麦茎谷蛾(Ochsencheimeria taurella Den·et Schiff)于70年代中期在我县沿海乡镇发现,1980年后,逐年加重,不断西移扩散危害,严重威胁三麦生产。笔者于1987年春季麦茎谷蛾幼虫期,对麦茎谷蛾的空间分布型及抽样技术进行了初步探讨,现将调查统计结果报告如下。 调查统计方法 调查方法:在4月初至5月上旬,麦茎谷蛾幼虫期,选择靠近村庄生长均匀的麦田先后收集了21组幼虫的调查资料,每次每块田采用分层随机取样法选20点,每点用特制的33.3×33.3厘米的铁条框 Ochsencheimeria taurella Den et Schiff was found in the coastal villages and towns of our county in the mid-1970s. After 1980, it increased year by year, constantly shifting the harm to the west and threatening the production of three wheat. The author in the spring of 1987 wheat stem moth larvae, the spatial distribution of wheat stem moth and sampling techniques were discussed, the survey results are reported as follows. Survey method of statistical methods: Early in April to early May, wheat stem moth larvae, choose to grow near the village of wheat fields have collected 21 sets of larvae survey data, each field by stratified random sampling method 20 points, each point with a special 33.3 × 33.3 cm iron box