Article(id=1284574848785559679, tenantId=1146029695717560320, journalId=1283840259964276757, issueId=1284574825708503250, articleNumber=null, orderNo=null, doi=10.11674/zwyf.2025238, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1748793600000, receivedDateStr=2025-06-02, revisedDate=null, revisedDateStr=null, acceptedDate=1759507200000, acceptedDateStr=2025-10-04, onlineDate=1784196110196, onlineDateStr=2026-07-16, pubDate=1779638400000, pubDateStr=2026-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1784196110196, onlineIssueDateStr=2026-07-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1784196110196, creator=13701087609, updateTime=1784196110196, updator=13701087609, issue=Issue{id=1284574825708503250, tenantId=1146029695717560320, journalId=1283840259964276757, year='2026', volume='32', issue='5', pageStart='965', pageEnd='1180', issueExtLink='null', onlineDate='null', pubDate='1779638400000', pubDateStr='2026-05-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1784196104695, creator='13701087609', updateTime=1784196513220, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1284576539283001906, tenantId=1146029695717560320, journalId=1283840259964276757, issueId=1284574825708503250, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1284576539283001907, tenantId=1146029695717560320, journalId=1283840259964276757, issueId=1284574825708503250, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1030, endPage=1042, ext={EN=ArticleExt(id=1284574848991080576, articleId=1284574848785559679, tenantId=1146029695717560320, journalId=1283840259964276757, language=EN, title=Assessment of nitrogen inputs and loss risks in maize fields at the county scale in the Qingtongxia Irrigation District, Ningxia, columnId=1284574826530586835, journalTitle=Journal of Plant Nutrition and Fertilizers, columnName=Research paper, runingTitle=null, highlight=null, articleAbstract=
Objectives To clarify the characteristics of nitrogen flux balance, nitrogen fertilizer use efficiency, and nitrogen loss thresholds (maximum environmentally permissible emissions) in maize fields of the Qingtongxia Irrigation District, Ningxia, and to establish a corresponding management system.
Methods From 2018 to 2023, total nitrogen input in maize fields across the irrigation district increased from 47800 t in 2018 to 65000 t in 2023, an increase of 35.83%, primarily due to a cropland expansion of 17100 hectares. Concurrently, environmental nitrogen emissions rose from 8900 t (18.70% of input) to 12100 t (18.55% of input), a 34.69% growth, with ammonia volatilization as the dominant pathway (accounting for 56.98% of total environmental emissions), followed by leaching (accounting for 26.54% of total environmental emissions) and runoff/erosion (accounting for 9.99% of total environmental emissions). The nitrogen fertilizer use efficiency in the irrigation district reached 42.92% in 2023, an increase of 5.72 percentage points compared with 2018. Notably, in Jinfeng District, ammonia volatilization risk decreased from 208% above the threshold (high risk in 2018) to low risk in 2023 through fertilizer reduction, while leaching risk was effectively controlled−by 2023, only Xixia District remained at low risk, and all other counties achieved risk-free status. Balanced fertilization combined with enhanced-efficiency fertilizers (S2) was identified as the optimal strategy. Compared with nitrogen reduction alone (S1), S2 increased nitrogen fertilizer reduction potential by 5.19−8.42 percentage points, improved use efficiency by 4.80−5.14 percentage points, reduced total environmental emissions by 44.13% (with all loss pathways below thresholds), and decreased environmental emissions by 52.50% while increasing nitrogen fertilizer use efficiency by 12.45 percentage points, compared with the 2023 baseline (S0).
Conclusions Integrating balanced fertilization with enhanced efficiency fertilizers, together with water saving engineering measures, can reduce all forms of nitrogen emissions below environmental thresholds in the Qingtongxia Irrigation District, representing a key technological pathway for achieving regional agricultural green development and nitrogen emission mitigation.
