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2 播期对雨养夏玉米生育期气候资源的影响

Table 2 Effects of sowing dates on climatic resources during rain-fed summer maize different growth period

处理 Treatment 品种 Variety 出苗-吐丝期 Emergency to silking stage (E-S) 吐丝-成熟期 Silking to maturity stage (S-M) 全生育期 Total growth period (E-M) Tmax (℃) Tmin (℃) GDD (℃) Rf (mm) Tmax (℃) Tmin (℃) GDD (℃) Rf (mm) Tmax (℃) Tmin (℃) GDD (℃) Rf (mm) SD1 JNK728 31.4b 23.0d 875.9ab 337.7c 29.9a 21.2a 888.5a 162.3ab 30.6a 22.1a 1764.4a 500.0a ZD958 31.5b 23.1d 882.4a 337.7c 29.5a 20.7a 921.1a 162.3ab 30.4a 21.8a 1803.5a 500.0a SD2 JNK728 31.7a 23.6c 880.6a 363.1b 29.2ab 20.4ab 890.0a 136.9ab 30.3a 21.9a 1770.6a 500.0a ZD958 31.7a 23.6c 917.0a 387.0b 28.4ab 19.5b 864.5ab 114.6bc 29.9ab 21.4ab 1781.4a 501.6a SD3 JNK728 31.4b 23.6c 856.3b 386.6b 28.3ab 19.5b 845.9b 114.6bc 29.7ab 21.3ab 1702.2b 501.2a ZD958 31.4b 23.6c 841.3b 383.7b 27.3b 18.7b 857.0b 185.8a 29.0bc 20.8bc 1698.3b 569.5a SD4 JNK728 31.7a 24.0a 892.9a 366.6b 26.7bc 17.9c 762.5c 150.0ab 28.9bc 20.6bc 1655.4c 516.6a ZD958 31.8a 24.1a 877.8a 366.6b 26.1c 17.4c 777.7c 151.2ab 28.5c 20.3c 1655.5c 517.8a SD5 JNK728 31.4b 23.9b 899.4a 427.4a 25.2d 16.5d 682.2d 90.4c 28.0cd 19.8d 1581.6d 517.8a ZD958 31.4b 23.9b 899.4a 427.4a 25.0d 16.1d 685.9d 90.4c 27.8d 19.6d 1585.3d 517.8a