Article(id=1256541017709339067, tenantId=1146029695717560320, journalId=1256314692575182859, issueId=1256541004312731999, articleNumber=null, orderNo=null, doi=10.16035/j.issn.1001-7283.2026.01.016, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1735488000000, receivedDateStr=2024-12-30, revisedDate=1740412800000, revisedDateStr=2025-02-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1777512324025, onlineDateStr=2026-04-30, pubDate=1771084800000, pubDateStr=2026-02-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1777512324025, onlineIssueDateStr=2026-04-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1777512324025, creator=13701087609, updateTime=1777512324025, updator=13701087609, issue=Issue{id=1256541004312731999, tenantId=1146029695717560320, journalId=1256314692575182859, year='2026', volume='42', issue='1', pageStart='1', pageEnd='270', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1777512320831, creator=13701087609, updateTime=1777512485032, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1256541693206213337, tenantId=1146029695717560320, journalId=1256314692575182859, issueId=1256541004312731999, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1256541693210407642, tenantId=1146029695717560320, journalId=1256314692575182859, issueId=1256541004312731999, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=125, endPage=132, ext={EN=ArticleExt(id=1256541019479335377, articleId=1256541017709339067, tenantId=1146029695717560320, journalId=1256314692575182859, language=EN, title=Effects of Nitrogen Fertilizer on Maize Root Growth and Nitrogen Metabolism under High-Density Planting, columnId=null, journalTitle=Crops, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The effects of nitrogen (N) application on maize yield, root distribution, and N metabolism were analyzed under high-density planting by using the maize cultivar Xianyu 335 as material, setting up a conventional density treatment of 6.75×104 plants/ha (D1) and a high-density treatment of 8.25×104 plants/ha (D2), and applying N at five rates (0, 160, 220, 280, and 340 kg N/ha) per density treatment. The results indicated that with the increasing of N application rate, the maize yield showed a trend of increasing and then decreasing. The yield of D2 treatment was significantly higher than that of D1 treatment and the combination of high-density planting and optimized N application (160-220 kg N/ha) increased the yield by 39.1%-51.8% compared to conventional management. The optimized combination of N rates and planting densities increased root length, root length density, root surface area, root volume, specific root length, as well as the activities of glutamate synthase and glutamine synthetase in roots. The two enzyme activities were positively correlated with root growth distribution. In conclusion, an application of 160-220 kg/ha of N at a planting density of 8.25×104 plants/ha is recommended. This combination enhances nitrogen metabolism enzyme activities, promotes root growth, and increases soil nutrient uptake, thereby improving maize yield. This can serve as a high-yield maize planting model for the Guanzhong region of Shaanxi.
, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Wenli Zhou, Miaoyi Hao, Renhe Zhang), CN=ArticleExt(id=1256541034448806477, articleId=1256541017709339067, tenantId=1146029695717560320, journalId=1256314692575182859, language=CN, title=高密度种植下氮肥对玉米根系生长及氮代谢的影响, columnId=1256536352674427254, journalTitle=作物杂志, columnName=生理生化·植物营养·栽培耕作, runingTitle=null, highlight=null, articleAbstract=以玉米品种先玉335为材料,设置常规密度处理6.75×10
4株/hm
2(D1)和高密度处理8.25×10
4株/hm
2(D2),以及5个施氮水平(0、160、220、280和340 kg/hm
