"2+X"氮肥总量控制对设施蔬菜生长及土壤质量的影响

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中图分类号：S-3 文献标志码：A 文章编号：2096-9902（2025）24-0040-04

Abstract：Thepurposeofthisexperimentistostudytheefectsofdiferentnitrogenfertilizerapplicationratesonthe growth，yield，quality，soilquality，andeconomicbenefitsofchickenfeathervegetablesthroughafieldexperimentwith" 2+ X" totalnitrogenferilizercontrol.Theexperimentsetupfivetreatments：nitrogenfreezone，75%otimizednitrogenoptimized nitrogen zone， 125% optimizednitrogen，and habitual fertilization.Theresultsshowed that moderateapplicationof nitrogen ferilizercansignificantlypromoteteincreaseofplantheight，stethicknessandchlorophllontentinchickenhairgetables. Theoptimizednitrogenzone（16kg/u）showedexcellntperfomanceinyield（33kg/667m）andferilizerpartialproductivity （616.7 kg/kg），achieving a balance between high yield and efficientnutrientutilization.Although the 125% optimized treatment hadthehighestyield（867kg/667m），herewereissofsoilcidificationsaltaccumulationanddecreasdfertlizerutlaio fficiency.Theeconomicbenefitanalysisshowsthatthenetincomefromtheoptimizedntrogenzonereaches4O44yuan/667m2， theinput-inputratioisreasonable，andthecomprehensivebenefitisthebest.Therefore，itisrecommendedtoadoptan optimizednitrogenareafertilizationplanintheproductionofchickencabbageinfacitestoachevecordinatedimprovemntof highcropyields，efcient fertilizer fertilizers，soil health and economic returns.

Keywords：" 2+ X"total nitrogen fertilizer control;protected vegetable;yield; economic benefit；soil quality

设施蔬菜作为现代农业的重要组成部分，在保障蔬菜周年供应、提高土地利用率与农民增收方面具有重要作用。（剩余5651字）