播期对华北平原雨养夏玉米产量形成与资源利用效率的影响

梁茜, 吴清山, 葛均筑, 吴锡冬, 杨永安, 侯海鹏, 张垚, 马志琪

Effects of Sowing Date on Rain-Fed Summer Maize Yield Formation and Resource Utilization in North China Plain

Liang Qian, Wu Qingshan, Ge Junzhu, Wu Xidong, Yang Yong’an, Hou Haipeng, Zhang Yao, Ma Zhiqi

表4 播期对雨养夏玉米干物质积累的影响

Table 4 Effects of sowing date on dry matter accumulation of rain-fed summer maize g/株 g/plant

处理 Treatment 品种 Variety 吐丝期Silking stage 收获期Maturity stage 茎Stem 叶Leaf 总重Total 茎Stem 叶Leaf 籽粒Grain 总重Total SD1 JNK728 48.3±4.5bc 27.8±1.7a 76.1±6.2bc 72.7±4.9b 25.6±1.7cd 162.9±11.1ab 261.2±17.8bc ZD958 42.9±1.8d 18.5±1.9d 61.4±3.7e 68.9±4.9bc 24.4±1.7cd 149.6±10.6bc 242.9±17.2cd SD2 JNK728 62.9±1.5a 27.6±1.2a 90.5±2.7a 96.0±5.0a 27.7±1.4bc 177.2±9.2a 300.9±15.6a ZD958 58.9±1.2a 25.0±2.9bc 83.9±4.1ab 91.6±4.9a 32.3±1.7ab 153.8±8.3c 277.8±15.0ab SD3 JNK728 62.2±7.5a 26.8±3.1ab 89.0±10.6a 92.1±6.3a 34.0±2.3a 159.5±10.8b 285.5±19.4ab ZD958 50.1±12.1b 25.0±3.9bc 75.1±16.0bc 93.6±5.4a 23.3±1.4de 164.9±9.6ab 281.8±16.3ab SD4 JNK728 45.8±9.1cd 24.3±2.3c 70.1±11.4cd 64.5±3.1c 29.7±1.4b 148.7±7.1bc 242.9±11.7cd ZD958 44.8±11.3d 26.0±4.8ab 70.9±16.1cd 64.4±3.2c 28.4±1.4bc 137.9±6.8cd 230.7±11.3d SD5 JNK728 34.2±5.9e 18.4±2.6d 52.6±8.5f 62.7±3.9d 24.5±1.5cd 135.7±8.5d 222.9±14.0d ZD958 35.3±2.2e 16.8±0.2e 52.1±2.4f 53.8±3.5d 15.2±1.0f 103.8±6.8e 172.8±11.3e