1) Phosphorus uptake
磷吸收量
2) Nitrogen and Phosphorus uptake
氮、磷吸收量
3) phosphate adsorption
磷吸附
1.
The effect of several organic acids on phosphate adsorption in brown red soil and its coating with aluminum hydroxides was studied by isothermal equilibrium method.
结果表明:供试1mmol/L、8mmol/L有机酸都使土壤(原状土或包被土)的磷吸附量降低,同一浓度下,其降低顺序是柠檬酸>草酸>酒石酸>苯甲酸≥乙酸;加入柠檬酸、草酸浓度在1~8mmol/L范围内,土壤吸附磷量随有机酸浓度增高而下降,但包被土的下降幅度较小;加入柠檬酸和草酸浓度为1、4mmol/L,磷浓度为80mg/L时,随有机酸溶液pH升高,土壤吸磷量出现“低→高→低”的变化,原土峰值出现在有机酸溶液pH8~9时,铝包被样峰值出现在起始pH4左右;有机酸先于磷加入到土壤时,对土壤吸磷量的影响比两者同时加入的大,反之则影响最小,加有机酸并离心弃去清液再加磷,土壤吸磷量比加有机酸而不离心的高。
4) phosphorus sorption
磷吸附
1.
Study on the phosphorus sorption-desorption characteristics of red soils and its environmental impact;
红壤磷吸附解吸特性及环境效应研究
5) phosphorus adsorption
磷吸附
1.
Characteristics of phosphorus adsorption in urban landscape water by three types of fly ash were studied.
研究了三种常见的中、低钙粉煤灰的磷吸附特性。
2.
Phosphorus adsorption data of rhizosphere and non-rhizospher.
对滨海脱盐土壤上11年生1-69杨根际、非根际土壤磷吸附特性进行了研究。
6) P adsorption
磷吸附
1.
Liquid flow method was used to investigate the kinetic characteristics of P adsorption in purple paddy organo mineral complex for the first time.
结果表明,在反应的2h内,灰棕紫泥低肥力水稻土和红紫泥低肥力水稻土的有机无机复合体磷吸附过程以复一级反应为特征。
2.
The continuous shaking trials were conducted to preliminarily study the effect of the different water-dissolved organic polymeric compounds-polyvinylalcohol (PVA), polyacrylamide (PAM) and polyethyleneglycol (PEG), on the kinetics of P adsorption in red soils.
结果表明:在聚乙烯醇、聚丙烯酰胺和聚乙二醇作用下土壤磷吸附动力学以幂函数方程为最优方程,且方程参数与单施磷酸二氢钙的处理方程参数有显著差异性。
3.
The changes of total reducing substances (TRS), oxalate extractable Fe (Fe o), dithionite citrate bicarbonate extractable Fe (Fe DCB ) and phosphorus adsorption (P adsorption) in oxic and anoxic layers of two paddy soils during 6 week flooding were examined under laboratory conditions.
在实验室条件下对两种水稻土在为期 6周的淹水过程中 ,其氧化层和还原层土壤中还原物质总量 (TRS)、草酸盐可提取铁 (Feo)、连二亚硫酸钠 -柠檬酸 -碳酸氢钠可提取铁 (Fe DCB)和磷吸附的变化进行了研究 。
参考词条
补充资料:肾小管葡萄糖最大重吸收量试验
肾小管葡萄糖最大重吸收量试验
一种测定肾小管重吸收功能的试验。利用单位时间内肾小球滤出的葡萄糖量减去单位时间尿中出现的葡萄糖量,可计算出TMG值。测定方法:晨7时30分首次静脉注射40%葡萄糖溶液150ml,以后用30%葡萄糖溶液每分钟10ml速度维持输液。其他操作同*菊糖清除率,同时测定菊糖清除率以求出肾小球滤过率,然后按下式计算TMG值。TMG=PG×Cin-UG×V,式中PG为血浆葡萄糖浓度,Cin为菊糖清除率,UG为尿中葡萄糖浓度,V为每分钟尿量。正常人TMG平均值为340± 18.2mg/min/1.73m2。男性为300~450mg/min/1.73m2,女性约250~350mg/min/1.73m2。TMG的高低可反映有效肾单位的数量和功能,是测定近曲肾小管重吸收功能的指标之一。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。