, authors=Jian-hang LUO
1, Yu-zhou XU
2, Xiao-tong LIU
1, Ke-feng HOU
3, Yong-feng DING
4, Han-lin WANG
5, Zhi LI
6, Xiao-xia MA
7, Ying ZHAO
1, Ying MA
1, Xue-jun ZHANG
1, *, Tian-peng ZHANG
8, Qiu-liang LEI
8, authorsList=Jian-hang LUO, Yu-zhou XU, Xiao-tong LIU, Ke-feng HOU, Yong-feng DING, Han-lin WANG, Zhi LI, Xiao-xia MA, Ying ZHAO, Ying MA, Xue-jun ZHANG, Tian-peng ZHANG, Qiu-liang LEI, authorCompany=null, correspAuthors=Xue-jun ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of plant nutrition and fertilizer. All rights reserved., 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, fund=null), CN=ArticleExt(id=1284574850454892687, articleId=1284574848785559679, tenantId=1146029695717560320, journalId=1283840259964276757, language=CN, title=宁夏青铜峡灌区县域尺度玉米田氮素投入及损失风险评价, columnId=1284574826685776085, journalTitle=植物营养与肥料学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
目的 明确宁夏青铜峡灌区玉米田氮素流动与平衡特征、氮肥利用效率、氮素环境排放阈值(环境可承载的最大排放量),并制定相应防控体系。
方法 以宁夏青铜峡灌区玉米农田系统为研究对象,基于2018年和2023年的统计数据,运用Nufer (nutrient flows in food chain, environment and resources use)模型,评估玉米田氮素流动与平衡,并利用情景模拟明确该地氮肥减施潜力。
结果 2018—2023年期间,灌区玉米田氮素总输入量从4.78万t增加到6.50万t,增幅达35.83%,这主要源于种植面积扩大了1.71万hm2。环境排放总量从0.89万t (占输入量18.70%)升至1.21万t (占输入量18.55%),增幅34.69%,其中,氨挥发为主要途径(占环境排放总量的56.98%),其次为淋溶损失(占环境排放总量的26.54%)、径流与侵蚀损失(占环境排放总量的9.99%)。2023年灌区的氮肥利用率为42.92%,较2018年增加5.72个百分点。2018年金凤区氨挥发为阈值的208%,属于高风险区;2023年采用化肥减施后降至低风险;淋溶损失控制效果突出,2023年仅西夏区为低风险,其余县区均处于无风险水平。平衡施肥+新型肥料(S2)为最优方案,与单纯减氮(S1)相比,氮肥减施潜力提升5.19~8.42个百分点,利用率提高4.80~5.14个百分点;环境排放总量降低44.13%,各途径损失均低于阈值;与2023年基准(S0)方案相比,排放量减少52.50%,利用率提升12.45个百分点。
结论 通过平衡施肥配合施用新型肥料,并同时实施工程节水等措施,可将宁夏青铜峡灌区各种途径氮素环境排放降低至阈值以下,是实现区域农业绿色发展与氮素减排的重要技术路径。
, authors=罗健航
1, 徐宇宙
2, 刘晓彤
1, 侯克峰
3, 丁永峰
4, 王翰霖
5, 李志
6, 马晓霞
7, 赵营
1, 马英
1, 张学军
1, *, 张天鹏
8, 雷秋良
8, authorsList=罗健航, 徐宇宙, 刘晓彤, 侯克峰, 丁永峰, 王翰霖, 李志, 马晓霞, 赵营, 马英, 张学军, 张天鹏, 雷秋良, authorCompany=null, correspAuthors=张学军, authorNote=
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7Wuzhong Agricultural Technology Promotion Service Center, Wuzhong, Ningxia), AuthorCompanyExt(id=1284574852841451684, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, companyId=1284574852824674466, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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8State Key Laboratory of Efficient Utilization of Arid and Semiarid Arable Land in Northern China / Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs / Changping Soil Quality National Observation and Research Station / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China), AuthorCompanyExt(id=1284574852954697895, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, companyId=1284574852942114981, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
8农业农村部面源污染控制重点实验室 / 北京昌平土壤质量国家野外科学观测研究站 / 北方干旱半干旱耕地高效利用全国重点实验室 / 中国农业科学院农业资源与农业区划研究所,北京 100081)])], figs=[ArticleFig(id=1284574858554093816, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.1, caption=
Nitrogen supply and demand of maize fields in different counties of the Qingtongxia Irrigation District, figureFileSmall=xvcvvgvOrl3xMkO+pVZw/w==, figureFileBig=7KTGy3cQT8DshaT4pWD4Mw==, tableContent=null), ArticleFig(id=1284574858625396985, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图1, caption=
