【摘要】 研究栽培密度对党参生长、产量和次生代谢物合成积累量的影响。试验采用单因素随机区组设计,设置20cm×10 cm、20 cm×15 cm、20 cm×20 cm、30 cm×10 cm和30 cm×15 cm共5个密度处理,分别于8月30日、9月30日和10月20日取样,分析不同密度处理的党参产量、次生代谢物和浸出物的含量,旨在探索甘肃宕昌地区党参合理的栽培密度,为党参规范化栽培提供理论依据。试验结果显示,栽培密度对党参的生长、产量和次生代谢物含量均有较显著的影响,适宜密度不仅可以提高党参的产量,还能在一定程度上提高党参次生代谢物和浸出物的含量。栽培密度为20 cm×10~15 cm时,党参产量和次生代谢物含量均较高,可达到高产优质的目标。研究还发现,甘肃宕昌地区栽培的党参在10月中下旬仍在生长,且浸出物含量符合《中国药典》规定。因此认为,该地区合理的采收期应为10月下旬。更多还原

【Abstract】 To research the effects of planting density on growth,yield and accumulation of secondary metabolites of Codonopsis pilosula,we conducted a single-factor randomized block experiment with 5 planting density treatments: 20 cm × 10 cm,20 cm × 15 cm,20 cm × 20 cm,30 cm × 10 cm,30 cm × 15 cm. The roots were harvested at three different times; 30th August,30 th September and 20 th October. The root yield and secondary metabolite content were subject to statistical analysis. Planting density had a significant effect on growth,yield and secondary metabolite content; yield and secondary metabolite content were much higher in the 20 cm × 10-15 cm treatments. It was also observed that C.pilosula in Tanchang was still growing in late October,and that the quality of the extract conformed with the necessities of the China Pharmacopoeia. Consequently,late October is the suggested harvest period.更多还原