| 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 A. sprayed with pesticides B. facing an infrared scanner C. in poor physical condition D. exposed to excessive sun rays 我来回答: 提交
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