%A Zhu Dequn; Zhu Xialing; Wang Yan ;Qi Baozi %T Several Physiological Parameters in Relation to Grain Protein Content in Winter Wheat(Triticum aestivum) %0 Journal Article %D 1991 %J Acta Agronomica Sinica %R %P 135-144 %V 17 %N 02 %U {https://zwxb.chinacrops.org/CN/abstract/article_3250.shtml} %8 1991-03-12 %X 7 winter wheat varieties with different grain protein content were grown in thefield in 1986,1987 and 1988.The N content of the leaf,stem,ear and grain,theNRA activity in the main flag leaf of shoot,the dry weight and the activity of rootsdistributed in the cultivated layer up to 30cm deep were meas