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Compared to the N210 treatment, the oat plant nitrogen uptake, nitrogen agronomic efficiency, and nitrogen use efficiency increased by 4.90%, 48.51%, and 6.44% in O168+D treatment, respectively. Therefore, under the condition of Horqin aeolian sandy soil, the optimized treatment-combining reduced-staged application of N with DMPP can increase the yield and improve the N use efficiency of forage oat. These findings provide a theoretical basis for enhancing the yield of forage oat and optimizing N fertilizer application in the Horqin Sandy Land., authors=XU Han-yu1, XU Zhen-peng2, LI Jia-xing1, SUN Wen-long1, HU Mei-ting1, GAO Kai1, AN Hai-bo1, authorsList=XU Han-yu, XU Zhen-peng, LI Jia-xing, SUN Wen-long, HU Mei-ting, GAO Kai, AN Hai-bo, authorCompany=1 College of Grassland Science, University of Inner Mongolia Mizu University, Tongliao, Inner Mongolia 028000, China; 2 Ulanqab Agricultural and Forestry Science Institute, Ulanqab, Inner Mongolia 012000, China, 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, fund=null), CN=ArticleExt(id=1309574820426244178, articleId=1309574819872596049, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=减量分期施氮和硝化抑制剂对饲用燕麦氮肥利用率的影响, columnId=1309565376569114713, journalTitle=草地学报, columnName=技术研发, runingTitle=null, highlight=null, articleAbstract=为探讨分期施氮和添加硝化抑制剂(3,4-Dimethylpyrazole Phosphate,DMPP)对饲用燕麦(Avena sativa L.)氮素吸收利用和产量的影响,本研究以饲用燕麦为试验材料,设置7个处理:不施氮(CK);常规施氮105 kg·hm⁻²(N₁₀₅),210 kg·hm⁻²(N₂₁₀)和300 kg·hm⁻²(N₃₀₀);减量优化施氮168 kg·hm⁻²(O₁₆₈);减量优化施氮配施DMPP(O₁₆₈+D、O₁₄₄+D),测定饲用燕麦氮肥利用特征及影响因素。结果表明,相较于常规施氮处理,O₁₆₈+D处理下的产量最高,为7412.13 kg·hm⁻²,显著高于常规施氮处理(P<0.05),燕麦植株氮素吸收量、氮肥农学效率和氮肥利用率相比N₂₁₀处理分别提高了4.90%,48.51%和6.44%。因此,在科尔沁风沙土条件下,通过氮肥减量分期施用结合DMPP进行优化处理,能够起到增产和提高饲用燕麦氮肥利用率的作用,研究结果为科尔沁沙地饲用燕麦增产和氮肥合理施用提供了理论依据。, authors=许瀚予1, 徐振朋2, 李佳兴1, 孙文龙1, 胡美婷1, 高凯1, 安海波1, authorsList=许瀚予, 徐振朋, 李佳兴, 孙文龙, 胡美婷, 高凯, 安海波, authorCompany=1 内蒙古民族大学草业学院, 内蒙古 通辽 028000; 2 乌兰察布市农林科学研究所, 内蒙古 乌兰察布 012000, correspAuthors=null, authorNote=许瀚予(2000-),女,汉族,吉林吉林人,硕士研究生,主要从事饲草生产与管理方面的研究,E-mail:1710093274@qq.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=iqLdOkZqLIYQ359tSUh+0w==, pdfFileSize=2025372, 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=内蒙古民族大学博士科研启动基金项目 (BS612); 内蒙古农牧业青年创新基金项目 (2023QNJJN12); 内蒙古自然科学基金项目 (2021BS03017))}, authors=null, keywords=[Keyword(id=1309574824431808936, tenantId=1146029695717560320, journalId=1308397196074385509, articleId=1309574819872596049, language=CN, orderNo=1, keyword=饲用燕麦), Keyword(id=1309574824486334889, tenantId=1146029695717560320, journalId=1308397196074385509, articleId=1309574819872596049, language=CN, orderNo=2, keyword=硝化抑制剂), Keyword(id=1309574824566026666, 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detailUrlEn=https://castjournals.cast.org.cn/joweb/cdxb/EN/10.11733/j.issn.1007-0435.2026.07.033, pdfUrlCn=https://castjournals.cast.org.cn/joweb/cdxb/CN/PDF/10.11733/j.issn.1007-0435.2026.07.033, pdfUrlEn=https://castjournals.cast.org.cn/joweb/cdxb/EN/PDF/10.11733/j.issn.1007-0435.2026.07.033, aliStartDate=null, aliEndDate=null, collectionFlag=false, citedCount=null, citedUrl=null, previewStatus=0, delFlag=0, hasFullText=0, orderTime=1784044800000, fullTextJson=null, articleText=null, reference=JU X T, GU B J. Status-quo, problem and trend of nitrogen fertilization in China[J]. Journal of Plant Nutrition and Fertilizer, 2014, 20(4):783-795 巨晓棠, 谷保静. 