植物生长过程中对营养元素吸收情况分析研究

Study of Nutrients Absorption During Plant Growth

选用三倍体毛白杨的幼苗作为培养材料,选用MS培养基在组培室进行培养,从植物培养15 d开始每隔5 d取样1次,进行培养基中K、Ca、Mg、Zn、Fe、Mn元素的含量测定,以确定在这段时期内植物对上述6种元素的吸收程度。结果表明:Zn、Mn、Ca、Mg在培养物的生长过程中吸收比较均匀,K在早期吸收强烈,后期几乎不吸收。Fe在早期以及后期吸收量比较大,中期吸收量比较少。

Cultured in MS medium in tissue culture room, triploid Chinese white poplar seedlings were used as training materials to study nutrient elements absorption during growth. The medium sample were taken every 5 days since the 15th day, whose K, Ca, Mg, Zn, Fe, Mn content were determined using atomic absorption spectrometer. Experimental results showed an even absorption of Zn, Mn, Ca, and Mg element, a strong K absorption in the early period and almost no K absorption in the late. The seedlings absorbed more Fe element in the early and late growth period than in medium term.