2),分析高密种植下施氮对玉米产量、根系生长分布及氮代谢的影响。结果表明,籽粒产量随施氮量增加呈先增后减的趋势,D2处理下产量显著高于D1处理,高密度种植和优化施氮量(160~220 kg/hm
2)的组合较常规管理增产39.1%~51.8%。优化密氮组合可增加根长、根长密度、根表面积、根体积和比根长,并提高根系谷氨酸合成酶和谷氨酰胺合成酶活性,且2种酶活性与根系生长分布呈显著正相关。综上,推荐种植密度为8.25×10
4株/hm
2时施纯氮160~220 kg/hm
2,该组合通过增强氮代谢酶活性,促进根系生长,增加土壤养分吸收,进而提高玉米产量,可作为陕西关中玉米高产种植模式。, correspAuthors=null, authorNote=null, correspAuthorsNote=
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66(9):2449-2459., articleTitle=Nitric oxide generated by nitrate reductase increases nitrogen uptake capacity by inducing lateral root formation and inorganic nitrogen uptake under partial nitrate nutrition in rice, refAbstract=null)], funds=[Fund(id=1256541080670036023, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, awardId=2024NC-ZDCYL-01-04, language=CN, fundingSource=陕西省重点研发计划项目(2024NC-ZDCYL-01-04), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1256541037464511092, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, xref=null, ext=[AuthorCompanyExt(id=1256541037502259830, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, companyId=1256541037464511092, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China), AuthorCompanyExt(id=1256541037871358585, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, companyId=1256541037464511092, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=西北农林科技大学农学院,712100,陕西杨凌)])], figs=[ArticleFig(id=1256541065570542493, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=EN, label=Fig.1, caption=
Changes of daily average temperature and precipitation during maize growth period from 2021 to 2022, figureFileSmall=6hunABc/RLC/L7A83r6EqQ==, figureFileBig=EW/hFZCXGdcPwLzAutJCmA==, tableContent=null), ArticleFig(id=1256541066744947626, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=图1, caption=
2021-2022年玉米生育期的日均温度和日降水量变化, figureFileSmall=6hunABc/RLC/L7A83r6EqQ==, figureFileBig=EW/hFZCXGdcPwLzAutJCmA==, tableContent=null), ArticleFig(id=1256541071052497861, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=EN, label=Fig.2, caption=
Effects of different densities and nitrogen fertilizer treatments on root morphology of maize from 2021 to 2022 Different capital letters indicate significant differences among different planting density treatments (P < 0.05), different lowercase letters indicate significant differences among different nitrogen fertilizer treatments under the same density (P < 0.05).“*”,“**”and“***”indicate the effect is significant at P < 0.05, P < 0.01 and P < 0.001 levels, respectively,“ns”indicates the effect is not significant. The same below.
, figureFileSmall=lCFEIwPZGjWHWQla0NfODQ==, figureFileBig=rPr46s6gRXNmXhwFCaARpw==, tableContent=null), ArticleFig(id=1256541071425790917, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=图2, caption=
2021-2022年不同密度和氮肥处理对玉米根系形态的影响 不同大写字母表示不同种植密度处理之间差异显著(P < 0.05),不同小写字母表示同一密度下不同施氮量处理之间差异显著(P < 0.05)。“*”、“**”和“***”分别表示在P < 0.05、P < 0.01和P < 0.001水平上存在显著影响,“ns”表示影响不显著。下同。
, figureFileSmall=lCFEIwPZGjWHWQla0NfODQ==, figureFileBig=rPr46s6gRXNmXhwFCaARpw==, tableContent=null), ArticleFig(id=1256541073162232791, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=EN, label=Fig.3, caption=
Effects of different densities and nitrogen fertilizer treatments on maize root architecture from 2021 to 2022 RIA: root inter-row angle; RRA: root intra-row angle; MRIW: maximum root inter-row width; MRRW: maximum root intra-row width; RA: ratio of maximum root inter-row to intra-row angle; RW: ratio of maximum root inter-row to intra-row width; RSA: root surface area; RV: root volume; RL: root length; RLD: root length density; SRL: specific root length; RSR: root-shoot ratio.
