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
2023-07-25
26
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 (红外线的) 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 cold detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infra-red 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 50 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 infra-red 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 infra-red 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 infra-red scanning to ______.
选项
A、estimate the damage to the crops
B、draw a color-coded map
C、measure the size of the affected area
D、locate the problem area
答案
D
解析
第一段最后一句话中使用了“rather than”这个短语,表达的是让农场主可以准确地target。target在这里的意思是“锁定”,而locate表示的是“定位”,其意思一样。扫描的主要目的在于让人们对准目标喷洒农药,而不是下“满天雨”。
转载请注明原文地址:https://tihaiku.com/zcyy/2867701.html
相关试题推荐
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
随机试题
[originaltext]W:Hello.Isthistheregistrationoffice?M:Yes.ThisisHerber
下述人防防火分区划分中,()不准确。A.一般情况下,其不应大于500m2
A.虹膜状或靶形红斑 B.肢端硬性肿胀 C.蝶形红斑 D.环形红斑 E.
发展是解决我国一切问题的基础和关键,发展必须是科学发展,必须坚定不移贯彻____
《国家电网公司变电运维管理规定》各地市公司应将奖惩相关规定制度报本单位人力资源部
某办公楼地下2层,地上45层,建筑高度163米,建筑为玻璃幕墙结构,长100m,
能在紧急状态时统一意志、统一行动,迅速动员社会力量渡过难关的宏观调控手段是(
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
根据国家发改委《必须招标的工程项目规定》和《必须招标的寄出设施和公用事业项目范围
男性,52岁。有高血压病史,突然出现双下肢无力倒地,随即自行站起,整个过程中意识
最新回复
(
0
)