论文部分内容阅读
用美国Ｂａｃｔｉｍｏｓ可湿性粉剂（Ｂｔｉ－１８９７）和国产Ｂｔ－１８７乳剂生产的两种漂浮颗粒剂灭中华按蚊幼虫的结果表明：后者对中华按蚊幼虫的效价（１２０ＩＴＵ／ｍｇ）比前者（３７０ＩＴＵ／ｍｇ）低，但制成颗粒剂后（效价２２０ＩＴＵ／ｍｇ）比前者（效价１３０ＩＴＵ／ｍｇ）高。稻田应用０．８１ｇ／ｍ２剂量Ｂｔ－１８７漂浮颗粒剂控制中华按蚊幼虫，持效可达１６天，Ｂａｃｔｉｍｏｓ漂浮颗粒剂为１３天。
The results of killing two Chinese anopheles larvae with two kinds of floating granules produced by American Bactimos wettable powder (Bti-1897) and domestic Bt-187 emulsion showed that the titer of the latter to Anopheles sinensis larvae (120ITU / mg) (370ITU / mg), but after the preparation of granules (titer 220ITU / mg) higher than the former (titer 130ITU / mg). Paddy field application of 0.81g / m2 dose of Bt-187 floating granules control Anopheles sinensis larvae, up to 16 days persistence, Bactimos floating granules for 13 days.