苗期浇肥对洋葱生长及叶片碳代谢的影响

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中图分类号：S633.2 文献标识码：A 文章编号：1006-060X（2026）01-0051-05

Abstract：Thisstudyaimstoexploretheefectoffertilizerapplicationatseedlingstageonthegrowthandleafcarbonmetabolism fAllumcepaL.anddeterminethesuitablefertizationdosage.ThevarietyZibaol'wasusedfortepotexperiment，whichwas designed with sixtreatments： nofertilization（CK），conventional single basal fertilization（T1），basal fertilization + conventional topdressing in soil （T2），basal fertilization + liquid topdressing at conventional dosage （T3），basal fertilizer + liquid topdressing at areduceddosage（T4），and basal fertilizer + liquid topdressing at an increased dosage （T5）.The biomass accumulation and carbon metabolism-related indicators of A .cepa were systematically analyzed. The results showed that T2-T5 outperformed CK and T1 intermsof the growthand metabolismindicators.Among them，T3hadthebestoverallperformance，especiallyinincreasingthe biomass，activities of carbon metabolism enzymes （ -amylase， β -amylase， amylase，and sucrase），and accumulation of soluble sugars （totalsugar，reducingsugarandsucrose）andstarchinleavesT5adsimilarcarbonmetabolismindicatostoT，whileitsbiomass accumulationwaslowerthan thatofT3.Theplant growthand metabolism-promotingefectofT4 wassignificantlyweakerthanthatof T3 andT5.ComprehensiveanalysissuggestedthatT3was theapropriatetreatmentforpromoting thegrowthandcarbonmetabolism of A. cepa at the seedling stage.

Keywords：Allium cepaL.;amylase; sucrase; starch; total sugar

洋葱（AlliumcepaL.）是云南省重要的蔬菜作物，近年来其种植面积持续扩大，产量与品质稳步提升。（剩余6646字）