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Greg Sword: Flying Drones And a Locust Plague In Australia

EarthSky

A team of scientists in Australia is developing aerial drones – small, unmanned aircraft – to track the movements of what’s expected to be an unusually large plague of?locusts?this year.

澳大利亞的一個(gè)科學(xué)家小組正在研制一種“空中雄蜂”——小型無人飛機(jī)，以便追蹤今年意料之中異常嚴(yán)重的蝗災(zāi)的足跡。

Greg Sword: One of the things that makes locusts a very important crop pest, is that they’re mobile and they travel in these groups in the ground and in the air as swarms.

Greg Sword：蝗蟲之所以成為一種算是關(guān)鍵的作物害蟲，是因?yàn)樗麄円苿?dòng)易變，并且能夠成群結(jié)隊(duì)地在空中與地面上活動(dòng)。

That’s Greg Sword of the University of Sydney. His team is using aerial drones designed to track tiny reflective pieces of glass that have been attached to the backs of individual locusts with a drop of glue. Sword’s team plans to create models of how the locusts move in groups.

我們采訪了悉尼大學(xué)的Greg Sword。他的小組使用的是“空中雄蜂”，追蹤蝗蟲個(gè)體后背上的一塊反射玻璃。這個(gè)玻璃是用一小滴膠水粘上去的。Sword的小組計(jì)劃建立蝗蟲怎樣成群移動(dòng)的模型。

Greg Sword: We’re developing mathematical models based on collective movement, what’s called collective movement dynamics, and we can predict where the locusts are going to go.

Greg Sword：我們正根據(jù)蝗蟲的集體運(yùn)動(dòng)（即集體運(yùn)動(dòng)動(dòng)力學(xué)）建立數(shù)學(xué)模型，以預(yù)測蝗蟲走向。

They plan to track newly-hatched locusts. Sword explained that juvenile locusts are easier to control. They don’t yet have wings, and travel on foot in what he calls “migratory bands,” eating grasses and crops as they go.

他們計(jì)劃追蹤新孵化的蝗蟲。它們還沒有翅膀，以一種Sword稱作“遷移帶”的方式步行移動(dòng)。邊走邊吃草和莊稼。

Greg Sword: If we can predict where these bands are going to travel, we can be much more precise in our application of pesticides to control them. We don’t have to blanket-spray.

Greg Sword：Greg Sword：如果我們能預(yù)測這些蝗蟲群的去向，我們便能在殺蟲劑的使用方面更加精確地控制它們，就不用地毯式噴射農(nóng)藥了。

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