About Chen Jifeng
About School of Life Science,Zhengzhou University
About Sun Hui
About School of Life Science,Zhengzhou University
About Xia Yang
About Yexian Branch of Pingdingshan Tobacco Company
About Cai Kaixuan
About School of Life Science,Zhengzhou University
About Liu Hongyuan
About Distance Learning School,Zhengzhou University
About Zhao Songhui
About School of Life Science,Zhengzhou University
About Li Yuanyuan
About School of Life Science,Zhengzhou University
About Z Heng Ya'Nan
About Henan Electric Power Company,State Grid Corporation
About Guo Ruiliang
About School of Life Science,Zhengzhou University
About Henan Nongye Kexue
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About invertase
About tobacco(favorite)
About nitrogen
About urease
About enzyme activity
About cultivar
About phosphorus
About catalase
About soil enzyme
About continuous cropping
About potassium
About acid phosphatase
About soil fertility
About 全窒素
About 土壌酵素活性
About flue-cured tobacco
About continuous cropping
About soil nutrients
About enzyme activity
About Henan province
About Soil organisms
About Soil chemistry
About 連作
About 土壌酵素活性
About 栄養素
About 含有量