Past, present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses

文献类型： 外文期刊

第一作者： Li, Haigang

作者： Li, Haigang;Li, Guohua;Shen, Jianbo;Zhang, Fusuo;Liu, Jian;Liu, Jian;Bergstrom, Lars

作者机构：

关键词： Phosphorus management zone;Olsen P;Environment;Crop yield;Phosphorus loss

期刊名称：AMBIO （ 影响因子：5.129； 五年影响因子：6.019 ）

ISSN： 0044-7447

年卷期： 2015 年 44 卷

页码：

收录情况： SCI

摘要： 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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