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3 拔节期阶段性干旱对小麦主茎及不同蘖位分蘖的成穗率的影响

Table 3 Effects of staged drought at jointing on percentage of ear bearing main stem and tillers at different positions of wheat (%)

年份 Year 品种 Cultivar 处理 Treatment O Ⅰ Ⅱ Ⅲ Ⅰp Ⅳ Ⅱp Ⅰ1 2017-2018 山农29 Shannong29 CK 100.00a 100.00a 100.00a 79.37a 68.89a 37.78a 22.22bc 17.78b T1 100.00a 100.00a 100.00a 75.56ab 64.44a 40.00a 33.33a 26.67a T2 100.00a 100.00a 97.78ab 73.33b 55.56b 35.56b 31.11ab 24.44ab T3 100.00a 100.00a 95.56ab 68.89c 53.33b 33.33b 26.67abc 22.22ab T4 100.00a 97.78a 93.33b 66.67c 48.89c 26.67c 20.00c 12.70c 衡0628 Heng0628 CK 100.00a 100.00a 100.00a 75.56a 75.56a 40.00a 20.00a 17.78a T1 100.00a 100.00a 97.78a 73.33a 73.33a 42.22a 26.67a 22.22a T2 100.00a 100.00a 97.78a 68.89b 57.78b 35.56b 24.44a 22.22a T3 100.00a 100.00a 95.24ab 66.67b 53.33bc 33.33bc 22.22a 20.00a T4 100.00a 95.56a 91.11b 66.67b 40.00c 31.11c 17.78a 11.11b 2018-2019 山农29 Shannong29 CK 100.00a 100.00a 98.41a 79.37a 52.38a 36.51a 11.11b 4.76b T1 100.00a 100.00a 96.83ab 77.78a 55.56a 36.51a 20.63a 11.11a T2 100.00a 98.41a 95.24ab 73.33b 50.79b 33.33b 17.46a 7.94ab T3 100.00a 98.41a 93.65ab 69.84b 47.62c 31.75b 12.70b 4.76b T4 100.00a 96.83a 92.06b 55.56c 46.03c 26.98c 7.94c 1.59c 衡0628 Heng0628 CK 100.00a 98.41a 96.83a 71.43a 44.44b 39.68a 12.70b 6.35b T1 100.00a 98.41a 95.24a 68.25ab 49.21a 39.68a 15.87a 12.70a T2 100.00a 95.24a 93.65a 65.08b 44.44b 33.33b 12.70b 9.52b T3 100.00a 95.24a 92.06ab 60.32c 41.27c 26.98c 12.70b 7.94b T4 100.00a 93.65a 90.48b 57.14d 30.16d 20.63d 3.17c 1.59c