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6 拔节期阶段性干旱对小麦主茎及不同蘖位分蘖穗粒数的影响

Table 6 Effects of staged drought at jointing on grain number of main stem and tillers at different positions of wheat (kernels/spike)

年份 Year 品种 Cultivar 处理 Treatment O Ⅰ Ⅱ Ⅲ Ⅰp Ⅳ Ⅱp Ⅰ1 2017-2018 山农29 Shannong29 CK 41.6a 37.4a 34.8a 32.2a 29.5a 27.7a 25.0a 22.8a T1 40.9a 36.8ab 33.9ab 31.5ab 29.2ab 27.4ab 25.7a 23.0a T2 40.6ab 35.3bc 32.4bc 30.1bc 27.8b 26.1b 24.0ab 22.0ab T3 39.4b 35.0c 31.9c 29.6c 27.6b 26.0b 23.6b 21.5b T4 37.3c 31.9d 29.1d 27.3d 25.3c 23.7c 22.2c 20.3c 衡0628 Heng0628 CK 43.5a 40.8a 37.1a 34.8a 32.4a 29.0a 26.5a 25.6a T1 42.4a 39.5ab 36.1ab 33.8ab 31.2ab 27.6ab 26.6a 25.5a T2 41.5ab 38.2b 34.5bc 32.3bc 30.4bc 27.1b 25.2a 24.4a T3 40.3bc 37.7b 34.0c 31.7c 29.6c 26.4b 24.8b 23.5b T4 38.8c 34.4c 31.0d 28.9d 26.9d 24.0c 23.5c 22.2c 2018-2019 山农29 Shannong29 CK 47.7a 43.6a 41.9a 38.9a 34.0a 31.9a 29.2a 27.2a T1 47.2a 43.8a 41.3ab 38.2ab 33.8ab 31.3ab 28.9a 26.9a T2 46.6ab 41.4b 39.3bc 36.7bc 32.1bc 30.1bc 28.4ab 26.3ab T3 45.2b 41.3b 38.0c 35.3c 31.9c 29.2c 27.5b 25.1b T4 42.4c 38.7c 35.6d 33.7d 29.4d 27.9d 26.0c 23.7c 衡0628 Heng0628 CK 49.1a 45.3a 42.4a 39.1a 36.5a 33.1a 31.0a 28.6a T1 48.5a 44.6ab 41.3ab 38.3ab 36.7a 32.5ab 31.1a 28.9a T2 47.1ab 42.8bc 39.6bc 36.6bc 34.0b 30.9bc 29.4ab 27.5a T3 45.6b 42.0c 38.4c 35.8c 33.4b 29.7c 28.5b 26.2b T4 43.0c 39.5d 35.6d 32.4d 30.6c 27.6d 27.2c 24.3c