| 摘要: |
| 室内测定了3% 高效氯氰菊酯微囊悬浮剂、1.2% 烟碱· 苦参碱乳油、25% 灭幼脲可湿性粉剂 和 2% 阿维· 苏云菌可湿性粉剂4 种药剂对海榄雌瘤斑螟（Ptyomaxia sp.）1~2 龄幼虫的防治效果。结果 表明，在5 000 倍 ~100 000 倍稀释药剂测定范围内，不同药剂处理之间海榄雌瘤斑螟幼虫死亡百分率均 值差异极显著，防治效果为高效氯氰菊酯＞烟碱 · 苦参碱＞灭幼脲＞阿维 · 苏云菌。喷药防治后第 10 天， 高效氯氰菊酯 5 000 倍液、10 000 倍液、50 000 倍液以及灭幼脲 5 000 倍液的海榄雌瘤斑螟幼虫死亡百分 率为 91.67%~93.33%，烟碱 · 苦参碱 5 000 倍液为 87.50%。3 月下旬至 4 月上旬，高效氯氰菊酯、灭幼脲 和烟碱 · 苦参碱在红树林中防控海榄雌瘤斑螟危害具有应用前景。 |
| 关键词: 海榄雌瘤斑螟 红树林 防治 |
| DOI： |
| 分类号: |
| 基金项目:省自然科学基金 |
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| Analysis on the Difference of Control Efficacy against Ptyomaxia sp. in Laboratory among Four Pesticides |
|
Xu Jiaxiong
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Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization/Guangdong Academy of Forest
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| Abstract: |
| The control effects of 3% Cypermethrin microcapsule suspension, 1.2% Nicotine-matrine emulsion, 25% Chlorbenzuron wettable powder and 2% Abamectin-bacillus thuringiensis wettable powder against 1-2 instar larvae Ptyomaxia sp. were determined in laboratory. Results showed that, in the range from 5 000 to 100 000 times diluted solution, the mean of death rate among these four pesticide treatments were significantly different, the control effect was highest for Cypermethrin and then followed by Nicotine-matrine, Chlorbenzuron and Abamectin-bacillus thuringiensis. On the tenth day post treatment with 5 000, 10 000, 50 000 times diluted solution of Cypermethrin and 5 000 times diluted solution of Chlorbenzuron, the death rates were among 91.67% -
93.33%，the death rates in the groups that treated with 5 000 times diluted solution of Nicotine-matrine were 87.50%. These three kinds of pesticides of Cypermethrin, Chlorbenzuron and Nicotine-matrine showed potential application prospects for the management of Ptyomaxia sp. in mangrove forest during late March and early April. |
| Key words: Ptyomaxia sp. mangrove control |