青铜峡灌区各区县玉米田氮素资源量和需求量, figureFileSmall=xvcvvgvOrl3xMkO+pVZw/w==, figureFileBig=7KTGy3cQT8DshaT4pWD4Mw==, tableContent=null), ArticleFig(id=1284574859040633082, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.2, caption=
Spatiotemporal characteristics of nitrogen inputs and outputs of maize fields in different counties of the Qingtongxia Irrigation District, figureFileSmall=j8LnRfuugSbGTlI00p0H5g==, figureFileBig=YjlS1zI6uEfIXX2hc3PwjQ==, tableContent=null), ArticleFig(id=1284574859111936251, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图2, caption=
青铜峡灌区各县区玉米田氮素输入输出时空特征, figureFileSmall=j8LnRfuugSbGTlI00p0H5g==, figureFileBig=YjlS1zI6uEfIXX2hc3PwjQ==, tableContent=null), ArticleFig(id=1284574859170656508, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.3, caption=
Nitrogen flow patterns and system boundaries of maize field systems, figureFileSmall=KV/Nrij1Z6dBDbBezfGkmg==, figureFileBig=/MTC+c+quqRLApYjSFSe9A==, tableContent=null), ArticleFig(id=1284574859254542589, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图3, caption=
玉米农田系统氮素流动模式及边界条件, figureFileSmall=KV/Nrij1Z6dBDbBezfGkmg==, figureFileBig=/MTC+c+quqRLApYjSFSe9A==, tableContent=null), ArticleFig(id=1284574859447480575, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.4, caption=
Environmental nitrogen emissions from maize fields in different counties of the Qingtongxia Irrigation District, figureFileSmall=T4IbHxaEpTYqAqP7tnyouw==, figureFileBig=VC9lmFo+NaEK1jIakpKCcQ==, tableContent=null), ArticleFig(id=1284574859514589440, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图4, caption=
青铜峡灌区各区县玉米田氮素环境排放量, figureFileSmall=T4IbHxaEpTYqAqP7tnyouw==, figureFileBig=VC9lmFo+NaEK1jIakpKCcQ==, tableContent=null), ArticleFig(id=1284574859602669825, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.5, caption=
Risk classification of nitrogen losses via different pathways from maize fields in different counties of the Qingtongxia Irrigation District in 2018 and 2023, figureFileSmall=dshL831UqrC5cPlcbuU2nQ==, figureFileBig=1Tp14n9OSHh7ST6ZWAeehw==, tableContent=null), ArticleFig(id=1284574859711721730, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图5, caption=
2018和2023年青铜峡灌区各县区玉米田不同途径氮素损失风险评估, figureFileSmall=dshL831UqrC5cPlcbuU2nQ==, figureFileBig=1Tp14n9OSHh7ST6ZWAeehw==, tableContent=null), ArticleFig(id=1284574859774636291, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.6, caption=
Environmental nitrogen emissions from maize fields in different counties of the Qingtongxia Irrigation District under different scenarios, figureFileSmall=ZETic4wfOLsSD6B/o7qiqA==, figureFileBig=g1B2PfP8r1HsOZ6AlUfeVw==, tableContent=null), ArticleFig(id=1284574859841745156, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图6, caption=
不同情境下青铜峡灌区各县区玉米田氮素环境排放量, figureFileSmall=ZETic4wfOLsSD6B/o7qiqA==, figureFileBig=g1B2PfP8r1HsOZ6AlUfeVw==, tableContent=null), ArticleFig(id=1284574859934019845, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Fig.7, caption=
