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针扦昆虫标本,首先是将虫毒死而后进行制作。毒死昆虫要用毒瓶(或毒管)。毒瓶的制作方法过去分三层:底层放毒药;中层放锯末,最上一层放石膏。这种毒瓶有三个缺点:①制作比较费事;②使用中石膏层破裂即不能再用;③毒药失效后需要重作。随着工业的发展,目前制作毒瓶也有了改进,石膏和锯末两层用一块和瓶子内径相同(实际作时
Needle skewer insect specimens, the first is poisonous insects and then produced. To poison insects to use poison bottles (or poison). Toxic bottles of production methods in the past three layers: the bottom of the poison; the middle put sawdust, put the most upper layer of gypsum. This poison bottle has three disadvantages: ① making more trouble; ② the use of gypsum layer rupture that can not be reused; ③ poison need to re-operation after failure. With the development of industry, the current production of poison bottles have also been improved, gypsum and sawdust two with a bottle and the same diameter (the actual time