| 陈世夫,肖永昌,吕建芳,左常智.水中混悬物对微生物杀虫剂灭蚊幼效果的影响[J].Chinese journal of Epidemiology,1987,8(1):46-48 |
| 水中混悬物对微生物杀虫剂灭蚊幼效果的影响 |
| Interference of Suspension in Water to the Effect of Biological Insecticide on Mosquito larvae |
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| Abstract: |
| 苏云金杆菌以色列变种与球形芽孢杆菌1593的杀灭蚊幼虫之毒效可受水的污浊状态的明显影响,过滤除去污水中的悬浮物可使苏云金杆菌的毒效较滤前提高42%,球形芽孢杆菌1593提高59%。实验水中加入河砂、粘土、淤泥等对这两种微生物杀虫效果均有显著的破坏作用,这种破坏作用主要取决于混悬物的颗粒直径大小(呈反比)及混悬物的浓度(呈正比),不同蚊种对悬浮物的这种效应也具有明显的差异。 |
| English Abstract: |
| The toxicity of shuringensis subsp. israelensis and Bacillus spnaericus strain 1593 against mosquito larvae was conspicuously affected by contaminated water. Comparatively, they could be raised by 42% and 59% respectively by filtration of the suspension from the comtaminated water. Putting river sand, mud or sludge into experimental water resulted in overt destruction of the toxicity of the two species. The extent of affection varied with the diameter of the suspension particles (in direct proportion) and the concentration of the suspension (in reverse proportion). The difference was relatively significant among different species of mosquitoes. |
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