草原与草坪2026，Vol.46Issue(1)：80-87,8.DOI:10.13817/j.cnki.cyycp.2026.01.010
秋播高羊茅生长、生理特性及氮需求对氮肥用量的响应
Response of growth,physiological characteristics and nitrogen requirement of autumn-sown tall fescue to nitrogen application rate
摘要
Abstract
[Objective]To clarify the effects of nitrogen(N)fertilizer application on the growth,physiological characteristics,and nutrient absorption of autumn-sown tall fescue(Festuca arundinacea),and to determine the ap-propriate N application rate and N nutrition diagnosis index.[Method]A field micro-plot experiment was conducted to evaluate the responses of the shoot growth,physiological characteristics,N,phosphorus(P)and potassium(K)up-take,and N use efficiency of F.arundinacea to different N fertilizer application rates(0,6,12,18 g/m2)during the overwintering and regreening stages.[Result]Appropriate application of N fertilizer could improve the chlorophyll content,nutrient concentrations,and uptake of F.arundinacea,leading to increased plant height,leaf number,and til-ler count,thereby promoting the growth of the above-ground part.With the increase of N application rate,the content of soluble protein,soluble sugar,and proline increased,and the content of malondialdehyde decreased,which was ben-eficial to enhance the resistance of plants to low-temperature stress and reduce the damage of low temperature.When the amount of N fertilizer was 12 g/m2,the apparent N use efficiency was the highest,which was 36.76%.The suit-able N fertilizer application range for F.arundinacea growth was 6.5～30.2 g/m2,and the critical N concentration for 80%of the maximum shoot dry matter accumulation was 2.95%.[Conclusion]Nitrogen fertilizer application significantly affects the growth and physiological characteristics of F.arundinacea.Nitrogen fertilizer application rate of 6.5 g/m2 and the N concentration of 2.95%in plant shoot can be used as N fertilizer recommendation and plant N nutrition diagnosis for maintenance and management of F.arundinacea.关键词
高羊茅/抗性指标:养分利用效率/氮肥适宜用量/氮营养诊断Key words
tall fescue/resistance index/nutrient use efficiency/the optimum N fertilizer application rate/nitro-gen nutrition diagnosis分类
农业科技引用本文复制引用
米明,董可帅,王鑫,张欣欣,赵俊福,井大炜,司东霞..秋播高羊茅生长、生理特性及氮需求对氮肥用量的响应[J].草原与草坪,2026,46(1):80-87,8.基金项目
聊城大学风景园林学科建设基金(319462212) （319462212）
