丹参合理灌溉研究

为了研究灌溉对丹参的产量和质量的影响,采用田间管灌试验法,对不同土壤含水量下的丹参产量及有效成分含量进行比较研究。结果表明,土壤相对湿度小于30%(特别重度干旱)时,脂溶性成分丹参酮ⅡA、丹参酮Ⅰ和隐丹参酮含量均最高,但是丹参产量低。适度灌溉后,产量大幅提高,有效成分含量符合药典要求。土壤含水量过多时,各有效成分含量均最低。综合丹参药用价值和经济效益,采收前期土壤相对湿度小于30%(特别重度干旱)时,应适度灌溉,可以达到不减产甚至增产的效果。本研究为丹参采收前期土壤水分管理提供了理论依据。

Reasonable irrigation of Salvia miltiorrhiza Bge.

We compared the yield and active ingredient content of Salvia miltiorrhiza Bge. for different soil moisture with field pipe irrigation method to investigate the impacts of irrigation on its yield and quality. Experimental results show that the contents of tanshinone Ⅱ A, tanshinone I, and cryptotanshinone are the highest when relative soil moisture is less than 30% （ especially severe drought）, but its yield is low. Its yield significantly increases after proper irrigation, the content of active ingredients in the requirements of pharmacopoeia. All the active ingredient contents are the lowest when water content of soil is too much. If its medical value and economic benefits are considered together, moderate irrigation is available when relative soil moisture is less than 30%. This can achieve the effect of no yield decrease and even yield increase. Our work can provide theoretical basis for soil water management before its harvest.