Laboratory;
of;
Crop;
Growth;
Regulation;
Science;
and;
Technology;
Department;
of;
Hebei;
Province&College;
of;
Agronomy;
Agricultural;
University;
of;
Hebei;
Baoding;
071001;
P.R.;
China;
of;
Crop;
Sciences;
Chinese;
Academy;
of;
Agriculture;
Sciences;
Beijing;
100081;
P.R.China;
Abstract;
玉米品种; 根系特征; 吉林省农业科学院; 密度特性; 施氮水平; 根系冗余; 指数方程; 根长密度;