萝卜有机氮替代氮肥的综合效应研究

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中图分类号：S631.1 文献标志码：A 文章编号：2096-9902（2025）21-0039-04

Abstract：ThisstudyconductedafieldexperimentinChaichanginHouxiTown，JimeiDistrict，XiamenCitytoreplace nitrogenfertilizerfororganicnitrogeninradish（Baiyuchunvariety）.Theexperimentsetupfourtreatments：habitualfertliation （T1）， 20% organic nitrogen substitution （T2）， 30% substitution （T3），and 50% substitution （T4），so as to systematically explore the effectsofdiferentsubstiuionratiosonadishgrowthyield，qualityandconomicbenefits.TheresultssowedthatTtreatent （ 20% substitution） performed best，increasing the yield by 69.4kg/mu （anincrease of 2.8% ）and increasing the income by 138yuan/mu compared with the control;the optimal substitution proportion was determined to be 27.9% .Organic nitrogen substitution significantly improved quality， reducing sugar increased by O.37～0.99 % ，and nitrate content fluctuated significantly. This test proved that 20～30% organic nitrogen substitution can simultaneously achieve yield improvement，quality optimization and efficiency increase，providing a scientific basis for green production of radish in southeastern Fujian.

Keywords：radish; organicnitrogen substitution;yield formation;qualitycontrol;fertilizationoptimization

化肥过量施用导致的土壤退化、环境污染和农产品品质下降，已成为制约农业可持续发展的核心问题。（剩余5294字）