期刊
AMBIO
卷 44, 期 -, 页码 S274-S285出版社
SPRINGER
DOI: 10.1007/s13280-015-0633-0
关键词
Phosphorus management zone; Olsen P; Environment; Crop yield; Phosphorus loss
资金
- National Basic Research Program of China [973-2015CB150405]
- Innovative Group Grant of the National Natural Science Foundation of China [31421092]
- Special Fund for Agro-scientific Research in the Public Interest [201003014]
- National Natural Science Foundation of China [31201691, 30925024, 31330070]
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.
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