不同季节播种玉米的氮肥生产力和利用率

张石宝　李树云　尹树华　胡丽华　普琼芬　

Productivity and Utilization Efficiency of Fertilizer-Nin Different Sowing - Season Maize (Zea mays)

ZHANG Shi-Bao, LI Shu-Yun, YIN Shu-Hua, HU Li-Hua, PU Qiong - Fen

Plant Diversity . 2002, (01): 1 -3 .