甘蔗二点螟(Chilo infuscatellus Snellen)是我国蔗区的重要害虫之一。但到目前为止对该虫还没有一套比较完善的测报方法。为了摸清二点螟在田间的分布状况,选择比较切合实际的田间抽样方法,作者于1986年5月在江西省万安县对第一代甘蔗二点螟的空间分布型及抽样技术作了初步研究。一、研究方法在5月中、下旬甘蔗二点螟三四龄幼虫高峰期,选择不同类型的宿根蔗和冬植蔗的田块(表2)逐行逐株调查二点螟幼虫数,依田间 Chilo infuscatellus Snellen is one of the important pests in sugarcane area of ​​China. But so far the worm does not have a complete set of methods of measuring and reporting. In order to find out the distribution of Borer in the field and choose a more realistic field sampling method, the author made a survey on the spatial distribution and sampling techniques of the first generation C. punctatus in Wan’an County, Jiangxi Province in May 1986 initial research. First, the research methods In mid-May, late third-instar larvae of sugarcane two point borer at the peak, select different types of pests and winter sugarcane fields (Table 2) between