Welcome to Chinese Agricultural Science Bulletin,
CASB
Effects of Long-term Fertilization and Irrigation on Soil Nutrient Distribution in Profiles of Loess Soil
Gu Qiaozhen, Yang Xueyun, Sun Benhua, Ma Lujun, Tong Yanan, Zhao Bingqiang, Zhang Fudao
Chinese Agricultural Science Bulletin . 2004, (5): 139 -139 .  DOI: 10.11924/j.issn.1000-6850.0405139