摘要
对福建山地黄壤、红壤、紫色土和赤红壤土壤无机和有机磷的组分进行研究,结果表明:几种土类无机磷组成以闭蓄态磷(O-P)含量最高,其次为磷酸铁盐(Fe-P),再其次为磷酸铝盐(Al-P);几种土类闭蓄态磷(O-P)占全磷比例的大小顺序为赤红壤>红壤>紫色土>黄壤;各土类闭蓄态磷的含量与有机质含量、pH值、阳离子交换量存在负相关。有机磷含量以及占全磷比重的大小顺序为黄壤>紫色土>红壤>赤红壤,由北向南,有机磷占全磷的比重以及绝对量均逐渐降低。随着纬度(北纬)的降低,地带性土类中等活性有机磷比例呈逐步下降趋势,中等稳定和高稳定有机磷呈逐步升高趋势。各类土壤有机磷组分与有效磷相关密切的顺序为:活性有机磷>中等活性有机磷>中等稳定性有机磷>高稳定性有机磷;无机磷各组分与有效磷相关密切的顺序为:O-P>Al-P>Fe-P。
This paper studied the components of inorganic P（Po） and organic P in yellow soil,red soil,purple soil and lateritic red earth in Fujian mountainous region. The results showed that O-P was the primary form of the inorganic phosphorus in the soils, followed by Fe-P and A1-P. The proportion of O-P to total P（TP） was in order lateritic red earth 〉 red soil 〉 purple soil 〉 yellow soil. There were negative correlations between the O-P content and organic matter, pH, CEC. The Po content and the ratio of Po/TP were in order yellow soil 〉 purple soil 〉 red soil 〉 lateritic red earth. From south to north of the region, the proportions of Po/TP and the Po contents decreased gradually. Along the latitude, from high to low, LPo/Po reduced, and the MLPo and HLPo rose gradually. The degree of correlations between fractions of Po and various available P was in order LPo 〉 MLPo 〉 MSPo 〉 HSPo, while the degree of correlations between fractions of organic P and various available P was O-P 〉 A1-P 〉 Fe-P in the soils.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2008年第8期29-36,共8页
Scientia Silvae Sinicae
基金
福建省人才创新基金资助(2001J037)
关键词
福建山地
土类
无机磷
有机磷
组成
Fujian mountainous region
soil great group
inorganic P
organic P
form
