SDUDY OF ZNIC RELATIVE CONCENTRATION AND STATE IN RUMEN FLUID BY XANES Effect of different types of sulphur fertilizer on oilseed rape zinc uptake Effects of N and Zn interaction on yield and contents of N and Zn in grains of rice Response of wheat grain Zn concentration to foliar sprayed Zn in main wheat production regions of China Effects of long-term N and P fertilization with different rates on Zn concentration in grain of winter wheat Effects of soil and foliar applications of Zn on winter wheat grain Zn concentration and bioavailability Effect of varying combination of P and Zn in chelater-buffered solution on P-Zn interaction in wheat seedling