大气CO2与温度升高对北方冬小麦旗叶光合特性、碳氮代谢及产量的影响
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宗毓铮,张函青,李萍,张东升,林文,薛建福,高志强,郝兴宇
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Effects of Elevated Atmospheric CO2 Concentration and Temperature on Photosynthetic Characteristics, Carbon and Nitrogen Metabolism in Flag Leaves and Yield of Winter Wheat in North China
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ZONG YuZheng,ZHANG HanQing,LI Ping,ZHANG DongSheng,LIN Wen,XUE JianFu,GAO ZhiQiang,HAO XingYu
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表9 CO2浓度和气温升高对小麦产量构成的影响
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Table 9 Effects of elevated CO2 and increased temperature on the yield components of wheat
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| 年份 Year | 处理 Treatment | 单穗粒数 Grain number per spike | 单位面积穗数 Spikes number (No./m2) | 千粒重 1000-seed weight (g) | | 2017-2018 | CK | 22.7±1.7ab | 327.1±9.8ab | 45.44±1.84a | | EC | 25.3±1.2a | 349.0±23.2a | 44.45±0.66a | | ET | 21.1±1.0b | 292.7±16.4b | 43.68±0.74a | | ECT | 23.9±0.3ab | 344.8±7.3a | 44.55±0.66a | | 2019-2020 | CK | 45.0±1.4a | 230.0±21.9c | 43.53±1.12a | | EC | 46.3±6.7a | 371.5±23.4a | 38.39±4.00a | | ET | 37.2±4.4a | 254.8±11.6bc | 37.00±1.55a | | ECT | 39.8±2.1a | 297.2±12.9b | 36.32±0.64a | | P-value | Pyear | 0.00 | 0.00 | 0.00 | | PT | 0.03 | 0.08 | 0.05 | | PCO2 | 0.21 | 0.00 | 0.23 | | PT×CO2 | 0.83 | 0.16 | 0.21 |
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