College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;
College of Resources, Sichuan Agricultural University, Chengdu 611130, P.R.China;