[1]Institute of Cereal and Oil Crops Hebei Academy of Agriculture and Forestry Sciences Shijiazhuang050035 P.R.China;
[2]Xingtai Academy of Agriculture Sciences Xingtai054000 P.R.China;
[3]College of Agriculture Northeast Agricultural University Harbin150030 P.R.China;
cytochrome P450; Zea mays L.; malathion; nicosulfuron; herbicide metabolism;