作物磷素养分的动态模拟

生态学杂志 ›› 2005, Vol. ›› Issue (3): 335-338.

作物磷素养分的动态模拟

庄恒扬^1,2, 曹卫星¹, 刘传松¹

1. 南京农业大学农业部作物生长调控重点开放实验室, 南京, 210095;
2. 扬州大学农学院农学系, 扬州, 225009

收稿日期:2003-08-26 修回日期:2003-11-03 出版日期:2005-03-10
通讯作者: 庄恒扬,男,1957年生,博士,教授.主要从事农业生态与耕作制度研究,发表论文30余篇.
基金资助:
国家“863”计划项目(2001AA115420、2001AA245041);国家自然科学基金重点资助项目(30030090)

Dynamic simulation of phosphorus nutrient in crop-soil system

ZHUANG Hengyang^1,2, CAO Weixing¹, LIU Chuansong ¹

1. Key Laboratory of Crop Growth Regulation, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China;
2. College of Agriculture, Yangzhou University, Yangzhou 225009, China

Received:2003-08-26 Revised:2003-11-03 Online:2005-03-10

摘要/Abstract

摘要： 基于养分平衡原理,分别建立了土壤有机磷与有机肥分解磷的释放、土壤有效磷吸附的动态模型,用Langmuir方程描述土壤吸附磷量与土壤溶液磷浓度的关系,建立了植株临界磷浓度与生理发育时间的关系模型,以及基于生长潜在需要和土壤水溶性磷浓度限制的作物磷素吸收动态模型.检验结果表明,模型对小麦植株含磷率的动态变化有较好的预测效果.

关键词: CO₂浓度, 长白山, 阔叶红松林, CO₂交换

Abstract: The dynamic simulation models of phosphorus nutrient in crop-soil system were developed in this paper.In the models of phosphorus dynamics,maximum phosphorus absorption capacities were estimated with the concentrations of metal oxides in acid soils and with the clay percentages in other types of soils.The relationship between total available phosphorus and the equilibrium solution phosphorus concentrations in soil was described with the Langmuir function.The functional relations of above-ground critical phosphorus concentrations to PDT were established.The models were tested by phosphorus concentrations in wheat plants,indicating satisfactory agreements to the experimental data.

Key words: CO₂ concentration, Changbai Mountains, Broad-leaved Korean pine forest, CO₂ exchange

中图分类号:

S126

庄恒扬, 曹卫星, 刘传松. 作物磷素养分的动态模拟[J]. 生态学杂志, 2005, (3): 335-338.

ZHUANG Hengyang, CAO Weixing, LIU Chuansong . Dynamic simulation of phosphorus nutrient in crop-soil system[J]. cje, 2005, (3): 335-338.

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