烈日当空,一台拖拉机在棉田間徐緩行駛,清除着杂草。但是,如果您走近一看,将会感到惊奇。它并没有拖挂鋤草机具,只有几个噴头,从中噴出一股熾热的火焰,扫过一行行棉株。轉眼間,棉株間嫩綠的杂草全部萎蔫枯死,而棉株却安然无恙。这就是現代用火焰来除草的方法之一。 In the hot sun, a tractor slowly moved between cotton fields to remove weeds. However, if you look closer, you will be surprised. It did not drag the rakes, but only a few nozzles, from which fired a fiery flame and swept across the line of cotton plants. In the twinkling of an eye, all the green weeds between the cotton plants wilted and died, while the cotton plants remained intact. This is one of the modern methods of using a fire for weeding.