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小麦红吸浆虫Sitodiplosis m osellana Gehin 一年中大约有10 个月的时间以幼虫和茧生活在土壤中,因而淘土查虫是主要的掌握其种群动态的方法。根据小麦吸浆虫虫体大小和在盐水中的浮力特点,设计出了袋筛箩盐水淘虫法。即先用尼龙袋(网孔径0.5 m m )装土样洗泥,再用双层筛箩(上层筛网孔径约2 m m ×3 m m ,,下层箩孔径0.4 m m )洗泥去掉大颗粒杂物,然后用比重大于1.2 的盐水使幼虫和茧浮出水面,过滤捡虫。与传统的过筛法和盐水漂浮法相比,该方法所需设备简单,淘虫快速、省力、准确,对小麦吸浆虫的测报和研究有参考价值。
Sitodiplosis m osellana Gehin Wheat Alzheimer’s disease lives in soil for about 10 months of the year with larvae and cocoon. Therefore, Amorphate is the main method of controlling its population dynamics. According to the size and the buoyancy characteristics in the salt water, the design of the sift-in-salt solution and the nematode method was designed. That is to say, a nylon bag (mesh diameter 0.5 mm) shall be used for soil washing, and then double-layer sieve 箩 (the upper sieve pore size is about 2 mm × 3 mm, the lower 箩 pore size is 0.4 mm) The larvae and cocoon are then surfaced with brine with a specific gravity greater than 1.2 and filtered to collect worms. Compared with the traditional sieving method and brine floating method, the method requires simple equipment, rapid, labor-saving and accurate operation of the insects, and has reference value for the report and research of the midge of wheat.