title: Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses.
abstract: Large inputs of phosphorus (P) in chemical fertilizers and feed supplements since 1978 have improved soil P status in arable land in China, but have also created challenges by increasing P concentrations in manure and exacerbating water quality degradation. Arable land in China can be divided into five management zones based on soil P chemistry, with 15-92 % of arable land having lower P status than the agronomic optimum and 0.3-7.2 % having severe risks of P leaching losses. A scenario analysis of soil P budget and agronomic P demand during 2011-2030 highlighted the great pressure China faces in sustainable P management and the need for drastic changes in current practices. This includes new policies to reduce P supplementation of feed and improved P use efficiency by livestock and programs to expand the adoption of appropriate fertilization, soil conservation, and drainage management practices to minimize P losses.
authors: Center for Resources, Environment and Food Security (CREFS), China Agricultural University, 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China, haigangli@cau.edu.cn.
authors: Haigang
authors: H
authors: Li
authors: Jian
authors: J
authors: Liu
authors: Guohua
authors: G
authors: Li
authors: Jianbo
authors: J
authors: Shen
authors: Lars
authors: L
authors: Bergström
authors: Fusuo
authors: F
authors: Zhang
mesh_terms: D000383:Agriculture; D005308:Fertilizers; D010758:Phosphorus / Q000032:analysis*
chemical_list: D005308:Fertilizers; D010758:Phosphorus