结构变化和生物量生产与分配过程下苜蓿生长模拟研究

doi:10.11733/j.issn.1007-0435.2013.02.011

›› 2013, Vol. 21 ›› Issue (2): 280-287.DOI: 10.11733/j.issn.1007-0435.2013.02.011

结构变化和生物量生产与分配过程下苜蓿生长模拟研究

张吴平¹, 刘建宁², 王若梦³, 高艳丽³, 岳文斌³, 董宽虎³

1. 山西农业大学资源与环境学院, 山西太谷 030801;
2. 山西农业科学研究院畜牧研究所, 山西太原 030032;
3. 山西农业大学动物科技学院, 山西太谷 030801

收稿日期:2012-09-24 修回日期:2012-11-12 出版日期:2013-04-15 发布日期:2013-04-23
通讯作者: 董宽虎,dongkuanhu@126.com
作者简介:张吴平(1973-),男,山西长治人,副教授,博士,研究方向为植物/土壤系统模拟研究和数字农业,E-mail:zwping@126.com
基金资助:
山西省自然基金(2008021043);山西省科技攻关项目(20120311009-1);"十一五"国家科技支撑计划课题(2008BAD95B04)(2007BAD56B02)资助

Functional-Structural Model of Alfalfa Based on Dynamical Structure, Biomass Production and Allocation

ZHANG Wu-ping¹, LIU Jian-ning², WANG Ruo-meng³, GAO Yan-li³, YUE Wen-bin³, DONG Kuan-hu³

1. College of Resources and Environment, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
2. Institute of Animal Husbandry, Shanxi Academy of Agricultural Science, Taiyuan, Shanxi Province 030032, China;
3. College of Animal Science and Technology, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China

Received:2012-09-24 Revised:2012-11-12 Online:2013-04-15 Published:2013-04-23

摘要/Abstract

摘要： 为真实反映苜蓿的结构和生长过程,经2年土柱栽培试验,对阿尔冈金紫花苜蓿(Medicago sativa 'Algonquin')的结构和生物量进行动态测定,划分了苜蓿的生长单元。在生长单元上模拟苜蓿的结构变化与不同阶段的生物量生产过程。以生长单元归一化的扩展速率与相应的库强乘积大小作为权重,竞争获取可用的生物量,实现生物量的分配。采用异速生长关系实现苜蓿的几何形态与生物量的动态关联,从而建立苜蓿的功能-结构模型。最后利用第1年的土柱栽培试验获取模型参数,模拟了第2年土柱栽培试验苜蓿同类器官累积生物量的动态变化过程,并对苜蓿生长过程进行可视化仿真。结果表明:不同指标的测定值与模拟值的均方根差值在5.79～123.28 g之间变化,相对误差值在0.02～0.67之间变化,模拟值与实测值间有较好的吻合性。所建立的功能-结构模型能够定量化预测苜蓿结构变化与生物量生产及分配的动态反馈过程,从植物生长的机理层次实现苜蓿生长过程的动态模拟。

关键词: 苜蓿, 库强, 异速生长关系, 生物量分配, 功能-结构模型

Abstract: The functional-structural model of alfalfa was developed based on structure change, biomass production and allocation. The geometrical structures and biomass of each alfalfa organ were measured by two-year field soil culture column experiments. The basic growth unit was determined according to the external morphology of alfalfa. The structures formed by different rank branches were simulated using the structural time scale expressed by thermal time. Based on the spatial morphological structures, the available biomass was calculated by the photosynthetic module which was the function of area of leaves, stems and the average photosynthetic rate each day. The processes of biomass partitioning and accumulation in each organ were completed by the magnitude of sink. Finally, the model parameters were obtained by first-year soil culture column experiments. Results showed that the simulated values agreed with the measured values. The values of RMSE ranged from 5.79 g to 123.28 g, and the values of RE from 0.02 to 0.67 between simulated and measured biomass for different indexes. The model output reflecst the change tendency and growth processes for an alfalfa individual. This suggested that the functional-structural alfalfa model was able to quantitatively predict the feedback process among the structure change, biomass production and partitioning from the mechanism point of development and growth of plant.

Key words: Alfalfa, Sink, Allometrical relationships, Biomass allocation, Functional-structural plant model

中图分类号:

S-03
S541.9

张吴平, 刘建宁, 王若梦, 高艳丽, 岳文斌, 董宽虎. 结构变化和生物量生产与分配过程下苜蓿生长模拟研究[J]. , 2013, 21(2): 280-287.

ZHANG Wu-ping, LIU Jian-ning, WANG Ruo-meng, GAO Yan-li, YUE Wen-bin, DONG Kuan-hu. Functional-Structural Model of Alfalfa Based on Dynamical Structure, Biomass Production and Allocation[J]. , 2013, 21(2): 280-287.

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结构变化和生物量生产与分配过程下苜蓿生长模拟研究

Functional-Structural Model of Alfalfa Based on Dynamical Structure, Biomass Production and Allocation

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