为了改进现行林木害虫发生量调查方法(株有卵、虫量,米枝卵、虫量,百叶卵、虫量等法)操作烦琐、精度低、通用性差等不足,从1983—1985年我们采用了枝叶测重法——即发生在寄主单位重量的枝叶上的卵、虫量(卵、虫量/每克枝叶)的方法,对榆蓝叶甲的第一代卵发生量进行了调查,并运用数理统计的方法对 In order to improve the current investigation method of forest pests (eggs, insects, rice eggs, insects, eggs, insects and other methods) cumbersome operation, low precision, poor universality and so on, from 1983 to 1985 we use The foliage weight measurement method - that is, the amount of eggs, the amount of insects (the amount of eggs, the amount of insects per gram of branch and leaf) that occurs on the foliage of the host unit weight was investigated on the generation amount of the first generation of oviposition, And using mathematical statistics method