华北农学报2025，Vol.40Issue(2)：117-126,10.DOI:10.7668/hbnxb.20195014
叶面肥不同施氮量对玉米氮素积累转运利用的影响
Effects of Different Nitrogen Application Amounts of Foliar Fertilizers on Nitrogen Accumulation,Translocation and Utilization in Maize
摘要
Abstract
The aim was to elucidate the effects of different foliar fertilizer nitrogen application amounts on ni-trogen accumulation,translocation,and utilization in maize.This experiment was conducted in 2021-2022 using a randomized block design,with maize variety Lihe 1 as the research object.No fertilization treatment(CK),conven-tional root fertilization treatment(CF),foliar nitrogen reduction treatment of 20％(LF1),foliar conventional nitro-gen application treatment(LF2),and foliar nitrogen increase treatment of 20％(LF3)were set up to analyze the differences in nitrogen accumulation,translocation,and utilization of maize under different nitrogen fertilizer applica-tion amounts,no fertilization and conventional root fertilization.The results showed that the nitrogen accumulation in maize stems and leaves showed a trend of first increasing and then decreasing with the advancement of the growth stage,reaching the maximum value at the tasseling and silking stage.The nitrogen accumulation per plant gradually increased with the advancement of the growth stage and reached its maximum value at mature stage,the nitrogen ac-cumulation per plant was highest in the LF2 treatment.The proportion of nitrogen distribution in leaves was highest before the silking stage;after the silking stage,the proportion of nitrogen distribution in grains gradually increased,reaching its peak at mature stage.The CK had the lowest proportion of nitrogen accumulation in grains,while the LF1 treatment had the highest proportion of nitrogen distribution in grains in 2021,and the LF3 treatment had the highest proportion of nitrogen distribution in grains in 2022.The nitrogen transport rate and the contribution rate of nitrogen transport to grains first increased and then decreased with the increase of nitrogen application amounts,the nitrogen harvest index and nitrogen utilization efficiency decreased with the increase of nitrogen application a-mounts;in 2021 and 2022,the nitrogen utilization efficiency of LF1 treatment,LF2 treatment,and LF3 treatment was higher than that of CF treatment,and the nitrogen utilization efficiency of LF1 treatment was the highest.The nitro-gen absorption efficiency of foliar nitrogen application treatment for two years was higher than that of CF treatment.There were no significant differences in ear length,ear thickness,and ear row number among the treatments.CK had the longest bald tip length,and the row number and hundred grain weight of each nitrogen application treatment were higher than those of CK.CF treatment had the highest biological yield,while LF1 treatment had the highest grain yield and harvest index.The grain yield of each treatment was significantly higher than CK,and the harvest in-dex decreased with increasing nitrogen application amounts.Therefore,maize can achieve better growth effects under LF1 foliar nitrogen application in the central and western regions of Inner Mongolia.关键词
玉米/叶面肥/施氮量/氮素利用率Key words
Maize/Foliar fertilizer/Nitrogen application amount/Nitrogen utilization efficiency分类
农业科技引用本文复制引用
张旭婷,张海龙,张佳倩,刘亚楠,张德健,付增娟,薛春雷,张赛楠,孙峰成..叶面肥不同施氮量对玉米氮素积累转运利用的影响[J].华北农学报,2025,40(2):117-126,10.基金项目
内蒙古自然科学基金面上项目(2022MS03068) （2022MS03068）
内蒙古自治区农牧业科技转移转化资金项目(2022TG12) （2022TG12）
