华北冬小麦开花期补灌的增产效应及其影响因素
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张经廷,吕丽华,董志强,张丽华,姚艳荣,申海平,姚海坡,贾秀领
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Yield-increasing effect of supplementary irrigation at winter wheat flowering and its influencing factors based on water and nitrogen coupling in north China
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Jing-Ting ZHANG,Li-Hua LYU,Zhi-Qiang DONG,Li-Hua ZHANG,Yan-Rong YAO,Hai-Ping SHEN,Hai-Po YAO,Xiu-Ling JIA
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表2 拔节-开花期两种降水情景下冬小麦产量性状及其对水氮的响应
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Table 2 Winter wheat yield traits and their responses to water and nitrogen under two precipitation scenarios from jointing to flowering stage
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处理
Treatment | 拔节-开花期有效降水量不大于25.3 mm
Effective precipitation from jointing to flowering stage ≤ 25.3 mm | 拔节-开花期有效降水量大于25.3 mm
Effective precipitation from jointing to flowering stage > 25.3 mm | 穗数
Spike number (×104 hm-2) | 穗粒数
Grain number
per spike | 千粒重1000-grain weight (g) | 生物量
Biomass
(kg hm-2) | 收获指数Harvest index | 穗数
Spike number (×104 hm-2) | 穗粒数
Grain number
per spike | 千粒重1000-grain weight (g) | 生物量
Biomass
(kg hm-2) | 收获指数Harvest index | | W1 | | | | | | | | | | | | N0 | 424.3 d | 24.9 b | 40.8 b | 8313.3 d | 0.43 b | 517.8 c | 27.3 b | 45.0 a | 8427.2 d | 0.44 a | | N60 | 558.0 c | 29.8 a | 41.0 b | 10239.6 c | 0.44 ab | 582.3 b | 29.7 a | 44.6 a | 12894.2 c | 0.45 a | | N120 | 567.0 c | 29.9 a | 38.7 c | 12175.3 b | 0.46 a | 674.9 a | 30.9 a | 42.4 ab | 14392.3 b | 0.47 a | | N180 | 625.1 ab | 28.4 ab | 38.4 c | 11987.4 b | 0.46 a | 659.6 a | 30.9 a | 42.1 ab | 14983.4 a | 0.47 a | | N240 | 617.3 ab | 29.2 a | 38.9 c | 12319.4 b | 0.45 a | 671.3 a | 31.2 a | 41.9 b | 15150.3 a | 0.46 a | | N300 | 604.8 ab | 30.1 a | 38.2 c | 12233.0 b | 0.45 a | 676.0 a | 30.3 a | 41.7 b | 15163.7 a | 0.46 a | | 均值 Average | 556.1 | 28.7 | 39.3 | 11211.3 | 0.45 | 630.3 | 30.0 | 42.9 | 13501.9 | 0.46 | | W2 | | | | | | | | | | | | N0 | 523.6 c | 25.6 b | 44.9 a | 8542.6 d | 0.43 b | 540.9 c | 26.4 b | 44.6 a | 8745.8 d | 0.44 a | | N60 | 589.3 bc | 31.5 a | 43.6 a | 10443.1 c | 0.45 a | 534.9 c | 27.7 b | 44.8 a | 12561.9 c | 0.45 a | | N120 | 618.3 ab | 32.2 a | 41.4 b | 14885.7 a | 0.47 a | 684.6 a | 30.8 a | 44.0 a | 14722.9 ab | 0.48 a | | N180 | 663.2 a | 32.1 a | 41.5 b | 15145.5 a | 0.46 a | 685.5 a | 30.5 a | 43.3 a | 15059.6 a | 0.47 a | | N240 | 662.7 a | 32.9 a | 41.3 b | 14665.9 a | 0.46 a | 684.5 a | 32.4 a | 43.3 a | 15244.9 a | 0.47 a | | N300 | 667.0 a | 32.6 a | 41.5 b | 15143.2 a | 0.45 a | 696.8 a | 31.3 a | 43.0 a | 15307.8 a | 0.46 a | | 均值 Average | 620.7 | 31.1 | 42.3 | 13137.7 | 0.45 | 637.8 | 29.8 | 43.8 | 13607.1 | 0.46 |
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