不同浓度液肥对土壤改良效果的田间试验

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中图分类号：S365 文献标识码：A 文章编号：0488-5368（2025）09-0066-05

Field Experiment on Effects of Different Concentrations of Liquid Fertilizer on Soil Improvement

WANGHui，GUANMin，MARuichen （Shaanxi AgriculturalMachineryResearch InstituteCo.，Ltd.，Xianyang，Shaanxi712Ooo，China）

Abstract：This studyaimed to investigate the effects of diffrentconcentrations of liquid fertilizeron soil improvement.A field experiment was conducted with threetreatments：low-concentration liquid fertilizer（diluted 200-fold），high-concentration liquid fertilizer（diluted 2O-fold），andacontrol.Their effects on soil pH，electrical conductivity（EC），organic matter content，and the levels of nitrogen，phosphorus，potassium，and trace elements werecompared and analyzed.The results indicated that，in the early stage of application，high - concentration liquid fertilizer significantly reduced soil pH and increased the content of total nitrogen and alkali - hydrolyzable nitrogen.In contrast，low-concentration liquid fertilizer was more consistent in increasing soil organic mater and available phosphorus content.Due to its sustained efects and smaller fluctuations in pH，low - concentration liquid fertilizer is more suitable for long-term soil management.

Key words：Soil improvement；Liquid fertilizer;Trace elements

在现代农业生产中，土壤质量是决定作物产量和品质的关键因素之一。（剩余4681字）