广西蔗区的甘蔗螟虫多以二点螟Chilotraca intusatellus Snellen 为主,也有条螟 Proceras venosatus Walker 和黄螟 Tetramoera schistaceana Snellen等混合发生。尽管这三种螟虫在发生期上有所差异,但四五月间,田间常常有三种或两种同时出现,往往使蔗田缺苗断垄,造成损失,是广西蔗区的一大害。为了探索它的田间分布类型,选择田间抽样调查最佳方法, Most sugarcane borers in sugarcane field of Guangxi were mainly Chilotraca intusatellus Snellen and Proceras venosatus Walker and Tetramoera schistaceana Snellen. Although the three stem borers vary in their occurrence period, there are often three or two simultaneously occurring in the field during April and May, often resulting in the lack of seedlings and the loss of sugar cane fields. In order to explore its field distribution type, select the best method of field sample survey,