, figureFileSmall=R7g4yQyMDgqpq87iD6bTnQ==, figureFileBig=aakDx5DESlQJ1nalbKfRnw==, tableContent=null), ArticleFig(id=1256541074303083484, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=图3, caption=
2021-2022年不同密度和氮肥处理对玉米根系构型的影响 RIA:根系行间张角;RRA:根系株间张角;MRIW:根系行间最大宽度;MRRW:根系株间最大宽度;RA:根系行间与株间最大张角比;RW:根系行间与株间最大宽度比;RSA:根表面积;RV:根体积;RL:根长;RLD:根长密度;SRL:比根长;RSR:根冠比。
, figureFileSmall=R7g4yQyMDgqpq87iD6bTnQ==, figureFileBig=aakDx5DESlQJ1nalbKfRnw==, tableContent=null), ArticleFig(id=1256541074831565807, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=EN, label=Fig.4, caption=
Effects of different densities and nitrogen fertilizer treatments on nitrogen metabolism enzyme activities in maize roots from 2021 to 2022, figureFileSmall=ksEbMmaworaq7V0KPmXYrA==, figureFileBig=MpquR7WNQmw0WgkdNDslQg==, tableContent=null), ArticleFig(id=1256541075565569019, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=图4, caption=
2021-2022年不同密度和氮肥处理对玉米根系氮代谢酶活性的影响, figureFileSmall=ksEbMmaworaq7V0KPmXYrA==, figureFileBig=MpquR7WNQmw0WgkdNDslQg==, tableContent=null), ArticleFig(id=1256541076073078789, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=EN, label=Table 1, caption=
Effects of sowing density and nitrogen application on the grain yield of maize from 2021 to 2022
, figureFileSmall=null, figureFileBig=null, tableContent=
年份 Year | 密度处理 Density treatment | 氮肥处理 N treatment (kg/hm2) | 穗数 Ear number (×104 plants/hm2) | 穗粒数 Kernel number per ear | 百粒重 100-grain weight (g) | 出籽率 Kernel percentage (%) | 籽粒产量 Grain yield (×104 kg/hm2) |
| 2021 | D1 | N0 | 6.72c | 470.08a | 31.05c | 0.79bc | 0.78c |
| | N1 | 6.78c | 476.95a | 35.40bc | 0.82ab | 0.94abc |
| | N2 | 6.56c | 539.09a | 39.89ab | 0.76c | 1.07ab |
| | N3 | 6.17c | 496.80a | 36.09bc | 0.82ab | 0.90bc |
| | N4 | 6.22c | 517.39a | 32.86c | 0.80ab | 0.84b |
| D2 | N0 | 7.17ab | 486.21a | 38.27ab | 0.82ab | 1.09a |
| | N1 | 7.50a | 552.21a | 40.39a | 0.82ab | 1.25a |
| | N2 | 5.94c | 502.00a | 37.44abc | 0.84a | 1.03abc |
| | N3 | 6.39c | 491.84a | 37.07abc | 0.81ab | 0.95abc |
| | N4 | 7.22ab | 476.35a | 33.59bc | 0.80ab | 0.93bc |
| F值F value | 密度 | * | ns | * | * | ** | |
| 施氮量 | * | ns | * | ns | ** | |
| 密度×施氮量 | ns | ns | ns | * | ns | |
| 2022 | D1 | N0 | 5.87bc | 404.57de | 33.76ab | 0.70ab | 0.79c |
| | N1 | 5.60c | 484.40bc | 35.39a | 0.79ab | 0.96bc |
| | N2 | 5.92bc | 488.17bc | 34.83ab | 0.78ab | 1.00bc |
| | N3 | 5.17c | 460.60bcd | 34.96ab | 0.74ab | 0.82c |
| | N4 | 5.87bc | 441.20cde | 35.38a | 0.71ab | 0.92bc |
| D2 | N0 | 7.57a | 399.27e | 33.90ab | 0.77ab | 1.01abc |
| | N1 | 6.99a | 423.21de | 35.37a | 0.82a | 1.04abc |
| | N2 | 7.47a | 501.50a | 33.64ab | 0.75ab | 1.25a |
| | N3 | 6.88ab | 480.77bc | 33.04ab | 0.65b | 1.09ab |
| | N4 | 7.31a | 398.90e | 30.80b | 0.80ab | 0.90bc |
| F值F value | 密度 | ** | ns | ns | * | * | |
