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
2025-04-09
34
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] In order to apply pesticide spraying precisely, we can use infrared scanning to_____.
选项
A、estimate the damage to the crops
B、measure the size of the affected area
C、draw a color-coded map
D、locate the problem area
答案
D
解析
依据文章第二段第四行,说明目的是确定有问题的区域,以使农民有针对性地使用杀虫剂。
转载请注明原文地址:https://tihaiku.com/zcyy/4033569.html
相关试题推荐
Therehavebeendemonstrationsonthestreets______therecentterroristattack.A
Thetroopswereina______position,completelyexposedtoattackfromtheair.A、
EndangeredSpeciesEndangeredspeciesareplants
EndangeredSpeciesEndangeredspeciesareplants
Thateveningrovinggangsofwhiteteenagersbegantoattackblacksindowntown
TheattackoftheWorldTradeCenterwillleavea______impressiononthosewho
Accordingto_____acrosstherelevantresearchcommunity,thepublishedattackre
TheattackoftheWorldTradeCenterwillleavea____impressiononthosewhohav
Thepresident’s____remarksinhisspeechmetwithalotofattacksfromotherco
Theyalsowantthepolice’suseofforcekeptincheck,especiallyinpoorneighb
随机试题
TechniquesforOralPresentationInyouruniversityw
以下对用户口令进行限定的措施中,()对提高安全性来说是无用的。A.最小改变口令
下列与蛔虫营寄生生活无关的是( )。A.生殖器官发达 B.消化器官退化 C
在我国,社区建设是指在党和政府的领导下,依靠社区力量,利用社区资源,强化社区功能
关于免疫浊度法特点的错误描述A.可检测抗原或抗体 B.可检测小分子抗原 C.
新生儿甲减筛查一般两项一起检查的是A.T+TB.T+TSHC.T+TSHD.FT
共用题干 TheRoadrunnerTheroadrunner(走雀)li
下列不属于客户风险监测实力类指标的是()。A.人力资源 B.资质等级 C.成
期货公司计算净资本时,应当按照企业会计准则的规定对相关项目充分计提()。A.资产
A.抑制巨噬细胞中一氧化氮合成酶 B.提高中枢神经系统的兴奋性 C.抑制巨噬
最新回复
(
0
)