Bowman J C
Ciba Found Symp. 1977(57):243-51. doi: 10.1002/9780470720387.ch13.
A balance sheet for the inputs, uses and outputs of phosphorus in the UK economy has been drawn up. The major import is fertilizer, amounting to about 200 kt P per year. After fertilizers, the other imports (in kt P) are in animal feeds (63), detergents (38) and human food (14). The major outputs are sewage (50), animal excreta (26) and refuse (21); soil losses are about 20 kt. The flowpaths for phosphorus through humans, animals and plants are described. The discrepancy of about 210 kt P/yr is explained by the fact that the amount of phosphorus in the soil increases each year by almost as much as the amount of fertilizer phosphorus added. In view of UK dependence on this imported resource it is suggested that priority is given to work which might eventually have some practical application in preventing or reversing the immobilization of phosphorus in the soil.
英国经济中磷的输入、使用和输出资产负债表已编制完成。主要进口产品是化肥，每年约为200千吨磷。除化肥外，其他进口产品（以千吨磷计）包括动物饲料（63）、洗涤剂（38）和人类食品（14）。主要输出产品是污水（50）、动物粪便（26）和垃圾（21）；土壤流失约为20千吨。描述了磷通过人类、动物和植物的流动路径。每年约210千吨磷的差异是由于土壤中磷的增加量几乎与添加的化肥磷量一样多。鉴于英国对这种进口资源的依赖，建议优先开展最终可能在防止或扭转土壤中磷固定方面具有实际应用的工作。
