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榆树是我区绿化的主要乡土速生树种之一,全区目前已栽植4,000多万株。近年来由于榆蓝金花虫连年成灾,一年发生两代,常把树叶吃光,平均每年损失榆材7万多立方米,价值1,000多万元。榆蓝金花虫的危害,大大地影响了榆树综合效益的发挥,严重地挫伤了群众栽植榆树的积极性。为解决生产中这一实际问题,我们在省林业技术指导站的大力支持和省林科所的指导下,与有关县共同协作,从1980年开始,在鄢陵、襄县进行了小面积药剂筛选和防治方法的
Elm tree is one of the main native tree species of afforestation in our district, and the region now has more than 40 million plants planted. In recent years, due to the endemic disease of Ulmus lactiflora, perennial occurrences of two generations a year, leaves are often eaten, with an average annual loss of more than 70,000 cubic meters of elm wood worth more than 10 million yuan. Ulmus gold pest damage, greatly affected the comprehensive benefits of elm play, severely dampened the enthusiasm of the masses planted elm. In order to solve this practical problem in production, under the guidance of provincial forestry technical guidance station and under the guidance of provincial forestry department, we cooperated with relevant counties. Since 1980, we have conducted small-area pharmaceutical screening in Yanling and Xiang County And prevention methods