椿象驱逐剂即将问世
文章来源:未知 文章作者:meng 发布时间:2010-10-11 03:15 字体: [ ]  进入论坛
(单词翻译:双击或拖选)

Help may be on the way for millions of people on the East Coast bugged1 out about the invasion of stink2 bugs3(椿象) . Scientists have reported a key advance in efforts to develop the first commercial repellent(防护剂) for stinkbugs, which are emerging as a major nuisance(损害,麻烦事) to homeowners and a devastating4 pest to some farm crops. They identified a natural substance in a fungus5(真菌,霉菌) that infects a common weed and found that it shows potential as the first stinkbug repellent. Their study appeared in ACS' bi-weekly Journal of Agricultural and Food Chemistry. Hiromitsu Nakajima and colleagues note that stinkbugs are no strangers to Japan. Indeed, they long have ranked as major pests of rice crops there and in some other countries. In contrast, the brown marmorated stinkbug seems to have gotten a foothold(据点,立足处) in the United States around 1998, and since then has spread, especially in the Mid-Atlantic states, invading homes and damaging fruit and vegetable crops. The nuisance bugs get their name from the skunk-like odor they emit when crushed(压碎) or annoyed. Farmers are trying to control the pests using a variety of commercial insecticides, which kill the bugs. A stinkbug repellent could be just as effective in keeping the bugs at bay, but no reports on development of such materials have appeared in scientific journals, they say.

The scientists isolated6 a fungus from the green foxtail plant, a common weed found in Japan as well as the United States and other countries. The fungus lives inside the plant and appears to help protect the foxtail(狐尾草) from insect pests and disease. In laboratory tests, extracts of the fungus strongly repelled7(击退,排斥) the white-spotted stinkbug, which they used as a test subject because it is easy to collect, maintain, and handle under laboratory conditions. The scientists identified an ingredient in the extract that is capable of repelling8 up to 90 percent of stinkbugs and suggest that this chemical could be part of the first repellent for controlling stinkbugs. The substance repelled the stinkbugs as effectively as naphthalene(卫生球) , an ingredient in mothballs(封存中) and a gold-standard for measuring the effects of insect repellents. A chemically modified version of the substance was almost twice as effective napthalene.



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1 bugged 095d0607cfa5a1564b7697311dda3c5c     
vt.在…装窃听器(bug的过去式与过去分词形式)
参考例句:
  • The police have bugged his office. 警察在他的办公室装了窃听器。 来自《简明英汉词典》
  • He had bugged off before I had a chance to get a word in. 我还没来得及讲话,他已经走了。 来自《简明英汉词典》
2 stink ZG5zA     
vi.发出恶臭;糟透,招人厌恶;n.恶臭
参考例句:
  • The stink of the rotten fish turned my stomach.腐烂的鱼臭味使我恶心。
  • The room has awful stink.那个房间散发着难闻的臭气。
3 bugs e3255bae220613022d67e26d2e4fa689     
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
参考例句:
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
4 devastating muOzlG     
adj.毁灭性的,令人震惊的,强有力的
参考例句:
  • It is the most devastating storm in 20 years.这是20年来破坏性最大的风暴。
  • Affairs do have a devastating effect on marriages.婚外情确实会对婚姻造成毁灭性的影响。
5 fungus gzRyI     
n.真菌,真菌类植物
参考例句:
  • Mushrooms are a type of fungus.蘑菇是一种真菌。
  • This fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出。
6 isolated bqmzTd     
adj.与世隔绝的
参考例句:
  • His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
  • Patients with the disease should be isolated. 这种病的患者应予以隔离。
7 repelled 1f6f5c5c87abe7bd26a5c5deddd88c92     
v.击退( repel的过去式和过去分词 );使厌恶;排斥;推开
参考例句:
  • They repelled the enemy. 他们击退了敌军。 来自《简明英汉词典》
  • The minister tremulously, but decidedly, repelled the old man's arm. 而丁梅斯代尔牧师却哆里哆嗦地断然推开了那老人的胳臂。 来自英汉文学 - 红字
8 repelling 404f2b412d0ea801afe58063d78dd5c6     
v.击退( repel的现在分词 );使厌恶;排斥;推开
参考例句:
  • He saw himself standing up and repelling a charge. 他仿佛看见自己挺身而起,打退了敌人的进攻。 来自辞典例句
  • Promote the healthy entertainment styles. Repelling the superstition, gambling, drugs and obscenity. 提倡健康娱乐。抵制封建迷信活动,拒绝黄、赌、毒。 来自互联网
TAG标签: People natural bugs pests
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