Pathway-specific nitrogen loss risks in maize fields of different counties of the Qingtongxia Irrigation District under different scenarios, figureFileSmall=K7BI0pHKBPa5PwmK3CAWFw==, figureFileBig=QiJq36ZZvD1G16sHBGJOLQ==, tableContent=null), ArticleFig(id=1284574860038877446, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=图7, caption=
不同情境下青铜峡灌区各县区玉米田不同途径氮素损失风险, figureFileSmall=K7BI0pHKBPa5PwmK3CAWFw==, figureFileBig=QiJq36ZZvD1G16sHBGJOLQ==, tableContent=null), ArticleFig(id=1284574861662073095, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Tab.1, caption=
Technical list of nutrient management practices in maize field systems
, figureFileSmall=null, figureFileBig=null, tableContent=
| 情景 Scenarios | 环节 Section | 技术 Technique | 效果 Effect |
|---|
| S1 | 施肥量 Fertilizer application rate | 化肥减施 Chemical fertilizer reduction | 氨挥发减少29.51% Reduce 29.51% of NH3 emission |
| S2 | 肥料产品 Fertilizer products | 新型肥料 New-type fertilizer | 氨挥发减少40%,氮淋溶减少60% Reduce 40% of NH3 emission and 60% of N leaching |
| S3 | 施肥方式 Fertilization method | 条施 Band application | 氨挥发减少20%,氮径流减少50% Reduce 20% of NH3 emission and 50% of N runoff |
| S4 | 灌溉 Irrigation | 工程节水 Engineering water-saving method | 氮淋溶减少40% Reduce 40% of N leaching |
), ArticleFig(id=1284574861737570568, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=表1, caption=
玉米田系统养分管理技术清单[28]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 情景 Scenarios | 环节 Section | 技术 Technique | 效果 Effect |
|---|
| S1 | 施肥量 Fertilizer application rate | 化肥减施 Chemical fertilizer reduction | 氨挥发减少29.51% Reduce 29.51% of NH3 emission |
| S2 | 肥料产品 Fertilizer products | 新型肥料 New-type fertilizer | 氨挥发减少40%,氮淋溶减少60% Reduce 40% of NH3 emission and 60% of N leaching |
| S3 | 施肥方式 Fertilization method | 条施 Band application | 氨挥发减少20%,氮径流减少50% Reduce 20% of NH3 emission and 50% of N runoff |
| S4 | 灌溉 Irrigation | 工程节水 Engineering water-saving method | 氮淋溶减少40% Reduce 40% of N leaching |
), ArticleFig(id=1284574861829845257, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=EN, label=Tab.2, caption=
Nitrogen input, fertilizer reduction potential, and nitrogen use efficiency of maize fields in different counties of the Qingtongxia Irrigation District under different scenarios
, figureFileSmall=null, figureFileBig=null, tableContent=
县区 Counties | S0 | | S1 | | S2 | | S3 | | S4 |
|---|
Ninput (kg/hm2) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) |
|---|
兴庆区 Xingqing | 270.00 | 42.59 | | 216.98 | 19.64 | 53.00 | | 197.80 | 26.74 | 58.14 | | 208.43 | 22.81 | 55.17 | | 211.36 | 21.72 | 54.41 |
金凤区 Jinfeng | 372.75 | 31.39 | | 221.44 | 40.59 | 52.84 | | 201.87 | 45.84 | 57.96 | | 212.71 | 42.93 | 55.01 | | 215.71 | 42.13 | 54.25 |
西夏区 Xixia | 430.50 | 30.46 | | 252.70 | 41.30 | 51.90 | | 230.37 | 46.49 | 56.93 | | 242.74 | 43.62 | 54.02 | | 246.15 | 42.82 | 53.27 |
永宁县 Yongning | 337.50 | 41.25 | | 270.56 | 19.84 | 51.45 | | 246.65 | 26.92 | 56.44 | | 259.89 | 23.00 | 53.56 | | 263.55 | 21.91 | 52.82 |
贺兰县 Helan | 420.00 | 30.60 | | 246.89 | 41.22 | 52.05 | | 225.07 | 46.41 | 57.10 | | 237.16 | 43.53 | 54.19 | | 240.50 | 42.74 | 53.44 |
