The total phosphorus requirement is relative to the potential of soil phosphorus and nitrogen fertilizer application. 总磷需求量与土壤磷潜力和施用氮肥有关。
A persulphate oxid ation method in acid medium for decomposition and analysis of dissolved total ph osphorus in seawater was proposed. 依此,建立酸性过硫酸盐氧化法分解测定海水中溶解态总磷的方法。