| 农业病虫危害的突变理论及应用 |
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| 引用本文： | 赵惠燕,汪世泽.农业病虫危害的突变理论及应用[J].西北农业学报,1993,2(4):48-52. |
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| 作者姓名： | 赵惠燕 汪世泽 |
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| 作者单位： | 西北农业大学植保系, 陕西杨陵 712100;西北农业大学植保系, 陕西杨陵 712100 |
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| 摘 要： | 突变是生物科学的一种基本特性.突变理论是描述这种不连续、不光滑变化现象的数学工具.通过多年研究与观察,总结了农业主要病虫发生危害的突变规律,即:环境条件适宜,病虫危害从稳定安全区进入潜在危害区(不稳定区域),最后突变至稳定危害区;条件不适,病虫危害则从潜在危害区逆转.克服了突变理论在生物学上难以应用的三大困难,即:势函数难以用解析式表达,不易选定合适的控制变量和突变区域难以量化.建立了农业主要病虫发生危害的折叠、尖角突变模型.详细阐述了用突变理论确定突变区域和动态防治指标的方法以及用突变理论对病虫危害进行预测应用的方法.
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| 关 键 词： | 突变模型 病虫害 农业 危害 |
| 收稿时间： | 1993/3/26 0:00:00 |
| 修稿时间： | 1993/6/9 0:00:00 |
CATASTROPHE THEORY AND APPLICATION OF SOME MAIN PEST IN AGRICULTURE |
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| Zhao Huiyan and Wang Shize.CATASTROPHE THEORY AND APPLICATION OF SOME MAIN PEST IN AGRICULTURE[J].Acta Agriculturae Boreali-occidentalis Sinica,1993,2(4):48-52. |
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| Authors: | Zhao Huiyan and Wang Shize |
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| Institution: | Department of Plant Protection, Northwestern Agricultural University, Yangling Shaanxi 712100;Department of Plant Protection, Northwestern Agricultural University, Yangling Shaanxi 712100 |
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| Abstract: | The catastrophe is a basical character in biology.The catastrophe theory is a mathematical tool.with which the uncontinue and unsmooth variation phenomenon can be described.The catastrophe regularity of some main pest in Agriculture was studied through a great deal observation and analysis in this paper.The method overcome 3 difficulties of application of catastrophe theory to biology,and the method set up the fold catastrophe modle and cusp catastrophe modle,and the forecasting method with catastrophe modle and controlling target were elaborated. |
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| Keywords: | Catastrophe theory and application Catastrophe modle Pests Forecasting |
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