摘要
通过对玄武岩、花岗岩、砂岩、浅海沉积物等几种母质发育而成的砖红壤中的有机磷、有效磷、无机磷以及无机磷中的铁磷、铝磷、钙磷和闭蓄态磷进行研究，结果表明：不同母质发育的砖红壤，其磷的差异很大，无机械总量以玄武岩发育的砖红壤最高，其次为浅海沉积物，砂岩最低。在无机磷各组分中，又以闭蓄态磷含量最高（４７．７９％～９３．８０％），其次为铁磷（２．５２％～４６．９３％），最低为铝磷（０．６２％～３．５２％）．闭蓄态磷主要存在于土壤的粘粒和细粉粒中，与旱地相比，水田中铁磷所占的比例较高，闭蓄态磷的比例较低。
In this paper,the organic phosphorus, available phosphorus, and inorganic phosphorus in lat-erites(derived from the different parent materials, such as basalt, granite, sand stone, and sea-de- posit) and the Fe-P,O-P,Al-P,Ca-P in inorganic phosphorus were studied. The results showed that: The phosphorus content in laterites derived from different parent materials was different. Among the component contents, the total volume of inorganic phosphorus in laterite from basalt was the highest, andthat in laterite from sea-deposit second , and that in laterite from sand-stone lowest. Furthermore, Among every component of inorganic phosphorus, the content of O-P was the highest, and that of Fe- P second, and that of Al-P lowest. In addition , The O-P mainly existed in clay and silt. When the paddy soil was compared with the upland soils has the higher Fe-P ratio and the lower O -P ratio.
出处
《海南大学学报（自然科学版）》
CAS
1998年第2期133-136,共4页
Natural Science Journal of Hainan University
关键词
母质
砖红壤
磷
土壤类型
红壤
Different parent materials
laterites
the components of phosphorus