我国农田氮肥施用现状、问题及趋势[J]. 植物营养与肥料学报, 2014, 20(4):783-795 REN K Y, DUAN Y H, XU M G, et al. Effect of manure application on nitrogen use efficiency of crops in china: a meta-analysis[J]. Scientia Agricultura Sinica, 2019, 52(17):2983-2996 任科宇, 段英华, 徐明岗, 等. 施用有机肥对我国作物氮肥利用率影响的整合分析[J]. 中国农业科学, 2019, 52(17):2983-2996 JU X T, ZHANG F S. Thinking about nitrogen recovery rate[J]. Ecology and Environmental Sciences, 2003, 2:192-197 巨晓棠, 张福锁. 关于氮肥利用率的思考[J]. 生态环境, 2003, 2:192-197 ZHU Z L. Loss of fertilizer N from plants-soil system and the strategies and techniques for its reduction[J]. Soil and Environmental Sciences, 2000, 1:1-6 朱兆良. 农田中氮肥的损失与对策[J]. 土壤与环境, 2000, 1:1-6 KLIMASMITH I M, KENT A D. Micromanaging the nitrogen cycle in agroecosystems[J]. Trends in Microbiology, 2022, 30(11):1045-1055 LIU X J, SHA Z P, SONG Y, et al. China’s atmospheric ammonia emission characteristics, mitigation options and policy recommendations[J]. Research of Environmental Sciences, 2021, 34(1):149-157 刘学军, 沙志鹏, 宋宇, 等. 我国大气氨的排放特征、减排技术与政策建议[J]. 环境科学研究, 2021, 34(1):149-157 KANG L X, LUO W G, HOU Z A, et al. Effects of nitrification inhibitors on nitrous oxide emissions, main crop yield and nitrogen use efficiency in cropland in china: a meta-analysis[J]. Chinese Agricultural Science Bulletin, 2024, 40(32):107-115 康丽霞, 罗维贵, 侯振安, 等. 硝化抑制剂影响中国农田氧化亚氮排放、主要作物产量及氮肥利用率的Meta分析[J]. 中国农学通报, 2024, 40(32):107-115 CHEN H B, CHEN J, DU A H, et al. Nitrification inhibitors improve nitrogen use efficiency in farmland[J]. Agricultural Equipment & Technology, 2019, 45(4):32-34 陈海波, 陈娟, 杜爱华, 等. 硝化抑制剂提高农田氮肥利用率[J]. 农业装备技术, 2019, 45(4):32-34 YUAN W L, CUI L, MEI S Y, et al. Technology of increasing nitrogen use efficiency for crops[J]. Modern Agricultural Science and Technology, 2013, 5:244, 250 袁伟玲, 崔磊, 梅时勇, 等. 提高作物氮肥利用率的技术措施[J]. 现代农业科技, 2013, 5:244, 250 YOU L C, LI D P, CUI L, et al. Effects of different nitrification inhibitor combinations on the transformation of ammonium nitrogen in black soil and cinnamon soil[J]. Journal of Plant Nutrition and Fertilizer, 2019, 25(12):2113-2121 油伦成, 李东坡, 崔磊, 等. 不同硝化抑制剂组合对铵态氮在黑土和褐土中转化的影响[J]. 植物营养与肥料学报, 2019, 25(12):2113-2121 YANG Z C, REN M W, YUAN F F, et al. The Effect of nitrification inhibitor on crop rhizosphere soil pH andfertilizer utilization rate[J]. Fertilizer & Health, 2025, 52(3):16-19 杨自超, 任孟伟, 袁方方, 等. 硝化抑制剂对作物根际土壤pH及肥料利用率的影响[J]. 肥料与健康, 2025, 52(3):16-19 HU J Y, ZHANG J, KONG B, et al. Application and prospect of nitrogen fertilizer synergists[J]. Fertilizer & Health, 2023, 50(1):1-13 胡佳玉, 张晶, 孔波, 等. 氮肥增效剂的应用与展望[J]. 肥料与健康, 2023, 50(1):1-13 ABALOS D, JEFFERY S, SANZ-COBEN A, et al. Meta-analysis of the effect of urease and nitrification inhibitors on crop productivity and nitrogen use efficiency[J]. Agriculture, Ecosystems&Environment, 2014, 189:136-144 WANG W, LI Y, WANG W, et al. Global meta-analysis of individual and combined nitrogen inhibitors:enhancing plant productivity and reducing environmental losses[J]. Global Change Biology, 2024, 30(12):e70007 LIU Z Y, LIU G, ZHANG Y X, et al. Effects of nitrogen fertilizer application and mixing ratio on grass forage yield of oat-pea forage crops interspecific relationships[J]. Agricultural Research in the Arid Areas, 2024, 42(5):109-117 刘泽宇, 刘罡, 张玉霞, 等.