2015考研英语通过阅读识单词：植物也会发烧_大学英语单词

2015考研英语通过阅读识单词：植物也会发烧

　　考研英语单词是考研考生比较麻烦的一项工作，背了忘，忘了再背，而一个单词还有很多词义，在线小编整理了2015考研英语通过阅读识单词，希望大家能通过阅读翻译结合语境来牢记单词意义。

　　Even plants can run a fever, especially when theyre under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away- straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide spraying rather than rain poison on a whole field, which invariably includes plants that dont have pest problems.

　　Even better, Paleys Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded may showing where plants were running fevers. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.

　　The bad news is that Paleys company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. This technique can be used on 75 percent of agricultural land in the United States, says George Oerther of Texas AM. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.