CAJ | 학술논문

采用室内培养和恒温批处理平衡方法，研究了在施加硅酸钙前提下，2 mmol /L 柠檬酸、乙酸和草酸对磷素在棕壤中吸附和解吸的影响，并用 Langmuir 方程进行拟合分析。研究结果表明，Langmuir 方程的拟合效果很好；加硅酸钙和2 mmol /L 草酸处理，以及硅酸钙和2 mmol /L 乙酸处理对磷在棕壤中的吸附量最大，均为526 mg /kg；硅酸钙和2 mmol /L 柠檬酸处理对磷在棕壤中的解吸量及解吸率最大。因此，硅酸钙＋2 mmol /L柠檬酸处理活化棕壤中磷的能力最强。
채용실내배양화항온비처리평형방법，연구료재시가규산개전제하，2 mmol /L 저몽산、을산화초산대린소재종양중흡부화해흡적영향，병용 Langmuir 방정진행의합분석。연구결과표명，Langmuir 방정적의합효과흔호；가규산개화2 mmol /L 초산처리，이급규산개화2 mmol /L 을산처리대린재종양중적흡부량최대，균위526 mg /kg；규산개화2 mmol /L 저몽산처리대린재종양중적해흡량급해흡솔최대。인차，규산개＋2 mmol /L저몽산처리활화종양중린적능력최강。
Laboratory experiments with different kinds of treatments on texted brown soil,namely original soil+ calcium silicate (CaSiO3 ),original soil +2 mmol /L citric acid +CaSiO3 ,original soil +2 mmol /L ace-tic acid +CaSiO3 and original soil +2 mmol /L oxalic acid +CaSiO3 ,were conducted to investigate the char-acteristics of soil phosphorus (P)adsorption and desorption in the presence of organic acid and silicon fertiliz-er by Langmuir equation fittings.The OECD Guideline106 batch equilibrium method was used for adsorption and desorption experiments.Results showed that the brown soil P adsorption fitted Langmuir models better. The soil added calcium silicate and 2 mmol /L acetic and oxalic acids treatments had the maximums adsorbed P,with the maximum adsorption capacities of 526 mg /kg.The soil with calcium silicate and 2 mmol /L citric acid treatment had the greatest desorption rate of P.Therefore,the soil added calcium silicate and 2 mmol /L citric acid treatment had the strongest activation ability and supply capacity of P.