腐殖酸尿素追施对弱筋小麦产量构成及氮肥利用率的影响

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中图分类号S512.1文献标识码A文章编号 0517-6611（2025）11-0158-03

doi：10.3969/j. issn.0517-6611. 2025.11. 034

开放科学（资源服务）标识码（OSID）：

The Effects of Topdressng Humic Acid Urea on Yield Components and Nitrogen Use Eficiency of Weak-Gluten Wheat LIU Yao1， CAO Yan2 ，WEI Yi-miao1 et al（1. Xinyang City Academy of Agricultural Sciences， Xinyang，Henan 4640O;2. Henan Xinlianxin Chemical Industry Group Co.，Ltd.，Xinxiang，Henan 453000）

AbstractObetieToinvestgate teectsoftpdresingwitonventioalureaandumicacidureanyieldcomponentsdog useeficiencyinweak-glutenwheat．Method]Afieldexperimentwasconductedwithfourtreatments：CK（nonitrogentopdresing），L2 （topdresingwioventioalurea），L（topresingwithhiccieaty），ndL4（topdressgwihicciduat）e topdressing nitrogen rate was 54kg/hm2 （the mass ratio of base fertilizer to top-dressing was 7：3 ）. Parameters including seedling number， dry matteraccuulationieldomponnts，ndtrogutliatioiicesweremeasedesult]Underthoditioofaplingtio al urea，calcium superphosphate，and potassum chloride as base fertilizers， topdressing humic acid urea at 117kg/hm2 effectively enhanced sedingumberdraeuuaoieldndogensefienciatotablymicciduatoupefod intermsfefetivens.Cocusion]elicatioofhicidurstodresinemostratedbeteryieldiceasingec weak-gluten wheat compared with conventional urea，making it suitable for large-scale promotion and use.

KeywordsHumic acid;Urea;Weak-gluten wheat;Yield;Field experiment

氮素是作物生长的关键营养元素，对作物的发育和产出具有重要影响[1]。（剩余6100字）