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9种杀虫剂对堆蜡粉蚧的田间防治效果
作者: 王凤英  黎柳锋  廖仁昭  姜建军  廖世纯*  
单位: (广西农业科学院 植物保护研究所/广西作物病虫害生物学重点实验室  南宁 530007)  
关键词: 堆蜡粉蚧  龙眼  杀虫剂  防治效果  
分类号:S436.67
出版年,卷(期):页码:2016 ,47 ( 12 ): 页码:2078-2083
摘要:

【目的】筛选对堆蜡粉蚧若虫有较好防效的杀虫剂,为堆蜡粉蚧的田间防治提供科学依据。【方法】采用喷雾施药法分别测定9种杀虫剂单剂及其中两种药剂按不同比例混用后对龙眼上堆蜡粉蚧的田间防效。【结果】药后7 d,22.4%螺虫乙酯SC 4500和3500倍处理及25%噻嗪酮WP+48%毒死蜱EC(质量比为7∶3 )2000和1000倍处理对堆蜡粉蚧的防效均高于90.00%,50%噻虫胺WG、25%噻嗪酮WP+48%毒死蜱EC(1∶1)和10%吡虫啉WP 1000倍处理对堆蜡粉蚧的防效在80.00%以上,其余药剂的防效均低于76.00%。药后15 d,22.4%螺虫乙酯SC 4500和3500倍、25%噻嗪酮WP+48%毒死蜱EC(1∶1)2000和1000倍、25%噻嗪酮WP+48%毒死蜱EC(3∶7)1000倍处理对堆蜡粉蚧的防效在95.00%以上,48%毒死蜱EC和10%吡虫啉WP 1000倍处理对堆蜡粉蚧的防效在90.00%以上,25%噻嗪酮WP+48%毒死蜱EC(3∶7)2000倍处理、25%噻嗪酮WP+48%毒死蜱EC(7∶3)和20%甲氰菊酯EC 1000倍处理防效在80.00%以上,其余药剂的防效则在80.00%以下。【结论】22.4%螺虫乙酯SC、25%噻嗪酮WP+48%毒死蜱EC(质量比1∶1、3∶7和7∶3)混用可作为果园中防治堆蜡粉蚧的首选药剂,48%毒死蜱EC和20%甲氰菊酯EC可作为备选药剂。

【Objective】Effective insecticides were screened out for controlling Nipaecoccus vastator Maskell, in order to provide science basis for field control. 【Method】Field control effects of nine insecticides and two insecticides mixed at various ratios on N. vastator Maskell were determined using spraying method. 【Result】Results showed that, on day 7 after spraying, in terms of control effects, 22.4% spirotetramat SC(4500 and 3500 times) and 25% buprofezin WP+48% chlorpyrifos EC(mass ratio being 7:3)(2000 and 1000 times) reached more than 90.00%, 50% clothianidin WG, 25% buprofezin WP+48% chlorpyrifos EC(1∶1) and 10% imidacloprid WP(1000 times) more than 80.00%, other insecticides less than 76.00%. On day 15 after spraying, as for control effect, 22.4% spirotetramat SC(4500 and 3500 times), 25% buprofezin WP+48% chlorpyrifos EC(1∶1)(2000 and 1000 times) and 25% buprofezin WP+48% chlorpyrifos EC(3∶7)(1000 times) reached more than 95.00%, 48% chlorpyrifos EC and 10% imidacloprid WP(1000 times) more than 90.00%, 25% buprofezin WP+48% chlorpyrifos EC(3∶7)(2000 times), 25% buprofezin WP+48% chlorpyrifos EC(7∶3) and 20% fenpropathrin EC(1000 times) more than 80.00%, other insecticides less than 80.00%. 【Conclusion】Mixtures of 22.4% spirotetramat SC, 25% buprofezin WP and 48% chlorpyrifos EC(mass ratios being 1∶1, 3∶7 and 7∶3) can be used as preferred insecticides to control N. vastator Maskell in orchard, and 48% chlorpyrifos EC and 20% fenpropathrin EC can be taken as alternative pesticides.

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