| 杨海林1，余清2，谷星慧1，史明慧1，张立猛1*,2015,斯氏钝绥螨对烟蓟马的防治效果研究[J].环境昆虫学报,37(5):1037-1042 |
| 斯氏钝绥螨对烟蓟马的防治效果研究 |
| Evaluation of Amblyseius swirskii (Acari: Phytoseiidae) as biological control agents of Thrips tabaci Lindeman on tobacco |
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| DOI： |
| 中文关键词: 烟 烟蓟马 斯氏钝绥螨 生物防治 |
| 英文关键词:Nicotiana tabacum L Thrips tabaci Lindeman Amblyseius swirskii Athias Henriot biological control |
| 基金项目:云南省烟草公司科研业务专项基金(2014YN09) |
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| 中文摘要: |
| 为明确烟叶上释放斯氏钝绥螨防治烟蓟马的最佳释放比例和部位，本文研究了6个不同比例和3个不同部位释放斯氏钝绥螨后烟蓟马的种群变化。结果表明：按益害比10∶1释放斯氏钝绥螨在较短时间内即能有效控制烟蓟马，释放10 d后，烟蓟马的数量即下降到8.33头/株，20 d后下降到2.67头/株，40 d后烟蓟马种群消失。10 d后的相对防治效果达71.26%，20 d后达90.79%。在烟叶的中部、下部和基部释放斯氏钝绥螨均能有效控制烟蓟马。建立释放10 d后6个比例下烟蓟马的死亡率与天敌数量的关系方程，y=106.857×e-104.257/x, 计算出烟蓟马的死亡率达到50%的释放数量为LT50=137头/株，即按益害比4.6∶1释放; 死亡率达到90%的释放数量为LT90=607头/株，即按益害比20.2∶1释放。以释放比例为益害比10∶1为例，建立了烟蓟马的死亡率与时间的关系方程y=109.689×e-4.532/x，计算出释放斯氏钝绥螨后烟蓟马的死亡率达到50%的时间LD50=5.8 d，死亡率达到90%的时间为LD90=22.9 d。本文为利用斯氏钝绥螨防治烟蓟马提供依据。 |
| 英文摘要: |
| The population dynamics of Thrips tabaci Lindeman after releasing Amblyseius swirskii Athias Henriot with 6 releasing different rates and 3 position was studied to clear the apposite releasing rate and position. And the results showed that thepopulation ofT. tabaci could be controlled in a short period after releasing the natural enemies, and the average number of the pests decreased only 8.33 per plant form 30 in 10 days, and decreased only 2.67 per plant in 20 days, and the predators cleared away the pests in 40 days. It has been calculated, the relative control effect was 71.26% in 10 days, and 90.79% in 20 days. The result was similar to release the predators among the middle part, lower part and base part of the plants, and the population ofT. tabaciwas disappeared all. The equation between the mortality rate of T. tabaci after releasing the predators and the number ofA. swirskii in10 days was established as y=106.857×e-104.257/x, and we calculated that when 137 predators per plant, the mortality rate of T. tabaci was 50% in 10 days, and when 607 predators, the mortality rate was 90%. The equation between the mortality rate of T. tabaciafter releasing 10 predators per pest and time was established as y=109.689×e-4.532/x, and the time of the mortality rate ofT. tabaci was 50% and 90% in 5.8 d and 22.9 d when releasing 10 predators per pest. The results provided evidence to control T. tabaci by releasing A. swirskii. |
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