【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。更多还原

【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 against1-2 instar larvae Ptyomaxia sp. were determined in laboratory. Results showed that, in the range from 5 000 to100 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 were87.50%. 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.更多还原