RT Journal Article SR Electronic T1 Training programs and in-the-field guidance to reduce China's overuse of fertilizer without hurting profitability JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 165A OP 167A DO 10.2489/jswc.63.5.165A VO 63 IS 5 A1 Huang, Jikun A1 Hu, Ruifa A1 Cao, Jianmin A1 Rozelle, Scott YR 2008 UL http://www.jswconline.org/content/63/5/165A.abstract AB