微肥对益母草生长和总生物碱积累的调控效应

Regulation on Growth and Accumulation of Total Alkaloid in Leonurus artemisia (Lour.)S.Y.Hu by Various Microfertilizers

目的 追踪不同微肥对益母草生长和总生物碱积累的调控效应。方法：采用分光光度法测定益母草总生物碱含量。结果：不同浓度的微肥对益母草的生长都有不同程度的促进作用，特别是正常浓度的锰肥和过量浓度的铜肥，能显著提高益母草的单位产量，增产幅度分别达４３．６％ 和５５ ．２％ 。不同浓度的微肥都能提高益母草内总生物碱含量，其中，正常浓度的锰肥和过量浓度的硼肥，处理效果最佳，益母草内总生物碱含量分别达２ ．１５％ 和２．０９％ 。正常浓度的锰肥和铜肥对益母草安全越夏，抗性优势最为明显；铁肥处理的益母草，越夏后单位产量有明显的提高。结论：喷施正常浓度的锰肥，对优质、高产益母草的栽培，具有重要的实践意义。

Objective:To trace the effects of various microfertilizers on the growth and accumulation of total alkaloid in Leonurus artemisia. Method:The total alkaloid was determined by spectrophotometry.Result:Microfertilizers of different concentrations could facilitate the growth of L.artemisia in various degrees and Mn fertilizer of standard concentration and Cu fertilizer of excessive concentration could help raise the output of the plant markedly by up to 43.6% and 55.2% respectively. Microfertilizers of different concentrations could improve the content of total alkaloid in L.artemisia :Mn fertilizer of standard concentration and B fertilizer of excessive concentration could enhance the contents of total alkaloid up to 2.15% and 2.09% respectively.Mn fertilizer and Cu fertilizer of standard concentration have been proved very useful in improving the resistibility and ability of the plant to survire summer safely, and Fe fertilizer of standard concentration could bring the plant an obvious increase of output after surviving summer.Conclusion:Application of Mn fertilizer of standard concentration is very important for cultivating L.artemisia of excellent quality and high output.