氮肥用量和混播比例对麦豆混播草地饲草产量及种间关系的影响[J]. 干旱地区农业研究, 2024, 42(5):109-117 CAO W J, LI Y Q, CHEN Y P, et al. Soil stoichiometric characteristics under different land use types in the Horqin Sandy Land, China[J]. Chinese Journal of Applied Ecology, 2022, 33(12):3312-3320 曹雯婕, 李玉强, 陈银萍, 等. 科尔沁沙地不同土地利用类型土壤化学计量特征[J]. 应用生态学报, 2022, 33(12):3312-3320 PAL V, GILL R, SINGH R. Impact of nitrogen application on fodder quality and yield parameters of oats:a review[J]. The Pharma Innovation Journal, 2021, 10(5):1429-1431 WANG L, ZHANG Y X, YU H R, et al. Effects of nitrogen fertilizer application on growth characteristics and yield of oats in sandy land[J]. Pratacultural Science, 2017, 34(7):1516-1521 王乐, 张玉霞, 于华荣, 等. 氮肥对沙地燕麦生长特性及产量的影响[J]. 草业科学, 2017, 34(7):1516-1521 ZHANG Y X, WANG X, ZHANG Q X, et al. Effects of nitrogen application level on dry matter accumulation and nitrogen absorption and utilization of different forage oat in sandy land habitat[J]. Journal of Northwest A&F University (Natural Science Edition), 2022, 50(4):93-99, 107 张玉霞, 王鑫, 张庆昕, 等. 施氮水平对沙地生境下不同饲用燕麦品种干物质积累及氮素吸收利用的影响[J]. 西北农林科技大学学报(自然科学版), 2022, 50(4):93-99, 107 BAO S D. Soil and Agricultural Chemistry Analysis[M]. Beijing: China Agriculture Press, 2000: 鲍士旦. 土壤农化分析[M]. 北京:中国农业出版社, 2000: EASLON H M, BLOOM A J. Easy leaf area:automated digital image analysis for rapid and accurate measurement of leaf area[J]. Applications in Plant Sciences, 2014, 2(7):1400033 HAO J J, KANG Z L, YU Y. Plant physiology experimental technology[M]. Beijing: Chemical Industry Press, 2006:68 郝建军, 康宗利, 于洋. 植物生理学实验技术[M]. 北京:化学工业出版社, 2006:68 SIMS G K, ELLSWORTH T R, MULVANEY R L. Microscale determination of inorganic nitrogen in water and soil extracts[J]. Communications in Soil Science and Plant Analysis, 1995, 26(1-2):303-316 DUAN L X, MA X, JU Z L, et al. Impact of reduced and split nitrogen fertilization on oat biomass and nitrogen use efficiency in alpine regions[J]. Acta Agrestia Sinica, 2024, 32(10):3185-3193 段连学, 马祥, 琚泽亮, 等. 高寒地区氮肥减量分期施用对燕麦生物量及氮肥利用率的影响[J]. 草地学报, 2024, 32(10):3185-3193 DUAN Y K, YANG H Y, WU W L, et al. Molecular mechanisms of nitrogen absorption, transport, and assimilation in plants[J]. Fujian Journal of Agricultural Sciences, 2022, 37(4):547-554 段永康, 杨海燕, 吴文龙, 等. 植物氮素吸收、转运和同化的分子机制[J]. 福建农业学报, 2022, 37(4):547-554 ZHANG Y M, CHEN D, ZHANG J B, et al. Ammonia volatilization and denitrification losses from an irrigated maize-wheat rotation field in the north china plain[J]. Pedosphere, 2004, 14(4):533-540 TIAN Y L, ZHANG Y X, ZHU A M, et al. Effect of nitrogen application on yield and nitrogen use efficiency of forage oat in Horqin sandy land[J]. Grassland and Turf, 2018, 38(5):54-58 田永雷, 张玉霞, 朱爱民, 等. 施氮对科尔沁沙地饲用燕麦产量及氮肥利用率的影响[J]. 草原与草坪, 2018, 38(5):54-58 MA X L, MA X, JU Z L, et al. Effects of nitrogen fertilizer reduction and nitroge application period on photosynthetic characteristics and yield of oat in alpine regions[J]. Acta Agrestia Sinica, 2024, 32(10):3215-3224 马小龙, 马祥, 琚泽亮, 等. 氮肥减施与施氮时期对高寒区燕麦光合特性及产量的影响[J]. 