| 施氮量 | ns | ** | ns | ns | * | |
| 密度×施氮量 | ns | * | ns | * | ns | |
), ArticleFig(id=1256541076882579469, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=表1, caption=
2021-2022年不同密度和氮肥处理对玉米产量及其构成因素的影响
, figureFileSmall=null, figureFileBig=null, tableContent=
年份 Year | 密度处理 Density treatment | 氮肥处理 N treatment (kg/hm2) | 穗数 Ear number (×104 plants/hm2) | 穗粒数 Kernel number per ear | 百粒重 100-grain weight (g) | 出籽率 Kernel percentage (%) | 籽粒产量 Grain yield (×104 kg/hm2) |
| 2021 | D1 | N0 | 6.72c | 470.08a | 31.05c | 0.79bc | 0.78c |
| | N1 | 6.78c | 476.95a | 35.40bc | 0.82ab | 0.94abc |
| | N2 | 6.56c | 539.09a | 39.89ab | 0.76c | 1.07ab |
| | N3 | 6.17c | 496.80a | 36.09bc | 0.82ab | 0.90bc |
| | N4 | 6.22c | 517.39a | 32.86c | 0.80ab | 0.84b |
| D2 | N0 | 7.17ab | 486.21a | 38.27ab | 0.82ab | 1.09a |
| | N1 | 7.50a | 552.21a | 40.39a | 0.82ab | 1.25a |
| | N2 | 5.94c | 502.00a | 37.44abc | 0.84a | 1.03abc |
| | N3 | 6.39c | 491.84a | 37.07abc | 0.81ab | 0.95abc |
| | N4 | 7.22ab | 476.35a | 33.59bc | 0.80ab | 0.93bc |
| F值F value | 密度 | * | ns | * | * | ** | |
| 施氮量 | * | ns | * | ns | ** | |
| 密度×施氮量 | ns | ns | ns | * | ns | |
| 2022 | D1 | N0 | 5.87bc | 404.57de | 33.76ab | 0.70ab | 0.79c |
| | N1 | 5.60c | 484.40bc | 35.39a | 0.79ab | 0.96bc |
| | N2 | 5.92bc | 488.17bc | 34.83ab | 0.78ab | 1.00bc |
| | N3 | 5.17c | 460.60bcd | 34.96ab | 0.74ab | 0.82c |
| | N4 | 5.87bc | 441.20cde | 35.38a | 0.71ab | 0.92bc |
| D2 | N0 | 7.57a | 399.27e | 33.90ab | 0.77ab | 1.01abc |
| | N1 | 6.99a | 423.21de | 35.37a | 0.82a | 1.04abc |
| | N2 | 7.47a | 501.50a | 33.64ab | 0.75ab | 1.25a |
| | N3 | 6.88ab | 480.77bc | 33.04ab | 0.65b | 1.09ab |
| | N4 | 7.31a | 398.90e | 30.80b | 0.80ab | 0.90bc |
| F值F value | 密度 | ** | ns | ns | * | * | |
| 施氮量 | ns | ** | ns | ns | * | |
| 密度×施氮量 | ns | * | ns | * | ns | |
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Correlation analysis of yield, root biological characteristics and physiological indexes
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| 指标Index | RIA | RRA | MRIW | MRRW | RA | RW | RSA | RV | RL | RLD | SRL | RSR | NR | GS | GOGAT | GY |
| RIA | 1.000 | | | | | | | | | | | | | | | |
| RRA | 0.809** | 1.000 | | | | | | | | | | | | | | |
| MRIW | 0.708** | 0.734** | 1.000 | | | | | | | | | | | | | |
| MRRW | 0.295* | 0.194 | 0.306* | 1.000 | | | | | | | | | | | | |
| RA | 0.148 | -0.452** | -0.127 | 0.121 | 1.000 | | | | | | | | | | | |
| RW | 0.330* | 0.473** | 0.609** | -0.551** | -0.261* | 1.000 | | | | | | | | | | |
| RSA | 0.582** | 0.506** | 0.529** | 0.136 | 0.063 | 0.325* | 1.000 | | | | | | | | | |
| RV | 0.372** | 0.212 | 0.270* | 0.006 | 0.236 | 0.209 | 0.806** | 1.000 | | | | | | | | |
| RL | 0.600** | 0.547** | 0.596** | 0.212 | 0.029 | 0.340** | 0.767** | 0.560** | 1.000 | | | | | | | |
