College of Agronomy and Resource and Environment Tianjin Agricultural University Tianjin 300384 P.R.China;
College of Engineering and Technology Tianjin Agricultural University Tianjin 300384 P.R.China;
College of Agronomy and Resource and Environment Tianjin Agricultural University Tianjin 300384 P.R.China;
College of Agronomy and Resource and Environment Tianjin Agricultural University Tianjin 300384 P.R.China;
College of Agronomy and Resource and Environment Tianjin Agricultural University Tianjin 300384 P.R.China;
black soldier fly; heavy metal; mobility; speciation; pig manure;