草地学报, 2024, 32(10):3215-3224 CUI J, YU C, QIAO N, et al. Plant preference for NH4+ versus NO3- at different growth stages in an alpine agroecosystem[J]. Field Crops Research, 2017, 201:192-199 THERS H, PETERSEN SO, ELSGAARD L. DMPP reduced nitrification, but not annual N2O emissions from mineral fertilizer applied to oilseed rape on a sandy loam soil[J]. GCB Bioenergy, 2019, 11(12):1396-1407 WANG J X, ZHANG F, ZHANG K Y, et al. Effects of reducing nitrogen fertilizers and increasing dmpp on nitrogen absorption and utilization in sorghum[J]. Crops, 2024, (1):126-131 王佳旭, 张飞, 张旷野, 等. 减氮增施DMPP对高粱氮素吸收与利用的影响[J]. 作物杂志, 2024, (1):126-131 KAN J L, WANG X Y, SU J P, et al. Effects of different nitrogen fertilizer inhibitors on wheat yield, soil fertility and nitrogen use efficiency[J]. Chinese Agricultural Science Bulletin, 2023, 39(5):69-74 阚建鸾, 王晓云, 苏建平, 等. 不同氮肥抑制剂对小麦产量、土壤肥力、氮肥利用率的影响[J]. 中国农学通报, 2023, 39(5):69-74 ZHANG M Y. Twonitrogen fertilizer synergists and their combinations for dry wheat Effects of nitrogen use[D]. Gansu: Gansu Agricultural University, 2021:52-53 张梦莹. NBPT和DMPP及其组合对旱作小麦氮素利用的影响[D]. 甘肃:甘肃农业大学, 2021:52-53 DONG H, LI W, ENEJI A E, et al. Nitrogen rate and plant density effects on yield and late-season leaf senescence of cotton raised on a saline field[J]. Field Crops Research, 2012, 126(1):137-144 XIAO Y, XU J, NIU C Y, et al. Effects of combined application of slow-release nitrogen and quick-available nitrogen on photosynthetic characteristics, yield and quality of dryland wheat [J]. Jiangsu Agricultural Sciences, 2025, 53(6):111-118 肖宇, 徐婧, 牛翠云, 等. 缓释氮和速效氮配施对旱地小麦光合特性、产量及品质的影响[J]. 江苏农业科学, 2025, 53(6):111-118)
Effects of Reduced-staged Nitrogen Application and Nitrification Inhibitors on the Nitrogen Use Efficiency of Forage Oats
XU Han-yu1, XU Zhen-peng2, LI Jia-xing1, SUN Wen-long1, HU Mei-ting1, GAO Kai1, AN Hai-bo1
Affiliations
1 College of Grassland Science, University of Inner Mongolia Mizu University, Tongliao, Inner Mongolia 028000, China; 2 Ulanqab Agricultural and Forestry Science Institute, Ulanqab, Inner Mongolia 012000, China
To investigate the effects of staged nitrogen (N) application combined with the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on nitrogen uptake, utilization, and yield of forage oat (Avena sativa L.), a field experiment was conducted with seven N fertilizer treatments: no N application (CK), conventional N application (105 kg·hm-2, N105; 210 kg·hm-2, N210; 300 kg·hm-2, N300), reduced-staged optimized N application (168 kg·hm-2, O168), and reduced-staged optimized N application combined with DMPP (O168+D, O144+D) The results showed that compared with conventional N application, the O168+D treatment achieved the highest yield of 7412.13 kg·hm-2, which was significantly higher than that of under conventional N application (P<0.05). Compared to the N210 treatment, the oat plant nitrogen uptake, nitrogen agronomic efficiency, and nitrogen use efficiency increased by 4.90%, 48.51%, and 6.44% in O168+D treatment, respectively. Therefore, under the condition of Horqin aeolian sandy soil, the optimized treatment-combining reduced-staged application of N with DMPP can increase the yield and improve the N use efficiency of forage oat. These findings provide a theoretical basis for enhancing the yield of forage oat and optimizing N fertilizer application in the Horqin Sandy Land.
