Laboratory studies were conducted to establish the method of grinded plant tissue powder mixed with agar (PPA) to determine the allelopathic activity of leaf powder of 40 plant species.

• 摘要通过室内研究，建立了将植物组织的粉末混入0.；5%25琼脂溶液中冷凝后来测定植物化感作用的“琼脂混粉法”，并利用该方法对40种园林植物叶片进行了测定。