Abstract: Basing on the data of 12 years, the method of BP neural network was applied to establish the predictionmodel of Myzus persicae occurrence for its prediction and forecast in tobacco field.The model exhibited prediction accura??cy of 99.43%, and back prediction accuracy of 87.36%, respectively.The prediction model could predict the occcurencedegree of Myzus persicae more than one month in advance, so the middle??term prediction model could be applied in IPMof Myzus persicae in tobacco field.

Key words: Myzus persicae, Occurrence degree, BP neural network, Prediction model

CLC Number: 

• S435.72