| 韩群鑫，刘嘉华，李斌，程东美*.兰花蓟马Dichromothrips corbetti (Priesner)对秋兰的危害及防治[J].植物保护,2013,39(6):143-146. |
| 兰花蓟马Dichromothrips corbetti (Priesner)对秋兰的危害及防治 |
| Damages caused by Dichromothrips corbetti to Cymbidium ensifolium‘Qiulan’ and control measures |
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| DOI： |
| 中文关键词: 兰花蓟马 秋兰 危害 防治 |
| 英文关键词:Dichromothrips corbetti Cymbidium ensifolium damage control measure |
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| 中文摘要: |
| 采用田间跟踪调查法，调查了兰花蓟马［Dichromothrips corbetti (Priesner)］对秋兰不同品种的为害情况，并进行了田间药效试验。田间调查表明，兰花蓟马聚集为害秋兰的花和嫩芽，受害花瓣和花葶上往往出现褐色条纹，受害严重的花蕾不能开放；受害嫩芽初期出现水浸状斑块，待嫩芽长大，叶片展开后，留下褐色斑点，易与病害混淆。不同品种芽和花受害差异性调查结果表明，‘荷花素’嫩芽受害最严重，‘仁化白’、‘银针素’、‘金丝马尾’等3个品种间没有显著差异；而‘仁化白’花上成虫数量最多。田间药效试验表明：480 g/L毒死蜱乳油对秋兰幼芽有较好的保护效果，处理后7 d和14 d的防治效果分别为64.22%和73.60%。 |
| 英文摘要: |
| The orchid thrips Dichromothrips corbetti (Priesner) is an important pest of the orchids. The injury to the cultivars of Cymbidium ensifolium ‘Qiulan’ caused by D.corbetti was investigated in Guangzhou and the insecticides to control orchid thrips in the field were selected. The results showed that crowds of D.corbetti attacked the flowers and seedlings of orchids with their stylets, which caused the brown streaks on the petals and peduncles. At the base of orchid seedlings, the brown patches appeared initially, but with the seedling growing up, the brown patches on the leaf became the brown spots, which was easily confused with the disease of orchids in the field, and the bud of flower attacked seriously couldn’t open. The seedlings of ‘Hehuasu’was suffered the most serious injury in the four cultivars of ‘Qiulan’. However, difference of the damages among the other three cultivars, ‘Renhuabai’, ‘Yinzhensu’and ‘Jinsimawei’, wasn’t significant, and the number of orchid thrips adults on the flower of ‘Renhuabai’ was the highest in the four cultivars. The results of chemical control in the field showed that 480 g/L chlorpyrifos EC had the best protection effects on the buds, and the control effects were 64.22% and 73.60% on the 7 days and 14 days after treatment, respectively. |
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