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有机酸影响矿物钾释放的室内试验与数学模拟
引用本文:崔建宇,任理,王敬国,张福锁.有机酸影响矿物钾释放的室内试验与数学模拟[J].土壤学报,2002,39(3):341-350.
作者姓名:崔建宇  任理  王敬国  张福锁
作者单位:中国农业大学资源与环境学院,北京,100094
基金项目:国家重点基础研究发展规划项目 (G1 9990 1 1 70 7),国家自然科学基金资助项目 ( 395 70 4 1 8)
摘    要:在生物试验的基础上 ,利用连续流动法 ,模拟植物根系分泌有机酸的种类和数量 ,研究了不同有机酸对矿物钾释放的影响。结果表明 ,有机酸能够明显地促进矿物中钾的释放 ,浓度越高 ,释钾作用越明显 ;此外 ,其释钾能力还与有机酸的种类、矿物类型密切相关。对试验结果进行了随机数学模拟 ,表明所采用的传递函数模型能够较好地仿真矿物钾的释放过程。

关 键 词:有机酸  矿物钾  钾释放  传递函数模型  随机模拟
收稿时间:2000/8/18 0:00:00
修稿时间:2000年8月18日

EFFECT OF ORGANIC ACIDS ON MOBILIZATION OF K FROM K-BEARING MINERALS AND STOCHASTIC SIMULATION OF DYNAMIC K RELEASE
Cui Jian-yu,Ren Li,Wang jing-guo and Zhang Fu-suo.EFFECT OF ORGANIC ACIDS ON MOBILIZATION OF K FROM K-BEARING MINERALS AND STOCHASTIC SIMULATION OF DYNAMIC K RELEASE[J].Acta Pedologica Sinica,2002,39(3):341-350.
Authors:Cui Jian-yu  Ren Li  Wang jing-guo and Zhang Fu-suo
Institution:College of Agricultural Resource and Environmental Science, China Agricultural University, Beijing 100094;College of Agricultural Resource and Environmental Science, China Agricultural University, Beijing 100094;College of Agricultural Resource and Environmental Science, China Agricultural University, Beijing 100094;College of Agricultural Resource and Environmental Science, China Agricultural University, Beijing 100094
Abstract:Based on the culture experiments,the mechanism of K mobilization from minerals has been studied with flow extraction technique by simulating the types and the concentrations of organic acids that plant roots excretes under P deficiency The results showed that organic acids significantly stimulated K release from minerals,and the release of K increased with the concentration of organic acids Moreover,the mobilizing ability was closely correlated to the type of the organic acids and minerals The release of K from feldspar and muscovite was simulated by a transfer function model The simulated data was correlated with the measured data It indicated that the transfer function model is useful in studying mobilization of structural K in K bearing minerals
Keywords:Organic acids  Structural K  K released  Transfer function model  Stochastic simulation
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