Long Term Fertilization of NPK and Zn Fertilizer on Soil Fertility and Crop Yield
Zhang Guoyin, Ru Shuhua, Sun Shiyou, Wang Ling, Geng Nuan, Chen Guijin
ACTA AGRICULTURAE BOREALI-SINICA . 2013, (3): 217 -221 .  DOI: 10.3969/j.issn.1000-7091.2013.03.039