Estimation of Turnover and Equilibrium of Soil Organic Matter Using a Mathematical Approach

WU Chun-Yan; CHEN Yi; WANG Jia-Yu; WANG Sheng-Jia

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Estimation of Turnover and Equilibrium of Soil Organic Matter Using a Mathematical Approach

机译：用数学方法估算土壤有机质的周转和平衡

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The methods based on N uptake of aerial-plants, soil organic matter (SOM) dynamics, Jenny's equation, and actual measurement of long-term field experiments in Jiaxing, Quzhou, Huangyan and Hangzhou of Zhejiang Province, China were used to determine the organic mineralization rate being helpful in estimating the organic requirement for SOM equilibrium.The results showed that the estimated mineralization ratios of SOM for Jiaxing and Quzhou were, respectively, 0.0404 and 0.0508 based on N uptake of aerial-plants in non-fertilized plots; 0.0405 and 0.012 using SOM dynamics in non-fertilized plots; and 0.0413 and 0.0513 using the actual investigated data and Jenny's equation. With Jenny's equation, soil organic C balance in manure + N-P-K plots was estimated at nearly 28.8 g kg-1 for Jiaxing and 32.4 g kg-1 for Quzhou with predicted SOM linearly related to the actual investigated values (r2 = 0.9640 for Jiaxing and 0.8541 for Quzhou). To maintain the SOM balance in the non-fertilized plots the recommended rate of organic materials was 3 000-6 600 kg ha-1,and the relevant rates of farm yard manure (FYM) in the manure and N-P-K plots were estimated at 3 375 (dry) and17670 kg ha-1 (wet) for Jiaxing, 1845 (dry) and 6090 kg ha-1 (wet) for Quzhou.

机译：利用基于植物吸收氮，土壤有机质动力学，詹妮方程和浙江嘉兴，Qu州，黄岩和杭州的长期野外实验的实际测量的方法来确定有机物。结果表明，基于非施肥地块种植植物对土壤的氮素吸收量，嘉兴和Qu州的土壤有机质矿化比分别为0.0404和0.0508。在非受精地块中使用SOM动力学得到0.0405和0.012;使用实际研究的数据和詹妮方程得出0.0413和0.0513。利用詹妮方程，估计粪肥+氮磷钾肥地的有机碳平衡在嘉兴约为28.8 g kg-1，for州约为32.4 g kg-1，其预测SOM与实际调查值线性相关（嘉兴r2 = 0.9640，0.8541 （Qu州）。为了在非施肥地块中保持SOM平衡，推荐的有机材料比率为3 000-6 600 kg ha-1，估计粪便和NPK地块的相关农田粪肥（FYM）比率为3 375嘉兴，干重分别为（干）和17670千克ha-1（湿），Qu州为1845（干）和6090千克ha-1（湿）。

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来源
《土壤圈（英文版）》 |2006年第5期|634-645|共12页
作者
WU Chun-Yan; CHEN Yi; WANG Jia-Yu; WANG Sheng-Jia;
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作者单位

Institute of Environmental Resources & Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021(China);

Institute of Environmental Resources & Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021(China);

Institute of Environmental Resources & Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021(China);

Institute of Environmental Resources & Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021(China);

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
equilibrium; mathematic modeling; rice fields; soil organic matter (SOM); turnover;

机译：平衡;数学模型;水稻田;土壤有机质（SOM）;周转率;

Estimation of Turnover and Equilibrium of Soil Organic Matter Using a Mathematical Approach

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