XU Han-yu, XU Zhen-peng, LI Jia-xing, SUN Wen-long, HU Mei-ting, GAO Kai, AN Hai-bo.
Effects of Reduced-staged Nitrogen Application and Nitrification Inhibitors on the Nitrogen Use Efficiency of Forage Oats[J].
Acta Agrestia Sinica,
2026
, 34
(7)
: 2721
-2729
.
DOI: 10.11733/j.issn.1007-0435.2026.07.033
JU X T, GU B J. Status-quo, problem and trend of nitrogen fertilization in China[J]. Journal of Plant Nutrition and Fertilizer, 2014, 20(4):783-795 巨晓棠, 谷保静. 我国农田氮肥施用现状、问题及趋势[J]. 植物营养与肥料学报, 2014, 20(4):783-795 REN K Y, DUAN Y H, XU M G, et al. Effect of manure application on nitrogen use efficiency of crops in china: a meta-analysis[J]. Scientia Agricultura Sinica, 2019, 52(17):2983-2996 任科宇, 段英华, 徐明岗, 等. 施用有机肥对我国作物氮肥利用率影响的整合分析[J]. 中国农业科学, 2019, 52(17):2983-2996 JU X T, ZHANG F S. Thinking about nitrogen recovery rate[J]. Ecology and Environmental Sciences, 2003, 2:192-197 巨晓棠, 张福锁. 关于氮肥利用率的思考[J]. 生态环境, 2003, 2:192-197 ZHU Z L. Loss of fertilizer N from plants-soil system and the strategies and techniques for its reduction[J]. Soil and Environmental Sciences, 2000, 1:1-6 朱兆良. 农田中氮肥的损失与对策[J]. 土壤与环境, 2000, 1:1-6 KLIMASMITH I M, KENT A D. Micromanaging the nitrogen cycle in agroecosystems[J]. Trends in Microbiology, 2022, 30(11):1045-1055 LIU X J, SHA Z P, SONG Y, et al. China’s atmospheric ammonia emission characteristics, mitigation options and policy recommendations[J]. Research of Environmental Sciences, 2021, 34(1):149-157 刘学军, 沙志鹏, 宋宇, 等. 我国大气氨的排放特征、减排技术与政策建议[J]. 环境科学研究, 2021, 34(1):149-157 KANG L X, LUO W G, HOU Z A, et al. Effects of nitrification inhibitors on nitrous oxide emissions, main crop yield and nitrogen use efficiency in cropland in china: a meta-analysis[J]. Chinese Agricultural Science Bulletin, 2024, 40(32):107-115 康丽霞, 罗维贵, 侯振安, 等. 硝化抑制剂影响中国农田氧化亚氮排放、主要作物产量及氮肥利用率的Meta分析[J]. 中国农学通报, 2024, 40(32):107-115 CHEN H B, CHEN J, DU A H, et al. Nitrification inhibitors improve nitrogen use efficiency in farmland[J]. Agricultural Equipment & Technology, 2019, 45(4):32-34 陈海波, 陈娟, 杜爱华, 等. 硝化抑制剂提高农田氮肥利用率[J]. 农业装备技术, 2019, 45(4):32-34 YUAN W L, CUI L, MEI S Y, et al. Technology of increasing nitrogen use efficiency for crops[J]. Modern Agricultural Science and Technology, 2013, 5:244, 250 袁伟玲, 崔磊, 梅时勇, 等. 提高作物氮肥利用率的技术措施[J]. 现代农业科技, 2013, 5:244, 250 YOU L C, LI D P, CUI L, et al. Effects of different nitrification inhibitor combinations on the transformation of ammonium nitrogen in black soil and cinnamon soil[J]. Journal of Plant Nutrition and Fertilizer, 2019, 25(12):2113-2121 油伦成, 李东坡, 崔磊, 等. 不同硝化抑制剂组合对铵态氮在黑土和褐土中转化的影响[J]. 植物营养与肥料学报, 2019, 25(12):2113-2121 YANG Z C, REN M W, YUAN F F, et al. The Effect of nitrification inhibitor on crop rhizosphere soil pH andfertilizer utilization rate[J]. Fertilizer & Health, 2025, 52(3):16-19 杨自超, 任孟伟, 袁方方, 等. 硝化抑制剂对作物根际土壤pH及肥料利用率的影响[J]. 肥料与健康, 2025, 52(3):16-19 HU J Y, ZHANG J, KONG B, et al. Application and prospect of nitrogen fertilizer synergists[J]. Fertilizer & Health, 2023, 50(1):1-13 胡佳玉, 张晶, 孔波, 等. 