The content of metal elements (K, Ca, Na, Mg, Fe, Zn and Mn) of the leaves and the soil sample is menstruated by AAS. We analyze the adjustment mode of hormones and metal elements during the upgrowth of heteromorphism leaf.

• 应用火焰原子吸收分光光度法，测定了胡杨不同叶型中的K、Ca、Na、Mg、Fe、Zn、Mn等七种元素含量以及土壤中相应的可吸收态金属元素含量。