期刊论文

Study on the adsorption and desorption of phosphorus from main tobacco-planting soil in Hunan Province

中文

河南农业大学学报

1000-2340

2021

55

01

115-122

10.16445/j.cnki.1000-2340.20210122.003

湖南中烟工业有限责任公司重点项目（KY2017JD0001）；

本校为第一机构

采用Langmuir等温吸附方程,对湖南主产烟区的8个代表性植烟土壤进行磷的吸附与解吸特性研究。结果表明,8个植烟土壤磷的最大吸附量(Xmax)变化为（657.8±17.82）～（848.9±8.31） mg·kg-1,吸附平衡常数（K）的变化为0.026～0.145,最大缓冲容量（MBC）的变化为（21.5±0.97）～（123.1±18.56）mg·kg-1,易解吸磷（RDP）变化为（0.9±0.81）～（5.7±1.67）mg·kg-1,土壤磷饱和度（DPS）变化为（3.25±0.61）%～（12.81±0.49）%。永定谢家垭（Ⅰ）Xmax,K和MBC值最大,说明该土壤具有最大磷库、最大磷吸附结合能和最强的磷缓冲性能;龙山大安（Ⅱ）土样DPS值最大,土壤对磷的吸附能力较弱,游离态磷...

Langmuir isothermal adsorption equation was used to study the phosphorus adsorption and desorption characteristics of 8 representative tobacco-planting soils in the main tobacco producing area of Hunan Province.The results showed that in 8 tobacco-planting soils the maximum adsorption(X_(max))of phosphorus ranged from(657.8±17.82)to(848.9±8.31)mg·kg~(-1),the adsorption equilibrium constant(K)ranged from 0.026 to 0.145,the maximum buffer capacity(MBC)ranged from(21.5± 0.97)to(123.1±18.56)mg·kg~(-1),and the maximum desorption phosphorus(RDP...