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采用常规喷雾法,比较了几种药剂对荔枝蝽蟓Tessaratoma papillosa Drury若虫的室内毒力和田间药效。室内毒力测定结果表明,有5种药剂毒力较高,依次为:丁硫克百威>高效氯氟氰菊酯>啶虫脒>敌百虫>呋虫胺,24 h的LC50分别为4.24、6.43、7.57、11.55、14.14 mg/L。田间试验结果表明,5%高效氯氟氰菊酯微乳剂、20%呋虫胺可溶粒剂、25%啶虫脒乳油、200 g/L丁硫克百威乳油、90%敌百虫晶体1000倍液药后1-14 d对荔枝蝽蟓若虫的防效分别为99.26%-100%、91.77%-100%、80.40%-90.09%、78.37%-85.65%、80.33%-91.14%。5%高效氯氟氰菊酯微乳剂和20%呋虫胺可溶粒剂对荔枝蝽蟓若虫的防治效果最好,25%啶虫脒乳油和90%敌百虫晶体的防效一般,而200 g/L丁硫克百威乳油的防效则相对较差。
The indoor toxicity and field efficacy of several pesticides on Tessaratoma papillosa Drury nymphs were compared by conventional spray method. The results of indoor toxicity test showed that there are five kinds of agents with high toxicity, which are as follows: carbothiazide, lambda-cyhalothrin, acetamiprid, trichlorfon and dinotefuran. The LC50 values at 24 h 4.24, 6.43, 7.57, 11.55, 14.14 mg / L. Field trials showed that 5% lambda-cyhalothrin microemulsion, 20% dinotefuran soluble granules, 25% acetamiprid EC, 200 g / L carbosulfan EC, 90% trichlorfon crystal The control effects on litchi bugs nymphs and nymphs were 99.26% -100%, 91.77% -100%, 80.40% -90.09%, 78.37% -85.65% and 80.33% -91.14%, respectively. 5% lambda-cyhalothrin microemulsion and 20% dinotefuran soluble granules had the best control effect on litchi bugs nymphs, 25% acetamiprid EC and 90% The control efficacy of 200 g / L carbosulfan was relatively poor.