| 温明星，陈爱大，李东升，曲朝喜，蔡金华.追氮量和种植密度对镇麦168群体质量、产量和加工品质的调控效应[J].麦类作物学报,2014,34(4):528 |
| 追氮量和种植密度对镇麦168群体质量、产量和加工品质的调控效应 |
| Regulating effect of Nitrogen Topdressing and Planting Density on Population Quality, Yield and Processing Quality of Zhenmai 168 |
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| DOI：10.7606/j.issn.1009-1041.2014.04.15 |
| 中文关键词: 镇麦168 施氮量 种植密度 群体质量 产量 加工品质 |
| 英文关键词:Zhenmai 168 Nitrogen topdressing Planting density Population quality Yield Processing quality |
| 基金项目:镇江市农业科学研究所基金项目(ZJS2010005)；江苏省农业科技自主创新资金项目(CX（13）2022)；镇江市科技支撑计划（农业）项目(NY2011018)；江苏省科技支撑计划（农业）项目(BE2011306)；镇江市科技支撑计划（农业）项目(NY2012024)；产学研联合创新资金—前瞻性研究项目（BY2013069）。 |
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| 中文摘要: |
| 为给小麦品种镇麦168优质高产栽培中氮肥和种植密度管理提供参考，在基施有机肥15 000 kg·hm-2、复合肥（N∶P∶K=15∶15∶15）375 kg·hm-2条件下，设置240、285和330 kg·hm-2三个追施氮肥水平以及135万、180万、225万、270万和330万株·hm-2五个种植密度（基本苗）水平，研究了追氮量和种植密度对该品种群体质量、产量和加工品质的影响。结果表明，在240～285 kg·hm-2范围内，增加追氮量可明显提高镇麦168的籽粒产量、千粒重、成穗率、沉降值和弱化度，但当追氮量达到330 kg·hm-2时，有效穗数、穗粒数、籽粒产量、容重、出粉率、吸水率、面团稳定时间增加不显著，千粒重明显降低。在135万～270万株·hm-2范围内，增加种植密度可显著提高有效穗数、籽粒产量、容重、面团形成时间、稳定时间和弱化度，而当种植密度达到330万株·hm-2时，有效穗数、穗粒数、千粒重、籽粒产量、成穗率、容重、面团形成时间、稳定时间和弱化度显著降低，分蘖期和拔节期群体叶面积指数、越冬期和拔节期干物质积累量以及出粉率、沉降值、吸水率增幅不明显。综合来看，镇麦168高产优质栽培的适宜追氮量和密度分别为285 kg·hm-2和270万株·hm-2。 |
| 英文摘要: |
| In order to provide reference for the use of nitrogen fertilizer and density in high quality and yielding cultivation of winter wheat Zhenmai168, on the basis of 15 000 kg·hm-2 organic fertilizer, 375 kg·hm-2 compound fertilizer, experiment with three level of nitrogen topdressing (240, 285 and 330 kg·hm-2) and five level of planting density (135×10, 180×10, 225×10, 270×10 and 330×10 plants·hm-2) were conducted. The effects of nitrogen topdressing and planting density on the population quality, yield and processing quality of Zhenmai 168 were studied. The results showed that the grain yield, 1 000 grain weight, spike rate, sedimentation value and weakening level increased significantly, with nitrogen application rate increased from 240 kg·hm-2 to 285 kg·hm-2. While nitrogen application rate increased to 330 kg·hm-2, there were no obvious effects observed on the effective spike, the grains per spike, the grain yield as well as bulk density, flour yield, water absorption and stability time, especially the 1 000 grain weight decreased obviously. The effective spike, grain yield, bulk density, formation time and stability time along with weakening level were all increased simultaneously,along with the number of basic seeding increased from 135×10 plants·hm-2 to 270×10 plants·hm-2. However, with the number of basic seedlings increased to 330×10 plants·hm-2, the effective spike, grains per spike, 1 000 grain weight, grain yield, spike rate, bulk density, formation time, stability time and weakening level were all reduced remarkably. Growth of LAI at tillering and jointing stage, dry matter dynamic accumulation at wintering period and jointing stage, flour yield, sedimentation value together with water absorption were all not improved obviously. Generally speaking, the suitable combination of nitrogen application amount and planting density for high output and excellent quality of Zhemai 168 were 330 kg·hm-2 and 270×10 plants·hm-2, respectively. |
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