黑龙港北部潮土无机磷组成转化及供磷特性研究  

Composing, transforming and supplying characters of inorganic phosphorus in north Heilonggang's alluvial soil

作　　者：张晓红[1] 霍习良[1] 许皞[1] 路鹏[1] 王贺利[1] 

机构地区：[1]河北农业大学资源与环境学院,河北保定071001

出　　处：《河北农业大学学报》2002年第z1期71-73,共3页Journal of Hebei Agricultural University

基　　金：河北省科委"九五"科技攻关项目 (962 2 0 913D)

摘　　要：通过盆栽培养试验研究了冲积平原区潮土经多年耗竭后土壤无机磷形态转化特点及供磷特性。结果表明 ,该土壤无机磷形态组成以Ca -P为主 ,占无机磷总量的 80 %以上 ,O -P占无机磷总量 11.6% ,Fe -P和Al-P较少 ,均不到无机磷总量的 5 %。在培养过程中 ,CK和NK处理的Ca8-P、Al-P、Fe-P和O -P表现得十分活跃 ,随培养时间的延长均呈逐渐上升趋势 ,Ca2 -P和Ca1 0 -P相对来说比较稳定 ,变化不大。NPK处理中各形态无机磷的变化都是增加的趋势 ,其中增幅最大的是Ca2 -P ,为3 0 0 %。该土壤的Fe -P、Al-P对小麦的贡献率都很大 ,二者之和几乎与Ca -P相平 ;Ca-P中Ca2 -P和Ca8-P在不同施肥管理中表现的贡献差异很大 ,Ca1 0Resulting from the pot and cultivation trials, Ca-P is the main component of inorganic phosphorus in Heilonggang's Alluvial Soil with a percentage of 80% The percent of O-P is 11.6%; Fe-P and Al-P are both no more than 5%. During the cultivation, Ca 8-P, Al-P, Fe-P and O-P were very active in CK and NK treatments, increasing as time passed, while Ca 2-P and Ca 10 -P were more steady and changed little. In NPK treatment, every form of inorganic phosphorus increased, and the biggest increase is of Ca 2-P as 300%. Both contributions of Fe-p and Al-P in this soil were very considerable, when convened, it was almost even to the Ca-P's. The contribution difference between Ca 2-P and Ca 8-P was great in different treatments, and the Ca 10 -P contributed in reverse.

关 键 词：潮土 无机磷形态 供磷特性 

分 类 号：S153.6[农业科学—土壤学]