石灰性土壤中磷形态的研究  

THE STUDY OF FORM OF PHOSPHORUS IN CALCAREOUS SOILS

作　　者：韩琅丰[1] 李俊良[2] 梁素娥[3] 

机构地区：[1]北京农业大学 [2]莱阳农学院农学系 [3]莱阳农学院教务处

出　　处：《莱阳农学院学报》1993年第2期79-82,共4页Journal of Laiyang Agricultural College

摘　　要：用新的土壤无机磷分级方法对20个石灰性土壤中磷的存在形态进行分级测定,并以“连续矿化——栽培微钵试验”植物吸磷量为参比项进行相关研究。结果表明。Ca_2-P是植物最有效的直接磷源。Al-P以及Ca_8-P和Fe-P与Ca_2-P有极高的相关性,直接影响Ca_2-P含量,也是植物的有效磷源。New grade method of soil inorgnic phosphorus was used in determining the existing form of phosphorus in 20 calcareous soils.The amount of phosphorus absorbed by plant in 'continuous minerlization-cultivate microhowl experiment'was also studied, which was used as reference to the former,The results indicated that Ca_2-P was the most effective direct phosphorus source of plant. A higher correlation existed between the Al-P、 Ca_8-P、Fe-P and Ca_2-P. Al-P、Ca_8-P and Fe-P were sources of effective phosphorus and effected the conteut of Ca_2-P.

关 键 词：石灰性土壤 磷 

分 类 号：S155.31[农业科学—土壤学]