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| 生态平衡施肥模型与目标产量施肥模型比较研究 |
| Comparison of Target Yield Method and Ecological Balanced Fertilization Model |
| 投稿时间：2014-10-23 |
| DOI：10.13254/j.jare.2014.0287 |
| 中文关键词: 生态平衡施肥模型 目标产量施肥模型 特征参数 |
| 英文关键词: ecological balanced fertilization model target yield method diagnostic parameters |
| 基金项目:中国农业科学院科技创新工程项目(2014-cxgc-hyl) |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 recommendation (TYM was a typical one), it had many strongpoints, such as complete functions, plenty information, less parameter variations, accurate measurement, easy for obtaining parameters, precise calculation, etc. |
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