Compared with the check, Panax quinquefolium L. leaves spurted with B9 and PP333,chla, chlb, chl(a+b), chla/chlb, Sc and transpiration rate are improved distinctly.

• 喷施B9和PP333后，与未处理的对照相比，西洋参叶片叶绿素a、叶绿素b、叶绿素(a+b)总含量、叶绿素a/b比值、气孔导度以及蒸腾速率均有明显提高。