Study on Relationship Between the Maximal Fluorescence Ratio and Meteorological Factors

摘要

The quantitative relationship among crop growth and its surrounding factors is the base for rational irrigation, which is important for the increase of water and the improvement of farmland environment. In this article, applying grey system theory analysis the relationship between the maximal fluorescence ratio and meteorological factors in winter wheat of Hebei plain area. The result indicated that the magnitude on grey correlation degree between the maximal fluorescence ratio (Fv/Fm) and meteorological factors are the ground temperature, leaf temperature, bulk water ratio and air temperature.