稻茬小麦氮高效品种产量构成和群体质量特征
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丁永刚,李福建,王亚华,汤小庆,杜同庆,朱敏,李春燕,朱新开,丁锦峰,郭文善
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Characteristics of yield components and population quality in high-nitrogen- utilization wheat cultivars
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Yong-Gang DING,Fu-Jian LI,Ya-Hua WANG,Xiao-Qing TANG,Tong-Qing DU,Min ZHU,Chun-Yan LI,Xin-Kai ZHU,Jin-Feng DING,Wen-Shan GUO
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表2 不同氮效率品种类型间产量及其构成因素的差异
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Table 2 Differences in yield and its components among different NUR groups
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年份 Year | 地点 Site | 品种类型 Variety type | 氮肥表观利用率 NUR (%) | 籽粒产量 Grain yield (kg hm-2) | 穗数 Spike number (×104 hm-2) | 每穗粒数 Grains per spike | 千粒重 1000-grain weight (g) | 2016-2017 | 扬州 Yangzhou | 氮高效NUR-H | 52.4±1.9 a | 7439±321 a | 362±23 a | 44.8±5.2 a | 48.6±4.3 a | 氮中效 NUR-M | 43.2±1.7 b | 6530±425 b | 330±29 a | 43.7±6.1 a | 47.4±4.5 a | 氮低效 NUR-L | 34.9±2.3 c | 5410±662 c | 294±25 b | 42.3±4.2 a | 45.7±3.6 a | 范围 Range | 31.4-55.8 | 4158-7949 | 253-400 | 38.2-50.3 | 41.1-57.3 | 平均值 Mean | 43.55 | 6470 | 331 | 43.0 | 47.3 | 睢宁 Suining | 氮高效 NUR-H | 52.4±1.4 a | 9064±230 a | 513±40 a | 40.0±1.8 a | 46.6±2.6 a | 氮中效 NUR-M | 46.2±2.4 b | 8564±425 a | 500±36 ab | 40.1±4.3 a | 45.2±1.9 a | 氮低效 NUR-L | 36.6±2.1 c | 7084±767 b | 434±53 b | 37.4±3.3 a | 47.1±2.1 a | 范围 Range | 33.5-53.5 | 6186-9370 | 373-563 | 33.1-48.8 | 41.6-50.5 | 平均值 Mean | 44.44 | 8252 | 485 | 39.4 | 46.0 | 2017-2018 | 扬州 Yangzhou | 氮高效 NUR-H | 50.8±0.7 a | 6964±578 a | 433±29 a | 41.6±0.9 a | 39.9±1.7 a | 氮中效 NUR-M | 42.8±2.2 b | 6397±462 ab | 402±20 ab | 43.5±3.3 a | 39.2±3.1 a | 氮低效 NUR-L | 37.1±2.3 c | 5806±478 b | 383±24 b | 42.6±3.2 a | 38.0±2.7 a | 范围 Range | 38.9-53.6 | 4878-7373 | 324-454 | 36-47.5 | 34.2-44.4 | 平均值 Mean | 39.7 | 6070 | 393 | 42.8 | 38.5 | 睢宁 Suining | 氮高效 NUR-H | 51.3±0.8 a | 7097±101 a | 505±2.8 a | 37.6±0.7 a | 41.3±0.6 a | 氮中效 NUR-M | 41.7±1.6 b | 7114±373 a | 495±25 a | 36.6±3.7 a | 42.0±3.5 a | 氮低效 NUR-L | 31.9±4.1 c | 6249±473 b | 444±38 b | 36.9±1.5 a | 39.7±3.2 a. | 范围 Range | 5237-7860 | 33.5-53.5 | 394-545 | 32.8-43.9 | 35.4-46.5 | 平均值 Mean | 6533 | 36.27 | 463 | 37.0 | 40.8 |
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