尾巨桉化感作用对广金钱草化学成分的影响

Effect of Eucalyptus urophylla×Eucalyptus grandis Allelopathy on Chemical Components of Desmodium styracifolium (Osb.) Merr.

【目的】研究尾巨桉Eucalyptus urophylla×Eucalyptus grandis对广金钱草Desmodium styracifolium(Osb.)Merr.药材化学成分的影响,探索尾巨桉-广金钱草复合经营模式的可行性。【方法】在试验田中,以不同类型和重量的尾巨桉落叶铺盖在土壤上并种植广金钱草,同时另在尾巨桉人工林中直接套种广金钱草,待药材成熟后统计其产量,并利用HPLC指纹图谱法及含量测定法检测其化学成分变化。【结果】广金钱草在尾巨桉林下种植时,产量稍有下降,但药材指纹图谱与正常种植无显著差异。【结论】广金钱草可以套种在尾巨桉人工林下。

【Objective】The chemical component variation of Desmodium styracifolium(Osb.)Merr.intercropping in Eucalyptus urophylla×Eucalyptus grandis plantation was studied to explore the feasibility of E.urophylla × E.grandis and Desmodium styracifolium(Osb.)Merr.composite model.【Methods】Desmodium styracifolium(Osb.)Merr.was planted in a bare land with different weight of E.urophylla ×E.grandis leaves covering on soils,which was also cultivated in E.urophylla × E.grandis plantation. The yield of Desmodium styracifolium(Osb.)Merr.was recorded after harvesting.Moreover,HPLC fingerprint method and determination of schaftoside were established to detect its chemical component variation.【Results】The yield of D.styracifolium(Osb.)Merr.cultivated in Eucalyptus forest decreased slightly,but its chemical fingerprints showed no obvious difference compared with the material which was normally cultivated.【Conclusion】D.styracifolium(Osb.)Merr.can interplant in Eucalyptus Plantations.