欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
从基本理论出发，计算了一种新型探针式四电极外部电势的理论分布，通过对敏感场分析得出了该四电极的敏感响应范围为径向直径约1．5倍电流电极间距的椭球体。通过研究士壤表观电导率（ECa）、土壤盐分（EC1：5）和土壤质量含水率（θ）之间的关系，利用非线性回归的方法获得了精度较高的ECa-EC1：5校正模型，为土壤盐渍化调查和监测提供了便捷有效且费用低廉的方法。
英文摘要：
The mathematical model for a ring-shape four-electrode probe was established and the sensitivity distributions of the electrical potential and the current density in radial and axial directions were calculated by using numerical method under the additional assumptions that the sensor was surrounded with a homogenous medium. By studying the sensitivity field, the measuring range of this sensor was estimated to be an ellipsoids whose radial diameter was about 1.5 times of the spacing between the two current electrodes. Moreover, for the purpose of measuring soil salinity, we studied the relationship between soil apparent conductivity ECa, soil water content θ and soil salinity EC1：5 and fitted an accurate empirical model for converting the ECa detected by the probe to customary EC1：5. This four-electrode probe would provide a simple, quick and inexpensive method to measure and survey soil salinity.
同期刊论文项目
同项目期刊论文
Spatio-Temporal Changes of Soil Salinity in Arid Areas of South Xinjiang Using Electromagnetic Induc
MULTIVARIATE SIMULATION AND ASSESSMENT OF THREE DIMENSIONAL SPATIAL PATTERNS OF COASTAL SOIL SALINIT
Determining minimum data set for soil quality assessment of typical salt-affected farmland in the co
Effects of Irrigation Water Quality and Drip Tape Arrangement on Soil Salinity, Soil Moisture Distri
Determining soil salinity and plant biomass response for a farmed coastal cropland using the electro
Determination of site-specific management zones using soil physico-chemical properties and crop yiel
Distribution and dynamics of soil water and salt under different drip irrigation regimes in northwes
Short-term effect of cultivation and crop rotation systems on soil quality indicators in a coastal n
Studies on soil water and salt balances and scenarios simulation using SaltMod in a coastal reclaime
The Effects of Farmyard Manure and Mulch on Soil Physical Properties in a Reclaimed Coastal Tidal Fl
Impact of irrigation volume and water salinity on winter wheat productivity and soil salinity distri
期刊信息
位置：