摘要
针对关中地区杨树食叶蛾类的群体危害特征,引用模糊分析方法进行了防治适期的评估尝试。结果表明,从群落角度出发,在陕西的关中地区防治杨树食叶蛾类的最适期为下旬/5月～中旬/6月及下旬/7月～中旬/8月。
Reveals the characteristics of damage by moth coenosium in Guanzhong District, Shaanxi province. The Proper Control period based on Fuzzy analysis were from late March to middle June and from late July to middle August.
出处
《西北林学院学报》
CSCD
1991年第4期40-47,共8页
Journal of Northwest Forestry University
关键词
杨树
叶片
蛾类
危害
防治
poplar, leaf - vorous insects, proper control period
