优化施肥下长江流域冬小麦产量及肥料增产效应
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黄晓萌,刘晓燕,串丽敏,杨兰芳,何萍,王秀斌,仇少君,赵士诚,徐新朋
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Effects of Yield and Fertilization on Yield Increase of Winter Wheat in Yangtze Valley Under Optimized Fertilization
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HUANG XiaoMeng,LIU XiaoYan,CHUAN LiMin,YANG LanFang,HE Ping,WANG XiuBin,QIU ShaoJun,ZHAO ShiCheng,XU XinPeng
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表2 优化施肥和农民习惯施肥产量及利用率比较
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Table 2 Comparison of grain yield and nutrient use efficiency between optimal fertilizer practice and farmers’ practices
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| 参数 Parameter | 优化施肥措施 Optimal practice | 农民习惯施肥措施 Farmers’ practice | | 产量 Yield (t·hm-2) | 6.2±1.6a | 5.7±1.7b | | 施氮量 Fertilizer N application (kg·hm-2) | 154.0±34.0b | 207±69.0a | | 施磷量 Fertilizer P2O5 application (kg·hm-2) | 63.0±14.0b | 83±52.0a | | 施钾量 Fertilizer K2O application (kg·hm-2) | 55.0±10.0b | 82±43.0a | | 氮肥农学效率AE-N Agronomic efficiency of N (kg·kg-1) | 13.4±6.8a | 9.5±4.0b | | 磷肥农学效率AE-P Agronomic efficiency of P (kg·kg-1) | 12.6±9.0a | 5.7±11.1b | | 钾肥农学效率AE-K Agronomic efficiency of K (kg·kg-1) | 9.6±8.3a | 5.2±6.4b | | 氮肥偏生产力PFP-N Partial factor productivity of N (kg·kg-1) | 40.6±18.3a | 28.5±10.2b | | 磷肥偏生产力PFP-P Partial factor productivity of P (kg·kg-1) | 100.5±37.4a | 81.4±36.9b | | 钾肥偏生产力PFP-K Partial factor productivity of K (kg·kg-1) | 113.5±47.1a | 88.1±51.1b |
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