【摘要】 利用1980～1998年在山东青州调查的数据资料,结合相关气象因子及烟草蚜传病毒病的病情指数,采用BP神经网络方法建立了烟草蚜传病毒病的预测模型。利用该模型对1999～2002年的发病情况进行预测,预测准确度较高。BP神经网络为烟草蚜传病毒病的预测预报提供了一种新方法。更多还原

【Abstract】 Based on data of meteorological factors and tobacco virus diseases transmitted by aphids from 1980 to 1998 in Qingzhou of Shandong province prediction models were established by means of BP neural network. Prediction of 1999-2002 was carried out respectively and results showed that the accurate ratio of prediction was high. BP neural network can be used as a new effective method to predict the trend of tobacco virus diseases transmitted by aphids.更多还原