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A study on the occurrence tendency of Tryporyza incertulas by grey Prediction

Published online by Cambridge University Press:  19 September 2011

Ye Zheng-Xiang
Affiliation:
Jiangxi Agricultural Sciences Academy, Jiangxi, Republic of China
Li Ri-Zhi
Affiliation:
Jiangxi Agricultural Sciences Academy, Jiangxi, Republic of China
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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:

model I x(t + 1) = 71.2131e0.1136t - 68.2131

model II x(t + 1) = 58.2206e0.1254t - 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:

modèle I x(t + 1) = 71,2131e0.1136t - 68,2131

modèle II x(t + 1) = 58,2206e0.1254t - 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.

Type
Articles
Copyright
Copyright © ICIPE 1991

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References

REFERENCES

Ju-long, Deng (1985) Grey System. National Defence Industry Press.Google Scholar
Ju-long, Deng (1985) Grey Control System. Middle China Industry College Press.Google Scholar