EFFECTS OF N, P, AND K ON CHEMICAL COMPOSITION OF BARLEY GROWN ON A LOW-FERTILITY PODZOL SOIL IN THE GREENHOUSE

[摘要] ChemicalcompositionofHertabarley(HordeumdistichonL.)growninthegreenhouseonanextremelylow-fertilityPodzolsoilasinfluencedbyN,P,andKfertilizationwasinvestigatedinrelationtofeedqualityandstrawstrength.Twoexperiments,a6 × 6NPfactorialonthelow-Psoilanda6 × 6NKfactorialonthelow-Ksoil,weresimultaneouslyconductedtoexaminechemicalcompositionofbarleysampledatearlyvegetative,mid-vegetative,andmaturestageofgrowth.PercentproteinNandnonproteinN(NPN)invegetativetissueandgrainincreasedwithsuccessiveratesofN,whereastheydecreasedasPandKrateswereincreased.TheN × KinteractioneffectsongrainyieldandproteinNweregreaterthantheN × Pinteractioneffects.PercentNPNwasconsiderablyhigherinvegetativetissuethaningrain.Itappearedthatalow-percentKandahigh-percentCaratherthanahigh-percentNPNinvegetativetissuewereassociatedwithlodging.PercentCaandMginvegetativetissueincreasedwithincr...

[学科分类] 农业科学（综合）