摘要
通过对达县2000年以来水稻纵卷叶螟发生为害程度影响因子的分析,筛选出影响稻纵卷叶螟发生为害程度的主导因子,运用多元逐步回归方法,建立适合达州地区水稻纵卷叶螟主害代发生为害程度的预测模型。经回测检验,各模型的历史符合率达81.82%~90.91%,且2011—2012年应用效果较好。
Dominant factors to affect occurrence and damage level of the rice leaf roller have been obtained since 2000.By analysis of the impact factors to occurrence and damage level of the rice leaf roller.Adopting the multivariate regression method,the prediction model of occurrence and damage level of the rice leaf roller was set up,which was suitable to be used in Dazhou Rice Areas.By repeated testing in the rice fields,the coincidence rate was 81.82%~90.91%,and with nice application effect from 2011 to 2012.
出处
《生物灾害科学》
2013年第1期86-89,共4页
Biological Disaster Science
关键词
稻纵卷叶螟
发生程度
预测模型
rice leaf roller [Cnaphalocrocis medinalis（Guenée）] occurrence level prediction model
