摘要
通过对榆童锤角叶蜂发生危害情况的实地调查和室内饲养 ,系统研究了物候预测法、发育进度预测法、有效积温预测法和有效虫口基数预测法等发生期、发生量测报方法 ,建立了各虫态有效积温预测模型和有效虫口基数预测
Based on the field investigations and breeding Agenocimbex elmina in lab, several forecast methods were studied systematically, and two forecast models established.
出处
《甘肃林业科技》
2002年第4期9-11,共3页
Journal of Gansu Forestry Science and Technology