| RLD | 0.583** | 0.528** | 0.591** | 0.193 | 0.028 | 0.359** | 0.692** | 0.524** | 0.969** | 1.000 | | | | | | |
| SRL | 0.290* | 0.319* | 0.358** | 0.209 | -0.069 | 0.161 | 0.637** | 0.460** | 0.803** | 0.761** | 1.000 | | | | | |
| RSR | 0.690** | 0.704** | 0.681** | 0.267* | -0.113 | 0.362** | 0.600** | 0.360** | 0.657** | 0.627** | 0.266* | 1.000 | | | | |
| NR | 0.163 | 0.157 | 0.075 | -0.122 | -0.030 | 0.153 | 0.410** | 0.242 | 0.323* | 0.233 | 0.312* | 0.122 | 1.000 | | | |
| GS | -0.105 | -0.095 | 0.008 | -0.203 | 0.002 | 0.175 | 0.028 | 0.124 | 0.087 | 0.125 | 0.153 | -0.088 | 0.064 | 1.000 | | |
| GOGAT | 0.485** | 0.368** | 0.504** | 0.287* | 0.127 | 0.191 | 0.676** | 0.563** | 0.741** | 0.718** | 0.655** | 0.521** | 0.498** | 0.142 | 1.000 | |
| GY | 0.198 | 0.183 | 0.331** | 0.053 | -0.007 | 0.221 | 0.163 | 0.177 | 0.356** | 0.425** | 0.142 | 0.274* | -0.005 | 0.348** | 0.395** | 1.000 |
), ArticleFig(id=1256541079764066342, tenantId=1146029695717560320, journalId=1256314692575182859, articleId=1256541017709339067, language=CN, label=表2, caption=
产量、根系生物学特性以及生理指标的相关性分析
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| 指标Index | RIA | RRA | MRIW | MRRW | RA | RW | RSA | RV | RL | RLD | SRL | RSR | NR | GS | GOGAT | GY |
| RIA | 1.000 | | | | | | | | | | | | | | | |
| RRA | 0.809** | 1.000 | | | | | | | | | | | | | | |
| MRIW | 0.708** | 0.734** | 1.000 | | | | | | | | | | | | | |
| MRRW | 0.295* | 0.194 | 0.306* | 1.000 | | | | | | | | | | | | |
| RA | 0.148 | -0.452** | -0.127 | 0.121 | 1.000 | | | | | | | | | | | |
| RW | 0.330* | 0.473** | 0.609** | -0.551** | -0.261* | 1.000 | | | | | | | | | | |
| RSA | 0.582** | 0.506** | 0.529** | 0.136 | 0.063 | 0.325* | 1.000 | | | | | | | | | |
| RV | 0.372** | 0.212 | 0.270* | 0.006 | 0.236 | 0.209 | 0.806** | 1.000 | | | | | | | | |
| RL | 0.600** | 0.547** | 0.596** | 0.212 | 0.029 | 0.340** | 0.767** | 0.560** | 1.000 | | | | | | | |
| RLD | 0.583** | 0.528** | 0.591** | 0.193 | 0.028 | 0.359** | 0.692** | 0.524** | 0.969** | 1.000 | | | | | | |
| SRL | 0.290* | 0.319* | 0.358** | 0.209 | -0.069 | 0.161 | 0.637** | 0.460** | 0.803** | 0.761** | 1.000 | | | | | |
| RSR | 0.690** | 0.704** | 0.681** | 0.267* | -0.113 | 0.362** | 0.600** | 0.360** | 0.657** | 0.627** | 0.266* | 1.000 | | | | |
| NR | 0.163 | 0.157 | 0.075 | -0.122 | -0.030 | 0.153 | 0.410** | 0.242 | 0.323* | 0.233 | 0.312* | 0.122 | 1.000 | | | |
| GS | -0.105 | -0.095 | 0.008 | -0.203 | 0.002 | 0.175 | 0.028 | 0.124 | 0.087 | 0.125 | 0.153 | -0.088 | 0.064 | 1.000 | | |
| GOGAT | 0.485** | 0.368** | 0.504** | 0.287* | 0.127 | 0.191 | 0.676** | 0.563** | 0.741** | 0.718** | 0.655** | 0.521** | 0.498** | 0.142 | 1.000 | |
| GY | 0.198 | 0.183 | 0.331** | 0.053 | -0.007 | 0.221 | 0.163 | 0.177 | 0.356** | 0.425** | 0.142 | 0.274* | -0.005 | 0.348** | 0.395** | 1.000 |
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