论文部分内容阅读
选取低浓度系列平衡液进行等温吸附试验,研究了不同pH水稻土对硅的吸附等温曲线方程参数与土壤理化性质之间的关系。结果表明:土壤吸附硅的缓冲容量(PBCSi)与土壤粘粒含量呈线性正相关关系(r=0.7745**,n=12),与土壤pH呈对数正相关关系(r=0.8660**,n=12);土壤吸附硅的零位浓度(ZACSi)与土壤游离氧化铁含量呈对数正相关关系(r=0.5801*,n=12),与土壤pH呈指数负相关关系(r=0.8661**,n=12);评价土壤供硅能力指标的参数与土壤氧化铁活化度呈指数负相关关系(r=0.6026*,n=12),与氧化铁晶胶比呈幂函数正相关关系(r=0.5950*,n=12)。
The isobaric adsorption experiments were carried out to study the relationship between the adsorption isotherm equation and the physico-chemical properties of silicon in different pH paddy soils. The results showed that there was a linear positive correlation between soil buffering capacity (PBCSi) and soil clay content (r = 0.7745 **, n = 12) and a positive logarithmic correlation with soil pH (r = 0.8660 **, (r = 0.5801 *, n = 12). There was an exponential negative correlation between ZACSi and soil pH (r = 0.8661 **, n = 12). There was an exponential negative correlation between soil silicon availability and soil iron availability (r = 0.6026 *, n = 12) (r = 0.5950 *, n = 12).