首页
登录
职称英语
Even plants can run a fever, especially when they’re under attack by insects
Even plants can run a fever, especially when they’re under attack by insects
游客
2025-05-02
1
管理
问题
Even plants can run a fever, especially when they’re 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 (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest(害虫)problems.
Even better, Paley’s 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 map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s 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 Other of Texas A&M. 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. [br] Farmers can save a considerable amount of pesticide by_____.
选项
A、resorting to spot-spraying
B、consulting infrared scanning experts
C、transforming poisoned rain
D、detecting crop problems at an early stage
答案
A
解析
依据文章第二段最后一句。
转载请注明原文地址:http://tihaiku.com/zcyy/4058547.html
相关试题推荐
Thesoldierwas______ofrunningawaywhentheenemyattacked.A、scoldedB、charged
Thebadanddampweatherinthehotareawouldenabletheplantstoget____quick
TheattackoftheWorldTradeCenterwillleavea_____impressiononthosewhoha
(51)Beingangryincreasestheriskofinjury,especiallyamongmen,newres
(51)Beingangryincreasestheriskofinjury,especiallyamongmen,newres
(51)Beingangryincreasestheriskofinjury,especiallyamongmen,newres
Thisdictionaryis______intendedforAmericanlearnersofChinese.A、especiallyB
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsects
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsects
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsects
随机试题
大肆withoutrestraint;recklessly
在西街听到中国老太太讲一口流利的英语不足为奇。ItisnosurprisetohearelderlyChinesewomentherespe
小儿肺炎出现紫绀时,其化验结果,何种最可能出现A.SaO>85%还原Hb>5g/
(1)《普通高中历史课程标准(实验)》:知道汉代儒学成为正统思想的史实。 (2
A. B. C. D.
某乡镇企业甲以自有的办公大楼向银行乙抵押贷款,办理抵押时,只办理了抵押办公楼的登
甲、乙对登记在乙名下的1栋房的屋所有权归属发生争议,经法院审理后作出终审判决,
铸造 支托的宽度为A.磨牙颊舌径的1/2 B.磨牙颊舌径的2/3
美阳公司成立于2000年,是一家家电制造企业,主要生产电饭煲、饮水机等厨房电
A.必须先向消费者协会申诉 B.应当制作协议书 C.只能向人民法院提起民事诉
最新回复
(
0
)