China Agriculture University Li Hongwen, Ph.D, Professor, Changjiang Scholar, China Agricultural University Taishan Scholar; Shandong University of technology; Head, Conservation Tillage Research Center (CTRC), MOA, P.R.C; Chairman of Agri Mechanization Committee of China Society of Agri Engineering. Study conservation tillage since 1992; more than 200 papers and 80 patents on conservation tillage; Outstanding scientific and