河北省玉米产量灰色理论分析与预测

张文英, 栗秋生, 栗雨勤

Analysis and Forecast of Corn Yield of Hebei Province with Grey System

ZHANGWen-ying, LIQiu-sheng, LIYu-qin

华北农学报 . 2007, (S1): 160 -162 . DOI: 10.7668/hbnxb.2007.S1.039