用机械与生物法消灭害虫比用化学农药灭虫更有效美国加州一家农产公司发明一个巨大的臭虫吸尘器，同一时间可以滚动一条管道，当昆虫被吸入后，会被碾碎；然后变成肥料再施在植物耕地上，这种方法减轻了公司依赖杀虫药来控制作物害虫。纽约的农民利用火焰来灭虫，他们在拖... Elimination of pests by mechanical and biological methods is more effective than chemical pesticides. One California-based agricultural company invented a huge bug cleaner that can roll a pipe at a time and, when the insects are inhaled, are crushed and then turned into fertilizers Re-applied to plantations, this approach alleviates the company’s reliance on pesticides to control crop pests. New York farmers use fire to exterminate insects, they are dragging ...