生态平衡施肥模型与目标产量施肥模型比较研究

对目标产量施肥模型特点、弊端和预测施肥量精度等进行了综合研究,并与生态平衡施肥模型进行了比较。结果表明：尽管目标产量施肥模型构建合理,参数获得容易,但参数多,参数易变,参数准确测定困难,参数间存在相互影响关系,模型中没有考虑土壤有效养分平衡或变化,因此,它难以作为精确施肥模型使用;与其相比,生态平衡施肥模型将施肥系统中诸多变量统一在质量守恒定律之下,具有测土施肥模型和肥料效应函数模型的双重功能,参数变异小,参数易于获得和预测施肥量准确等诸多优点。...

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Published in农业资源与环境学报 Vol. 31; no. 6; pp. 495 - 499
Main Author 黄治平 米长虹 侯彦林 刘书田 郑宏艳 王农 蔡彦明 王铄今 侯显达
Format Journal Article
LanguageChinese
Published 农业农村部环境保护科研监测所 25.12.2014
中国农业生态环境保护协会
Subjects
特征参数
生态平衡施肥模型
目标产量施肥模型
特征参数
目标产量施肥模型
生态平衡施肥模型
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ISSN2095-6819
2095-6819

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Summary:对目标产量施肥模型特点、弊端和预测施肥量精度等进行了综合研究,并与生态平衡施肥模型进行了比较。结果表明：尽管目标产量施肥模型构建合理,参数获得容易,但参数多,参数易变,参数准确测定困难,参数间存在相互影响关系,模型中没有考虑土壤有效养分平衡或变化,因此,它难以作为精确施肥模型使用;与其相比,生态平衡施肥模型将施肥系统中诸多变量统一在质量守恒定律之下,具有测土施肥模型和肥料效应函数模型的双重功能,参数变异小,参数易于获得和预测施肥量准确等诸多优点。
Bibliography:12-1437/S
ecological balanced fertilization model;target yield method;diagnostic parameters
This paper discussed the characteristics, shortcoming and estimated dosage precision of target yield method（TYM）, and compared with those of the ecological balanced fertilization model（EBFM）. The results showed that the structure of TYM was reasonable and parameters were easy gotten. However, the fatal disadvantages of TYM were variable multi-parameters system with accurate parameters hardly be gotten, interactions among parameters, and less consideration of exchange item of soil available nutrient. Therefore, it was hard for TYM to be widely applied as an accurate fertilization model. In comparison with TYM, EBFM was an universal, quantitative and mechanism model, which was established based on the mass conversation law and the relationships of available nutrient transformation between soil, fertilizer and plant. As EBFM had the dual functions of fertilizer effect function method and soil testing＆fertilizer recommendati
ISSN:2095-6819
2095-6819