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| 1 | Quantitative Effect of Soil Texture Composition on Retardation Factor of K^+ Transport显示文摘With six packed columns composed of < 1 μm and 5 μm~0.25 mm fractions from an Eum-Orthic An- throsol (Columns 1~6) and one column of the Eum-Orthic Anthrosol (Column 7), K~(+) transport experiments under the condition of saturated steady water flow were conducted to qualify the effects of soil texture com- position on the retardation factor (R) of K~(+) transport. The results showed that the retardation factor of K~ (+) transport in the tested soil columns greatly increased with increasing clay contents. In an attempt to use pedo-transfer function (PTF) approach in the solute transport study, a preliminary PTF was established through the six packed columns (Columns 1~6) with soil basic data including soil bulk density, volumet- ric water content and clay content to predict the retardation factor, and proved valid by the satisfactory prediction of R in Column 7. | WANGYU ZHANGYIPING | 2001 | Pedosphere2001，11，4： | 15 |
| 2 | Similarities and Differences Between Freundlich Kinetic Equation and Two-Constant Equation显示文摘NTRODUCTIONThetwo-constalltequationhasbeenincommonuseinthestudyonsoilchemicalkinetics(JiangandZhang,1993;Sparks,1986);itsuse,however,islimitedtosomeextendbecauseitsphysicalmeaninghasnotyetbeenclear(JiangandZhang,1993).Thoughtheneundlichisothermaladso... | ZHANGZENGQIANG ZHANGYIPING | 1999 | Pedosphere1999，9，3： | 3 |
| 3 | Calculation of Thermodynamic Parameters for Freundlichand Temkin Isotherm Models显示文摘Derivation of the Freundlich and Temkin isotherm models from the kinetic adsorption/desorpt ion equations was carried out to calculate their thermodynamic equilibrium constants. The calculation formulae ofthree thermodynamic parameters, the standard molar Gibbs free energy change, the standard molar enthalpy change and the standard molar entropy change, of isothermal adsorption processes for Freundlich andTemkin isotherm models were deduced according to the relationship between the thermodynamic equilibriumconstats and the temperature. | ZHANGZENGQIANG ZHANGYIPING 等 | 1999 | Pedosphere1999，9，4： | 2 |
| 4 | Mechanisms for the Movement of Fe,Mn,Cu and Zn to Plant Roots in Loessal Soil and Lou Soil显示文摘The pot experiments were conducted in the artificial climate laboratories to determine the relative importance of mass flow and diffusion in supplying ,Fe,Mn,Cu,and Zn to wheat,soybean and maize plants growing in loessal soil and lou soil.It was found that the calculated relative contribution of mass flow of iron,manganese,copper and zinc to plant uptake varied from 5% to more than 100%,depending on the crop species and soil types as well as plant growth stage,soil moisture,atmosphere humidity,etc.The results also showed that the major transportation mechanisms of these micronutrients in soil-root system varied with the crop and its growth,climate and soil,singnificantly,In general,mass flow was more important for Cu and Zn and diffusion was more significant for Fe and Mn at the seedling stage. | XUMINGGANG ZHANGYIPING 等 | 1996 | Pedosphere1996，6，3： | 2 |
| 5 | The characteristics of infrared spectrum of 6 typical zonal soils in China[J]显示文摘 | WANGYu(王玉) ZHANGYiping(张一平) CHENSigen(陈思根) | 2003 | 西北农林科技大学学报自然科学版2003，，2： | 1 |
| 6 | Studyonthecharacteristicsoflightfiltratedbydifferentagriculturalplasticfilms[J]显示文摘 | TANGXuanzhi(唐玄之) LINGLijuan(凌丽娟) ZHANGYiping(张义平) | 1987 | 南京农业大学学报1987，，4： | 1 |
| 7 | Column Holdup Formula of Soil Solute Transport显示文摘The shortcomings of the present two formulae for describing column holdup are analyzed and deductions are made to find a new formula. The column holdup, Hw, described by the new formula is dimensional, and related to soil solute transport kinesis and column physical properties. Compared with the other two column holdups, Hw is feasible to describe dimensional column holdup during solute transport process. The relationships between Hw and retardation factor, R, in different solute transport boundary conditions are established. | WANGYU ZHANGYIPING | 2000 | Pedosphere2000，10，1： | 0 |
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