中国生态农业学报（中英文）2026，Vol.34Issue(1)：58-69,12.DOI:10.12357/cjea.20250513
不同施氮量对'郑麦1860'光合特性及籽粒灌浆的影响
Effects of different nitrogen application rates on photosynthetic characteristics and grain filling in wheat cultivar'Zhengmai 1860'
摘要
Abstract
This study aimed to investigate the optimal nitrogen(N)application rate for the high-yield and high-quality cultivation of wheat and to enhance the N fertilizer use efficiency.The wheat cultivar'Zhengmai 1860'was planted with four N application treat-ments:0(N0),90(N1),180(N2),and 240 kg·hm-2(N3).The effects of different N application rates on the photosynthetic character-istics,grain filling process,and yield components of wheat were analyzed.The results demonstrated that N application significantly influenced the photosynthetic characteristics,grain filling process,and yield formation of'Zhengmai 1860'.Appropriate N applica-tion significantly enhanced the efficiency of light energy capture and conversion by increasing the SPAD value and the activity of photosystem Ⅱ(PS Ⅱ),thereby providing sufficient assimilates for grain filling.The two-year average data showed that compared with the N0 treatment,the N2 treatment increased the SPAD value,Fm(maximum fluorescence),Fv/Fm,and Fv/Fo by 16.82％,6.01％,1.59％,and 10.08％,respectively.Moreover,the N2 treatment increased the maximum grain filling rate(Vmax),the time to reach max-imum grain filling rate(Tmax),and the duration of grain filling(T)of'Zhengmai 1860'by 11.16％,4.81％,and 5.68％,respectively,compared with the N0 treatment,further promoting the increase in grain yield.Additionally,the durations of the gradual increase stage,rapid increase stage,and slow increase stage of grain filling(T1,T2,and T3)and their corresponding average filling rates(V1,V2,and V3)were all the highest under the N2 treatment.The N2 treatment resulted in the highest grain yield and 1 000-grain weight,with the grain yield 41.15％,14.05％,and 11.42％higher than that under the N0,N1,and N3 treatments,respectively.The study indicated that a N application rate of 180 kg·hm-2 on the alluvial soil in the Huang-Huai Region was the optimal for'Zhengmai 1860'to achieve the coordinated optimization of photosynthesis,grain filling,and yield under the experimental conditions.关键词
施氮量/小麦/光合特性/籽粒灌浆/产量Key words
nitrogen application/wheat/photosynthetic characteristics/grain filling/yield分类
农业科技引用本文复制引用
宋晓,丁世杰,关涵文,郭腾飞,李青欣,徐丹丹,张珂珂,岳艳军,岳克,黄绍敏..不同施氮量对'郑麦1860'光合特性及籽粒灌浆的影响[J].中国生态农业学报（中英文）,2026,34(1):58-69,12.基金项目
国家重点研发计划项目(2023YFD1902705)、河南省农业科学院自主创新项目(2025ZC90)和河南省自然科学基金项目(242300420174)资助 This study was supported by the National Key R&D Program of China(2023YFD1902705),Independent Innovation Project of Henan Academy of Agricultural Sciences(2025ZC90)and Henan Provincial Natural Science Foundation Project(242300420174). （2023YFD1902705）
