拔节期阶段性干旱对小麦茎蘖成穗与结实的影响

李萍,尚云秋,林祥,刘帅康,王森,胡鑫慧,王东

Effects of Drought Stress During Jointing Stage on Spike Formation and Seed Setting of Main Stem and Tillers of Winter Wheat

LI Ping,SHANG YunQiu,LIN Xiang,LIU ShuaiKang,WANG Sen,HU XinHui,WANG Dong

表8 拔节期阶段性干旱对小麦主茎及不同蘖位分蘖单穗产量的影响

Table 8 Effects of staged drought at jointing on grain yield of main stem and tillers at different positions of wheat (g/stem)

年份 Year 品种 Cultivar 处理 Treatment O Ⅰ Ⅱ Ⅲ Ⅰp Ⅳ Ⅱp Ⅰ1 平均单穗产量 Average yield per spike 2017-2018 山农29 Shannong29 CK 1.75a 1.54a 1.49a 1.21a 1.14a 1.03a 0.91a 0.86a 1.38a T1 1.73a 1.51ab 1.42ab 1.16ab 1.10ab 1.00ab 0.94a 0.85a 1.33ab T2 1.69ab 1.48bc 1.39bc 1.14bc 1.07bc 0.97bc 0.86ab 0.83ab 1.30bc T3 1.63b 1.42c 1.32c 1.11c 1.03c 0.93c 0.83b 0.78b 1.26c T4 1.55c 1.34d 1.03d 0.95d 0.91d 0.82d 0.78c 0.75c 1.15d 衡0628 Heng0628 CK 1.65a 1.44a 1.37a 1.18a 1.05a 0.94a 0.88a 0.76a 1.28a T1 1.67a 1.47a 1.38a 1.18a 1.07a 0.96a 0.90a 0.79a 1.30a T2 1.59ab 1.33b 1.26b 1.09b 0.97b 0.86b 0.83ab 0.73ab 1.21b T3 1.52b 1.28b 1.21b 1.04b 0.92b 0.81b 0.75b 0.66b 1.16b T4 1.38c 1.16c 0.92c 0.91c 0.83c 0.74c 0.70c 0.59c 1.03c 2018-2019 山农29 Shannong29 CK 1.97a 1.75a 1.62a 1.37a 1.29a 1.06a 0.93a 0.86a 1.58a T1 1.98a 1.72ab 1.59ab 1.36ab 1.29ab 1.05ab 0.91a 0.85a 1.54ab T2 1.92ab 1.67bc 1.53bc 1.30bc 1.22bc 1.00bc 0.89ab 0.82ab 1.50bc T3 1.85b 1.60c 1.46c 1.23c 1.17c 0.95c 0.85b 0.79b 1.45c T4 1.77c 1.54d 1.23d 1.14d 1.04d 0.89d 0.79c 0.76c 1.37d 衡0628 Heng0628 CK 1.86a 1.69a 1.54a 1.32a 1.17a 0.97a 0.88a 0.80a 1.50a T1 1.91a 1.74a 1.55a 1.35a 1.17a 0.99a 0.91a 0.81a 1.50a T2 1.80ab 1.60b 1.41b 1.20b 1.08b 0.90b 0.84ab 0.76ab 1.41b T3 1.73bc 1.54b 1.34b 1.15b 1.03b 0.86b 0.80b 0.73b 1.35b T4 1.67c 1.47c 1.15c 1.04c 0.95c 0.80c 0.72c 0.69c 1.31c