中国农学通报2025，Vol.41Issue(30)：1-7,7.
施氮量对小麦叶绿素含量、农艺性状与产量的影响
Effects of Nitrogen Application on Chlorophyll Content,Agronomic Traits and Yield of Wheat
摘要
Abstract
This study aimed to investigate the effects of nitrogen application rates on chlorophyll content,agronomic traits,and yield of wheat in the Yili River Valley region,and to further elucidate the relationship between agronomic traits and yield.Eight widely cultivated wheat varieties in the region were selected as experimental materials,and three nitrogen levels were established:N1(180 kg/hm2),N2(270 kg/hm2),and N3(360 kg/hm2).Field trials and indoor seed inspection data were integrated with statistical methods,including correlation analysis and grey relational analysis,to examine the relationships among nitrogen application rates,agronomic traits,and yield.The results indicated that nitrogen application had the greatest effect on chlorophyll content during the late grain-filling stage.Within the range of 180-270 kg/hm2 nitrogen application,agronomic traits such as plant height,spike number,spikelet number per spike,as well as yield,increased with nitrogen rate,except for grain weight per main spike and 1000-grain weight.Among all traits,spike number exhibited the strongest positive correlation with yield,whereas 1000-grain weight showed a negative but non-significant correlation.The order of grey correlation degree between agronomic traits and yield was main spike length(0.66)>spikelet number(0.62)>plant number(0.58)>aboveground biomass(0.57)=flag leaf SPAD value(0.57)>main spike grain weight(0.54)=plant height(0.54)>effective tiller number(0.52).The order of grey correlation degree between yield components and yield was spike number(0.74)>1000-grain weight(0.56)>grain number per spike(0.47).Both correlation analysis and grey relational analysis consistently demonstrated that spike number was the most influential factor affecting yield.Under the N2 treatment,chlorophyll content,agronomic performance,and yield of wheat were collectively optimized.关键词
小麦/施氮量/灌浆期/叶绿素含量/农艺性状/产量Key words
wheat/nitrogen application rate/grain-filling stage/chlorophyll content/agronomic traits/yield分类
农业科技引用本文复制引用
杨蕙,张志辉,马林,黄倩楠,张学慧,登斯拉木・吐尔拜逊,孙娜,邹辉..施氮量对小麦叶绿素含量、农艺性状与产量的影响[J].中国农学通报,2025,41(30):1-7,7.基金项目
伊犁州科技计划项目"小麦氮高效品种的评价筛选及示范推广"(YZ2022A006) （YZ2022A006）
伊犁州科技计划项目"尼勒克县地表水综合数智高效农用关键技术研究与示范"(YZD2024A01) （YZD2024A01）
新疆现代农业小麦产业技术体系(XJARS-01). （XJARS-01）
