The results showed that the allelopathic effects of extracts from Root-zone soil of Panax notoginseng on root length, seedling height, and fresh weight and NR activity of notoginseng were different.

• 结果显示，不同极性的三七根区土壤提取物对三七幼苗的根长、苗高、鲜重、硝酸还原酶活性均有不同的化感作用。