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杨树冰核细菌溃疡病的测报技术
引用本文:董爱荣,刘雪峰,薛煜,邵忠文,项存悌,苏贵林,潘淑英,姜国义,张景华,李军,杨晓林,姜希德,林海波,韩维新,王传伟.杨树冰核细菌溃疡病的测报技术[J].东北林业大学学报,2001,29(3):120-122.
作者姓名:董爱荣  刘雪峰  薛煜  邵忠文  项存悌  苏贵林  潘淑英  姜国义  张景华  李军  杨晓林  姜希德  林海波  韩维新  王传伟
作者单位:1. 东北林业大学.
2. 黑龙江省大庆市林业局
3. 黑龙江省阿城市林业局
4. 黑龙江省肇东市林业局
基金项目:国家“九五”科技攻关子专题
摘    要:运用逐步回归分析方法,建立了多元线性的中期预报方程,入选的自变量有初台病情y0、年平均温度t1、温湿比x1和湿雨比x24个因子,该模型可以预测第二年的病情指数,根据病情指数随时间增长的趋势,选用灰色方法建立了GM(1、1)数学模型,模型中的二个参数a=-0.3786,tt=8.4853,按距离贴近原则,可作出中长期预报。

关 键 词:杨树  冰核细菌溃疡病  预测预报

The Forecast Technique of Poplar INA Bacterial Canker
Dong Airong, Liu Xuefeng, Xue Yu, Shao Zhongwen. Xiang Cunti.The Forecast Technique of Poplar INA Bacterial Canker[J].Journal of Northeast Forestry University,2001,29(3):120-122.
Authors:Dong Airong  Liu Xuefeng  Xue Yu  Shao Zhongwen Xiang Cunti
Abstract:Using stepwise variable selection method, the authors set up the multi-variant linear regression forecasting equation, initial disease index y0. annual average temperature ti. the ratio of temperature to relative humidity xl and the ratio of relative humidity to precipitation x2 are selected into the model. it can predict the next year's disease index. Use grey method. the authors set up the GM(l. l) model. the values of the two parameters in the model .are:a= -0. 378 6. u=8. 485 3. According to the rule nestled up against the distance. it can make middle or long period forecast.
Keywords:Poplar  Ice nucleation active bacterial canker  Forecast
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