摘要
本文采用回归最优设计方法,研究了不同水平氮、磷及水分对玉米苗期根系生长发育的影响。得出了根干重、根容积、根数与氮肥、磷肥及水分之间拟合度较好的二次回归方程.提出了氮、磷及水分的最佳用量。
The influence of different levelN, P and water on the growth and development of corn root system at seedling stage was studied with the method of regressive, optimum design. Well fitted quadratic regressive equations were obtained between dry weight, volume and number of roots with the levels of N, P and water. The optimum applying amount of N, P fertilizers and water was suggested.
出处
《吉林农业大学学报》
CAS
CSCD
1990年第4期24-26,33,共4页
Journal of Jilin Agricultural University
关键词
玉米
氮肥
磷肥
水分
苗期
根系
root system of corn
N, P and water
quadratic regressive equation
