| 施肥模型在我国推荐施肥中的应用 |
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| 引用本文： | 王兴仁,陈新平.施肥模型在我国推荐施肥中的应用[J].植物营养与肥料学报,1998,4(1):67-74. |
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| 作者姓名： | 王兴仁 陈新平 |
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| 作者单位： | 1.中国农业大学植物营养系 北京;100094 |
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| 摘 要： | 本文论述了定量化施肥技术的发展过程和施肥模型的地位，重点讨论了我国在应用经验模型推荐施肥方面存在的问题和拟解决的途径。主要的问题是，广泛采用的二次多项式模型使推荐施肥量偏高;试验因素水平数少，不能正确揭示肥料效应变化趋势;边际分析时忽视了函数极值判别和产投比。据此，建议今后应减少试验因素，适当增加因素水平;提倡相交直线施肥模型;边际分析前应对函数极值进行判别。
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| 关 键 词： | 施肥模型 推荐施肥 试验设计 |
APPLICATION OF FERTILIZATION MODEL FOR FERTILIZER RECOMMENDATION IN CHINA |
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| Wang Xingren,Chen Xinping,Zhang Fusuo,Mao Daru.APPLICATION OF FERTILIZATION MODEL FOR FERTILIZER RECOMMENDATION IN CHINA[J].Plant Nutrition and Fertilizer Science,1998,4(1):67-74. |
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| Authors: | Wang Xingren Chen Xinping Zhang Fusuo Mao Daru |
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| Affiliation: | 1.Department of plant nutrition;CAU;Beijing 100094 |
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| Abstract: | In the paper, the development of quantitative fertilization techniques and the role of fertilization models were discussed. The emphasis was put on the problems and their solutions in the application of empirical models for fertilization recommendation in Chiria. Recommended rates of fertilizers were overestimated based on the quadratic model: fertillzer reponse could not be described correctly because of the less levels of experiment factors; to ignore the judgen1ent of function extremal and the proporton of the value of output to that of input when determining the optimal rate of fertilizer by the margirial analysis. So that in the application of fertilization models, experimental factors should be reduced while the leve1s for a give should be accordlngly increased,the two linear model should be advocated: judgement of function extramal was essential before analysis. |
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