Li Haozhe. (1985) A study of NRA and crops tolerance to fertilizer. Plant Physiology Communication，5 (5):14-16 (in Chinese) Shan Lun,Wu Jiujun. (1980) A study on the effects of the physiological characters and soil moisture at milk stage of wheat on milk. Plant Physiology Communication，3:41-46(in Chinese) Sun Jindong. (1989) Regulation of N to photosynthesis and photorespiration of wheat. Journal of Jiangsu Agricultural University，10(4):13-16(in Chinese) Tang Yuwei. (1985a) Inquiry into the correlation of NR and crop tolerence to with fertilizer and its utilizetion in biochemical breeding. Scientia Agriculture Sinica，6:39-45(in Chinese) Tang Yuwei.(19856)Research developments on the application of NRA to agriculture. Agricultural Science end Tenchnics Development 141:1-5 (in Chinese ) Yu Zhonglin，Huang Deming et al.(1987) Effects of the amount of N applied on yields and quality of wheat. Journal of Nanjing Agricultural University ,4:9-16(in Chinese)
