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| 氮磷配施对济麦22花后光合特性及产量的影响 | |
| 引用本文： | 赵海波,林 琪,孙旭生,姜 雯,刘建军,翟延举.氮磷配施对济麦22花后光合特性及产量的影响[J].麦类作物学报,2009,29(4):663-667. |
| 作者姓名： | 赵海波 林 琪 孙旭生 姜 雯 刘建军 翟延举 |
| 作者单位： | 1. 青岛农业大学农学与植物保护学院,山东青岛,266109 2. 山东省农业科学院作物研究所,山东济南,250100 3. 莱州市金海种业有限公司,山东莱州,261400 |
| 基金项目： | 国家自然科学基金，国家科技支撑计划，国家粮食丰产科技工程项目 |
| 摘 要： | 为给小麦高产高效栽培技术提供依据,在大田超高产条件下研究了氮磷配施对超高产小麦济麦22花后光合特性及产量的影响.利用LI-6400便携式光合测定仪,采用开放式气路测定了超高产麦田旗叶的净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)及蒸腾速率(Tr)等相关指标.结果表明,氮磷配施对超高产小麦花后的光合特性及产量有显著的调节作用,花后各处理小麦旗叶的Pn、Gs、Tr、叶面积指数(LAI)、叶绿素含量(SPAD值)等指标呈下降趋势,但与CK处理比较,施肥处理前期下降缓慢,差异达显著水平,N1P2、N2P2及N2P3处理与对照差异极显著.随着施氮和施磷量的增加,旗叶的Pn、Gs及Tr增强, SPAD值升高, LAI增大.但过高的施肥量(P2O5 225 kg/ha)导致小麦生育后期旗叶衰老加快,光合生理指标衰退迅速,穗粒数和千粒重下降显著,最终导致小麦减产.经统计分析得出,氮肥和磷肥间对Pn、LAI及SPAD值有极显著的互作效应.本试验条件下,超高产麦田的适宜施肥量为N 300 kg/ha和P2O5 150 kg/ha. |
| 关 键 词： | 超高产小麦 氮磷配施 光合特性 互作效应 产量 |
Effect of Application of Phosphorus Combined with Nitrogen Fertilizer on Photosynthetic Characteristics after Anthesis and Yield in Jimai 22 |
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| ZHAO Hai bo,LIN Qi,SUN Xu sheng,JIANG Wen,LIU Jian jun,ZHAI Yan ju.Effect of Application of Phosphorus Combined with Nitrogen Fertilizer on Photosynthetic Characteristics after Anthesis and Yield in Jimai 22[J].Journal of Triticeae Crops,2009,29(4):663-667. | |
| Authors: | ZHAO Hai bo LIN Qi SUN Xu sheng JIANG Wen LIU Jian jun ZHAI Yan ju |
| Institution: | 1.College of Agriculture and Plant Protection;Qingdao Agricultural University;Qingdao;Shandong 266109;China;2.Crop Research Institute;Shandong Academy of Agricultural Sciences;Jinan;Shandong 250100;3.Laizhou Jinhai Seed Limited Company;Laizhou;Shandong 261400;China |
| Abstract: | A field experiment was conducted on super-high-yielding conditions to evaluate the effects of application of phosphorus combined with nitrogen fertilizer on photosynthetic characteristics after anthesis and yield in super-high-yielding wheat.The net photosynthesis rate(Pn),intercellular CO2 concentration(Ci),stomatal conductance(Gs) and transpiration rate(Tr) in super-high-yield wheat were measured using Li-6400 portable photosynthesis system with an open flowgas exchange system.The results indicated that a... |
| Keywords: | Super-high-yielding wheat Application of phosphorus combined with nitrogen fertilizer Photosynthetic characteristics Interaction effects Yield |
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