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A Study on the Occurrence Tendency of Tryporyza Incertulas by Grey Prediction

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Abstract

By means of the GM (1,1) modelling of grey system theory, the authors built the predicting models of Tryporyza incertulas (Walk) occurrence tendency with a computer, based on the insect pests occurrence data accumulated for 26 years from Feng Cheng county: \(bmod el\,I\,x\left( {t + 1} \right) = 71.2131{e^{0.1136t}} - 68.2131\) \(bmod el\,II\,x\left( {t + 1} \right) = 58.2206{e^{0.1254t}} - 55.2206\)

Tests indicated that the two models are valid, and if we use the models to predict the damage by Tryporyza incertulas in the year in which the damage by Tryporyza incertulas is serious, the results would contribute to the control of borers in the area in practice.

Résumé

Au moyen de la théorie du système de Modeloge Gris (GM 1,1), les auteurs ont développé des models de prédiction de la fréquence de la Tryporyza incertulas grâce à un ordinateur en se basant sur les dormées accumulées sur une période de 26 ans dans le comté de Feng Cheng: \(bmod \'e l\,I\,x\left( {t + 1} \right) = 71.2131{e^{0.1136t}} - 68.2131\) \(bmod \'e l\,II\,x\left( {t + 1} \right) = 58.2206{e^{0.1254t}} - 55.2206\)

Le test a prouvé que les 2 modèles sont valables, et que si nous nous en servons prévenir les dégâts causés par la Tryporyza incertulas durant l’année où lesdits dégâts sont très importants, les résultats pourraient nous aider dans la lutte contre les insectes rongeurs des céréales dans la région concernée.

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References

  • Deng Ju-long (1985) Grey System. National Defence Industry Press.

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  • Deng Ju-long (1985) Grey Control System. Middle China Industry College Press.

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Ye, ZX., Li, RZ. A Study on the Occurrence Tendency of Tryporyza Incertulas by Grey Prediction. Int J Trop Insect Sci 12, 263–267 (1991). https://doi.org/10.1017/S1742758400020774

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  • DOI: https://doi.org/10.1017/S1742758400020774

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