综合农学管理模式对春玉米产量和养分累积特征的影响

袁静超,刘剑钊,梁尧,展文洁,张洪喜,曾子豪,蔡红光,任军

Characteristics of Grain Yield and Nutrient Accumulation for Spring Maize Under Different Agronomic Management Practices

JingChao YUAN,JianZhao LIU,Yao LIANG,WenJie ZHAN,HongXi ZHANG,ZiHao ZENG,HongGuang CAI,Jun REN

表4 不同农学管理模式下春玉米氮素积累及对籽粒的贡献

Table 4 N accumulation and contribution to grain of spring maize under different agronomic management practices

年份 Year 处理 Treatment 积累量 Accumulation of dry matter (kg·hm-2) 积累率 Accumulation rate (%) 对籽粒贡献率 Accumulation rate (%) 转运效率 Translocation rate (%) 吐丝前BS 吐丝后AS 吐丝前BS 吐丝后AS 吐丝前BS 吐丝后AS 2009 CK 46.8c 78.0a 37.5 62.5 19.4 80.6 37.7 FP 115.9b 61.3a 65.4 34.6 54.3 45.7 57.8 Opt-1 141.8a 69.2a 67.2 32.8 57.6 42.4 60.4 Opt-2 159.5a 57.4a 73.5 26.5 67.7 32.3 65.9 Opt-3 144.6a 63.7a 69.4 30.6 61.8 38.2 63.9 2010 CK — — — — — — — FP 149.7b 65.4a 69.6 30.4 52.3 47.7 42.8 Opt-1 170.7a 48.5b 77.9 22.1 70.9 29.1 57.9 Opt-2 186.3a 78.2a 70.4 29.6 57.5 42.5 49.9 Opt-3 166.1a 67.9a 71.0 29.0 59.0 41.0 51.0 2011 CK — — — — — — — FP 113.3bc 130.7a 46.4 53.6 7.4 92.6 8.6 Opt-1 136.5b 117.8b 53.7 46.3 26.5 73.5 28.9 Opt-2 161.0a 102.2b 61.2 38.8 41.9 58.1 42.0 Opt-3 179.4a 75.2c 70.5 29.5 55.7 44.3 46.3