经过两年对一年生当归生产中的应用研究，发现用300mg/LPP₃₃₃于幼苗期进行叶面喷施，可以显著提高单根鲜重和干重，明显增加当归灰分，尤其是酸溶性灰分以及酸浸出物含量。因此，此技术是当归生产中增产优质的低耗高效技术。

After two years' study on the application of PP3 to one-year-grown Angelica sireensis（Oliv.）Diels.,it was found that spraying300mg/L PP33} on the seedlings markedly increased the average fresh and dry weight of its root,as well as the ash content especialy its acid-soluble ash and alcohol-soluble substance. Thus,this method can inereasenot only the yield but also improve its quality,which is a low-investment and high-yield way for the production of A. sinensis（Oliv.）Diels.

湖北省教委资助