An electric field strongly deters whiteflies from entering window-open greenhouses in an electrostatic insect exclusion strategy
An electric field strongly deters whiteflies from entering window-open greenhouses in an electrostatic insect exclusion strategy
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DOI：
10.1007/s10658-012-0014-5
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发表时间：
2012-12-01
影响因子：
1.8
通讯作者：
Toyoda, Hideyoshi
中科院分区：
文献类型：
--
作者：
Nonomura, Teruo;Matsuda, Yoshinori;Toyoda, Hideyoshi
评价了单电荷偶极电场屏的双重功能（昆虫驱避和捕获），以成功地将粉虱从开窗温室中排除。该屏蔽由三部分组成：1）以5 mm间隔平行排列的绝缘导线（ICW），2）放置在ICW层两侧3 mm内的两个不锈钢网，和3）用于带负电荷的ICW的电压发生器。该屏幕在ICW层和ICW侧表面之间以及ICW之间形成两个电场。在1.5- 2.5kV的负充电下，所有到达筛网外表面的粉虱避免进入电场并飞离筛网。这种回避受到3 m s（-1）风的干扰，因为昆虫被强制性地吹进室内。然而，几乎所有粉虱（99.4%）都是用ICW捕获的。这些结果表明，昆虫捕获功能是有效的，以补充失败的驱逐。在附接有筛网的部分和非筛网部分中进行温室测定，其中温室用隔板分隔。在3个月的运行中，屏障耐用且具有排除害虫的功能，并且更好的空气通风改变了温室内的气候条件。因此，本研究表明，我们的电场屏幕可以提供一个通风的条件，番茄在一个窗口开放的温室，并成功地排除粉虱使用双屏幕功能。
Dual functions (insect repelling and capturing) of a single-charged dipolar electric field screen were evaluated to successfully exclude whiteflies from a window-open greenhouse. The screen consisted of three parts: 1) insulated conductor wires (ICWs) arrayed in parallel at 5 mm intervals, 2) two earthed stainless nets placed within 3 mm of both sides of the ICW layer, and 3) a voltage generator for the negatively charged ICWs. The screen formed two electric fields between the ICW-layer and the ICW-side surface of the earthed net and between the ICWs. At negative charging of 1.5-2.5 kV, all whiteflies reaching the outer surface of the screen net avoided entering the electric field and flew away from the screen. This avoidance was disturbed by 3 m s(-1) wind, as the insects were compulsorily blown inside. However, almost all whiteflies (99.4 %) were captured with the ICW. These results indicate that the insect-capturing function is effective to complement a failure to repel. A greenhouse assay was conducted in the screen-attached and non-screened parts in which a greenhouse was divided with a partition. During the 3-month operation, the screen was durable and functional for excluding pests, and better air ventilation changed the climate conditions in the greenhouse. Thus, the present study demonstrated that our electric field screen can provide an airy condition for tomatoes in a window-open greenhouse and successfully exclude whiteflies using dual screen functions.