Relationships between Zn²⁺ Pollution and Spectral Characteristics of Wheat

Effects of Zn²⁺ pollution on Zn²⁺ uptake,chlorophyll concentration and characteristics of visible-near infrared spectrum of wheat（Triticum aestivum）were studied with solution culture,and relationships between them were discussed.The results indicate that the content of Zn²⁺ in Triticum aestivum increased while the concentration of chlorophyll decreased with the increase in Zn²⁺ concentration in the solution.Corresponding change in spectral characteristics of the leaves of the plant was observed.The spectral reflectivity ascended in the visible light zone and the strength of blue shift of the red edge intensified,showing significant correlationship.Meanwhile Zn²⁺ pollution affected spectral reflectivity of the leaves in the near infrared band,but the correlativity between the two was not so significant.