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当前位置: 首页 > 文章 > 30%乙唑螨腈悬浮剂对荔枝叶螨不同螨态的生物活性和田间防效 植物保护 2019 (4) 261-265
Position: Home > Articles > 30%乙唑螨腈悬浮剂对荔枝叶螨不同螨态的生物活性和田间防效 Plant Protection 2019 (4) 261-265

30%乙唑螨腈悬浮剂对荔枝叶螨不同螨态的生物活性和田间防效

作  者：
池艳艳;陈炳旭;全林发;董易之;徐淑
单  位：
广东省农业科学院植物保护研究所广东省植物保护新技术重点实验室
关键词：
30;乙唑螨腈悬浮剂;43;联苯肼酯悬浮剂;荔枝叶螨;生物活性;田间防效
摘  要：
为评价新型杀螨剂30%乙唑螨腈悬浮剂对荔枝叶螨的活性,对荔枝叶螨的不同螨态进行了室内活性测定及田间药效试验.室内试验结果表明:采用玻片浸渍法和浸叶法测得的30%乙唑螨腈悬浮剂对成螨的LC50分别为0.977和0.248 mg/L,其毒力分别是对照药剂43%联苯肼酯悬浮剂的0.50和7.33倍;分别采用浸叶法和浸叶碟法测定了30%乙唑螨腈悬浮剂对幼若螨和卵的活性,LC50分别为0.094和0.380 mg/L,活性分别为对照药剂43%联苯肼酯悬浮剂的4.07和98.40倍.处理24 h后,相同浓度的30%乙唑螨腈悬浮剂和43%联苯肼酯悬浮剂对荔枝叶螨的产卵抑制率和产卵抑制指数无明显差异,但处理48 h及72 h后,30%乙唑螨腈悬浮剂的产卵抑制率和产卵抑制指数显著高于43%联苯肼酯悬浮剂.田间防效试验结果表明:30%乙唑螨腈悬浮剂稀释4 500倍药后1 d防效达73%以上,药后20 d防效仍维持在90%以上,30%乙唑螨腈悬浮剂防治荔枝叶螨的速效性和持效性均优于43%联苯肼酯悬浮剂.
作  者：
CHI Yanyan;CHEN Bingxu;QUAN Linfa;DONG Yizhi;XU Shu;Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection;
单  位：
CHI Yanyan%CHEN Bingxu%QUAN Linfa%DONG Yizhi%XU Shu%Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection
关键词：
SYP-9625 30% SC;;bifenazate 43% SC;;Oligonychus litchii;;bioactivity;;field efficacy
摘  要：
In order to evaluate the acaricidal activity of newly developed acaricide SYP-9625 30% SC, laboratory and field experiments were conducted against Oligonychus litchii in different life stages. Under laboratory conditions, the LC_(50) values of SYP-9625 30% SC on the adult mites were 0.977 and 0.248 mg/L by slide-dipping and leaf-dipping method, respectively, which were 0.50 and 7.33 times the toxicity of the control bifenazate 43% SC. The LC_(50) values on the nymph mites and eggs determined by leaf-dipping method and leaf disc method were 0.094 and 0.380 mg/L, respectively, which was 4.07 and 98.40 times of bifenazate 43% SC. Both the oviposition inhibition rate and the oviposition inhibition index were not significantly different between SYP-9625 30% SC and bifenazate 43% SC at 24 h after treatment. However, SYP-9625 30% SC showed significantly higher levels of the above two indicators than bifenazate 43% SC at 48 h and 72 h after treatment. In field trials, control efficacy of SYP-9625 30% SC diluted 4 500 times was more than 73% at one day after treatment and maintained at 90% at 20 days after treatment, which showed a quicker action and a longer residual activity than bifenazate 43% SC.

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