石灰性土壤有效磷测定方法的研究  

THE STUDY OF METHODS FOR DETERMINATION OF EFFECTIVE PHOSPHORUS IN CALCAREOUS SOILS

作　　者：李俊良[1] 韩琅丰[2] 梁素娥[3] 祝丕业 

机构地区：[1]莱阳农学院农学系 [2]北京农业大学 [3]莱阳农学院教务处 [4]莱阳市农技站

出　　处：《莱阳农学院学报》1993年第3期161-165,共5页Journal of Laiyang Agricultural College

摘　　要：比较了几种有效磷测定方法浸出磷的形态及其对植物的有效性,结果表明,不同浓度的NaHCO_3溶液浸出的磷主要是Ca_2-P,与植物的吸磷量相关性高。当有效氮、磷联合浸提测定时,推荐采用0.05mol.L NaHCO_3溶液为浸提剂。The form of phosphorus and their effectiveness to plant soaked out by different methods of defermining effective phosphorus were also comparecl.The phosphorus soaked out by different contents of NaHCO_3 was mainly Ca_2-P. Which had higher correlation with phosphorus absorbed by plant. 0.05mol·L^(-1)NaHCO_3 was recommended when the effective N and P was determined combiningly.

关 键 词：石灰性土壤 有效磷 测定 

分 类 号：S158.3[农业科学—土壤学]