氮肥增效剂的应用与展望[J]. 肥料与健康, 2023, 50(1):1-13 ABALOS D, JEFFERY S, SANZ-COBEN A, et al. Meta-analysis of the effect of urease and nitrification inhibitors on crop productivity and nitrogen use efficiency[J]. Agriculture, Ecosystems&Environment, 2014, 189:136-144 WANG W, LI Y, WANG W, et al. Global meta-analysis of individual and combined nitrogen inhibitors:enhancing plant productivity and reducing environmental losses[J]. Global Change Biology, 2024, 30(12):e70007 LIU Z Y, LIU G, ZHANG Y X, et al. Effects of nitrogen fertilizer application and mixing ratio on grass forage yield of oat-pea forage crops interspecific relationships[J]. Agricultural Research in the Arid Areas, 2024, 42(5):109-117 刘泽宇, 刘罡, 张玉霞, 等.氮肥用量和混播比例对麦豆混播草地饲草产量及种间关系的影响[J]. 干旱地区农业研究, 2024, 42(5):109-117 CAO W J, LI Y Q, CHEN Y P, et al. Soil stoichiometric characteristics under different land use types in the Horqin Sandy Land, China[J]. Chinese Journal of Applied Ecology, 2022, 33(12):3312-3320 曹雯婕, 李玉强, 陈银萍, 等. 科尔沁沙地不同土地利用类型土壤化学计量特征[J]. 应用生态学报, 2022, 33(12):3312-3320 PAL V, GILL R, SINGH R. Impact of nitrogen application on fodder quality and yield parameters of oats:a review[J]. The Pharma Innovation Journal, 2021, 10(5):1429-1431 WANG L, ZHANG Y X, YU H R, et al. Effects of nitrogen fertilizer application on growth characteristics and yield of oats in sandy land[J]. Pratacultural Science, 2017, 34(7):1516-1521 王乐, 张玉霞, 于华荣, 等. 氮肥对沙地燕麦生长特性及产量的影响[J]. 草业科学, 2017, 34(7):1516-1521 ZHANG Y X, WANG X, ZHANG Q X, et al. Effects of nitrogen application level on dry matter accumulation and nitrogen absorption and utilization of different forage oat in sandy land habitat[J]. Journal of Northwest A&F University (Natural Science Edition), 2022, 50(4):93-99, 107 张玉霞, 王鑫, 张庆昕, 等. 施氮水平对沙地生境下不同饲用燕麦品种干物质积累及氮素吸收利用的影响[J]. 西北农林科技大学学报(自然科学版), 2022, 50(4):93-99, 107 BAO S D. Soil and Agricultural Chemistry Analysis[M]. Beijing: China Agriculture Press, 2000: 鲍士旦. 土壤农化分析[M]. 北京:中国农业出版社, 2000: EASLON H M, BLOOM A J. Easy leaf area:automated digital image analysis for rapid and accurate measurement of leaf area[J]. Applications in Plant Sciences, 2014, 2(7):1400033 HAO J J, KANG Z L, YU Y. Plant physiology experimental technology[M]. Beijing: Chemical Industry Press, 2006:68 郝建军, 康宗利, 于洋. 植物生理学实验技术[M]. 北京:化学工业出版社, 2006:68 SIMS G K, ELLSWORTH T R, MULVANEY R L. Microscale determination of inorganic nitrogen in water and soil extracts[J]. Communications in Soil Science and Plant Analysis, 1995, 26(1-2):303-316 DUAN L X, MA X, JU Z L, et al. Impact of reduced and split nitrogen fertilization on oat biomass and nitrogen use efficiency in alpine regions[J]. Acta Agrestia Sinica, 2024, 32(10):3185-3193 段连学, 马祥, 琚泽亮, 等. 高寒地区氮肥减量分期施用对燕麦生物量及氮肥利用率的影响[J]. 草地学报, 2024, 32(10):3185-3193 DUAN Y K, YANG H Y, WU W L, et al. Molecular mechanisms of nitrogen absorption, transport, and assimilation in plants[J]. 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