Soil phosphorus sorption properties in different fertilization systems

Plant, Soil and Environment

Ewa Szara¹ 

关键词: macronutrient;    Secale cereale L.;    vertical variability of phosphorus;    static experiment;    soil-phosphorus;   

DOI  :  10.17221/696/2018-PSE

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

The study aimed at the evaluation of the accumulation and vertical distribution of different forms of phosphorus (P) in reference to phosphorus sorption properties subject to mineral (NPK), mineral-organic (NPK + M), and organic (M) fertilisation. It was carried out in a long-term experimental field in Skierniewice (Central Poland) conducted since 1923 under rye monoculture. Total P content in the M and NPK soil profile was similar and lower than in the NPK + M soil. The content of organic P in A _p and E _et horizons of both manured soils was similar and higher than in the NPK soil. The Langmuir P sorption maximum (S _max ) in the studied soils ranged from 39.7 to 90 mg P/kg, while the Freundlich P sorption coefficient a _F ranged from 6.9 to 41.9 mg P/kg. Higher variability of parameters related to the binding energy from the Lanqmuir ( k ) and Freundlich ( a _F ) equations was determined between soil horizons than between the fertilisation systems. Nonetheless, in M and NPK + M soils, sorption parameters a _F and S _max and binding energy ( k , b _F ) were considerably lower than in the NPK soil. The content of water extracted P in manured soils was higher than in the NPK soil.

【 授权许可】

CC BY