingcono. IVervuurt: "Yilokho uDelphy eluleka ngakho abalimi."
Ngokusho kweHanegraaf, umlimi angalwela izindlela ezigcina isitshalo sitholakala i-phosphate ephakeme ngokwanele, njenge-pH value enhle (i-asidi). Ucabanga ukuthi kubalulekile ukunaka imiphumela yokwehlisa umthamo we-P noma, ngakolunye uhlangothi, ukwanda esimweni sesimo esiphansi se-phosphate. “Senza ucwaningo emkhakheni wezindawo ezinotshani eLelystad naseZegveld nasemhlabathini olimekayo eLelystad, Marknesse naseWijster. Lokhu kukhombisa ukuthi okuqukethwe kwendaba engokwemvelo akwehli nge-equilibrium phosphate kokukhulelwa. Isithombe jikelele phakathi kwekhwalithi yenhlabathi kanye nesivuno sesitshalo kufanele silunge. ”
Izithelo eziphakeme zifaka isandla ezinsaleleni ezengeziwe zezitshalo kanye nezimpande ezisele enhlabathini. Ngokusho kukaHanegraaf, imiphumela yocwaningo iqinisekisa ukuthi ikhwalithi yenhlabathi iyagcinwa ngokufaka umquba wokulingana. “Ukunikeza i-phosphate encane akuholeli ngokuzenzakalela ezintweni eziphilayo ezingaphansi kwenhlabathi. Kukhona ukukhetha kwama-organic fertilizer kanye nabathuthukisi bomhlabathi. Yenza okuthile ngalokho bese ubala ngaphansi kwesihlahla sikaKhisimusi ukuthola ukuthi ungawunakekela kanjani umhlabathi kangcono. ”