摘要
施硅可以促进园艺作物生长,提高抗逆性和改善果实品质,但关于温室土壤硅素肥力状况及其评价的研究鲜有报道。采用等温吸附试验与盆栽试验相结合的方法,研究温室土壤硅素的吸附特征及其用于评价土壤供硅能力的适宜性。结果表明:直线型方程y=bx-a能很好地描述土壤硅素的吸附特征,方程参数a、b受土壤pH值和有机质的显著影响,分别与土壤pH值、有机质含量呈显著的直线和二次函数相关关系;且参数a还与植株干物重、含硅量间分别呈显著的对数和幂函数正相关关系。等温吸附曲线方程可用于评价温室土壤的供硅能力,方程参数a值可以作为表征土壤硅素供应能力的特征参数。
Silicon fertilizer could promote the growth of horticultural crop.The quality of fruits and resistance of plant could be enhanced,but there are few literatures to study silicon fertility of greenhouse soils and its evaluation methods.Silicon adsorption characteristics and the assessment of silicon supplying capability in greenhouse soils were studied with isothermal adsorption experiment,pot experiment and chemical analysis method.Results showed that the linear equation（y=bx-a）,was found to be more suitable to describing silicon adsorption characteristics of greenhouse soils.There were significant positive linear correlations and quadratic function correlations between two parameters（a and b）and soil pH,organic matter of soil respectively.There were significant logarithm correlation between parameter a and dry weight of plant,and positive power function correlation between parameter a and silicon concentration of plant.So isothermal adsorption equation could be used to evaluate silicon supplying capability in greenhouse soil,and parameter a could be the characteristic parameter.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2010年第5期540-544,共5页
Journal of Shenyang Agricultural University
基金
国家自然科学基金项目(40971175)
辽宁省自然科学基金项目(20040532)
关键词
硅
温室土壤
等温吸附
评价
silicon
greenhouse soil
isotherm adsorption
evaluation methods
