我县共营造洋槐林5万多亩,其中秦岭北麓沿山地区4万多亩,现已陆续成材,开始利用。但自1961年以来,由于尺蠖的为害,对林木的正常生长造成了严重威胁。为了有效地防治这一虫害,今年我们在眉县林场井索沟防虫站继续进行了定点观察和防治试验。现将有关情况整理如下,以供参考。 Our county has built a total of more than 50,000 acres of acacia trees, of which more than 40,000 mu have been built along the mountainous areas in the northern foot of Qinling Mountains. However, since 1961, the damage caused by the scaffolding has posed a serious threat to the normal growth of trees. In order to effectively prevent and control this pest, this year we are in Meixian Forest Farm Wellsou moth stations continue to carry out fixed-point observation and prevention and control tests. The relevant information is now organized as follows for reference.