机译:长期处理农药和有机肥对东北海伦市粮田重金属的评估
^pLaboratory;
of;
Mollisols;
Agro-ecology,;
Northeast;
Institute;
of;
Geography;
and;
Agro-ecology,;
Chinese;
Academy;
of;
Sciences,;
Harbin;
150081,;
China;
^pof;
Agriculture,;
Northeast;
Agricultural;
University,;
Harbin;
150030,;
China;