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任何物质的生产都以消耗能源、资源为前提。对化肥生产而言,生产氮肥要消耗较多的能源,但只要太阳存在,能源将用之不尽;海水是巨大的钾资源库,只要海水尤存,钾资源可供人们长期利用;唯有磷矿资源是未来亿年内不可再生,且对生物体是不可替代的资源。自2006年以来,许多国家的专家、学者对磷资源的形势发出了紧急呼吁,尤其对中国磷资源的合理开采、可
Any material production to energy consumption, resources as a prerequisite. For fertilizer production, producing nitrogen fertilizer consumes more energy, but as long as the sun exists, the energy will be inexhaustible. The sea water is a huge potassium resource pool. As long as the sea water exists, the potassium resource can be used for a long time. Only the Phosphorus mineral resources are non-renewable within a billion years and are irreplaceable resources for organisms. Since 2006, experts and scholars from many countries have made an urgent appeal on the situation of phosphorus resources, especially for the rational exploitation of phosphorus resources in China.