灵武市 Lingwu | 322.50 | 38.79 | | 239.30 | 25.80 | 52.27 | | 218.15 | 32.36 | 57.34 | | 229.87 | 28.72 | 54.42 | | 233.11 | 27.72 | 53.66 |
平罗县 Pingluo | 379.50 | 44.39 | | 335.30 | 11.65 | 50.24 | | 305.66 | 19.46 | 55.11 | | 322.08 | 15.13 | 52.30 | | 326.61 | 13.94 | 51.58 |
惠农区 Huinong | 364.50 | 47.71 | | 347.35 | 4.71 | 50.07 | | 316.65 | 13.13 | 54.92 | | 333.66 | 8.46 | 52.12 | | 338.36 | 7.17 | 51.40 |
大武口区 Dawukou | 363.00 | 45.80 | | 330.38 | 8.99 | 50.32 | | 301.19 | 17.03 | 55.20 | | 317.36 | 12.57 | 52.38 | | 321.83 | 11.34 | 51.66 |
利通区 Litong | 376.95 | 51.06 | | 388.43 | | 49.55 | | 354.10 | 6.06 | 54.35 | | 373.11 | 1.02 | 51.58 | | 378.37 | | 50.87 |
青铜峡市 Qingtongxia | 412.50 | 46.41 | | 386.19 | 6.38 | 49.58 | | 352.06 | 14.65 | 54.38 | | 370.97 | 10.07 | 51.61 | | 376.19 | 8.80 | 50.89 |
青铜峡灌区 Qingtongxiaguanqu | 4049.7 | 42.92 | | 3235.52 | 20.1 | 50.48 | | 2949.57 | 27.17 | 55.37 | | 3107.98 | 23.25 | 52.55 | | 3151.74 | 22.17 | 51.82 |
), ArticleFig(id=1284574861926314250, tenantId=1146029695717560320, journalId=1283840259964276757, articleId=1284574848785559679, language=CN, label=表2, caption=
不同情境下青铜峡灌区各县区玉米田氮素输入、氮肥减施潜力及氮肥利用效率
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县区 Counties | S0 | | S1 | | S2 | | S3 | | S4 |
|---|
Ninput (kg/hm2) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) | | Ninput (kg/hm2) | NRP (%) | NUEc (%) |
|---|
兴庆区 Xingqing | 270.00 | 42.59 | | 216.98 | 19.64 | 53.00 | | 197.80 | 26.74 | 58.14 | | 208.43 | 22.81 | 55.17 | | 211.36 | 21.72 | 54.41 |
金凤区 Jinfeng | 372.75 | 31.39 | | 221.44 | 40.59 | 52.84 | | 201.87 | 45.84 | 57.96 | | 212.71 | 42.93 | 55.01 | | 215.71 | 42.13 | 54.25 |
西夏区 Xixia | 430.50 | 30.46 | | 252.70 | 41.30 | 51.90 | | 230.37 | 46.49 | 56.93 | | 242.74 | 43.62 | 54.02 | | 246.15 | 42.82 | 53.27 |
永宁县 Yongning | 337.50 | 41.25 | | 270.56 | 19.84 | 51.45 | | 246.65 | 26.92 | 56.44 | | 259.89 | 23.00 | 53.56 | | 263.55 | 21.91 | 52.82 |
贺兰县 Helan | 420.00 | 30.60 | | 246.89 | 41.22 | 52.05 | | 225.07 | 46.41 | 57.10 | | 237.16 | 43.53 | 54.19 | | 240.50 | 42.74 | 53.44 |
灵武市 Lingwu | 322.50 | 38.79 | | 239.30 | 25.80 | 52.27 | | 218.15 | 32.36 | 57.34 | | 229.87 | 28.72 | 54.42 | | 233.11 | 27.72 | 53.66 |
平罗县 Pingluo | 379.50 | 44.39 | | 335.30 | 11.65 | 50.24 | | 305.66 | 19.46 | 55.11 | | 322.08 | 15.13 | 52.30 | | 326.61 | 13.94 | 51.58 |
惠农区 Huinong | 364.50 | 47.71 | | 347.35 | 4.71 | 50.07 | | 316.65 | 13.13 | 54.92 | | 333.66 | 8.46 | 52.12 | | 338.36 | 7.17 | 51.40 |
大武口区 Dawukou | 363.00 | 45.80 | | 330.38 | 8.99 | 50.32 | | 301.19 | 17.03 | 55.20 | | 317.36 | 12.57 | 52.38 | | 321.83 | 11.34 | 51.66 |
利通区 Litong | 376.95 | 51.06 | | 388.43 | | 49.55 | | 354.10 | 6.06 | 54.35 | | 373.11 | 1.02 | 51.58 | | 378.37 | | 50.87 |
青铜峡市 Qingtongxia | 412.50 | 46.41 | | 386.19 | 6.38 | 49.58 | | 352.06 | 14.65 | 54.38 | | 370.97 | 10.07 | 51.61 | | 376.19 | 8.80 | 50.89 |
青铜峡灌区 Qingtongxiaguanqu | 4049.7 | 42.92 | | 3235.52 | 20.1 | 50.48 | | 2949.57 | 27.17 | 55.37 | | 3107.98 | 23.25 | 52.55 | | 3151.74 | 22.17 | 51.82 |
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