张淼,盛明雅,张丽楠,李莉,张亚静.基于电极阵列的土壤速效养分快速检测系统[J].农业机械学报,2012,43(Z1):277-282.
Zhang Miao,Sheng Mingya,Zhang Linan,Li Li,Zhang Yajing.Development of Soil Available Macronutrients Detection System Based on Ion-selective Electrodes Array[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(Z1):277-282.
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基于电极阵列的土壤速效养分快速检测系统   [下载全文]
Development of Soil Available Macronutrients Detection System Based on Ion-selective Electrodes Array   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2012.S0.057
中文关键词:  土壤  速效养分检测  离子选择电极阵列  测土配方施肥
基金项目:国家自然科学基金资助项目(61134001);高等学校博士学科点专项科研基金资助项目(20110008120023)
作者单位
张淼 中国农业大学 
盛明雅 中国农业大学 
张丽楠 中国农业大学 
李莉 中国农业大学 
张亚静 中国农业机械化科学研究院 
中文摘要:从降低检测成本和提高时效性出发,设计了基于电极阵列的土壤速效养分快速检测系统,系统主要包括电极阵列、单片机和信号调理等模块,其中电极阵列为传感单元,主要由pH电极、硝酸根电极、钾离子电极、磷酸盐电极和参比电极组成。性能测定结果表明,系统输入阻抗达到1012Ω数量级,输入电流小于1pA,响应电位测量范围为-2000~2000mV,可与主流离子选择电极实现较好匹配。自主研发的基于电极阵列的土壤速效养分快速检测系统可基本满足土壤对pH值、硝态氮和速效钾的速测要求。
Zhang Miao  Sheng Mingya  Zhang Linan  Li Li  Zhang Yajing
China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University;Chinese Academy of Agricultural Mechanization Sciences
Key Words:Soil  Available macronutrient detection  Ion-selective electrode array  Site-specific fertilization
Abstract:In order to decrease the cost and improve the testing efficiency, a four channel detection system for soil macronutrients rapid determination was developed and evaluated. The system was mainly composed of an ion selective electrodes (ISEs) array, a laptop computer, a microchip and the signal conditioning circuit. As a sensing unit, the ISEs array was integrated with a pH electrode, a nitrate ISE, potassium ISE and a phosphate ISE. According to the testing results, the input impedance of each channel was around 1012Ω, and the input current was about 1pA. The detection range was between -2000~2000mV,which indicated the good compatibility with the majority of ion-selective electrodes. According to the validation results, the testing accuracy and detection range of soil pH value, nitrate-nitrogen and potassium could meet the needs of site-specific fertilization.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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