音乐在农业中的妙用保护鱼群日本制造一种长４米，装有录音机和放音器的塑料鲸鱼，把它放在海里，让它不时发出鲸鱼进攻时的怒吼声，把海豚吓得逃之夭夭。不仅保护了鱼群，也使海豚免遭捕杀。驱赶害鸟国外声学家先把捕获的糟踏庄稼的鸟，用刺激和吓唬的办法，使它们发出惨... Magical protection of music in agriculture Preserves fish stocks In Japan, a 4-meter-long plastic whale equipped with tape recorders and microphones is placed in the sea to make it from time to time the roar of whales attacking, scaring the dolphins away . Not only protects the fish, but also keeps dolphins from being killed. Expel the evil birds Foreign acousticians first capture the bad crops riding birds, with stimulating and frightening ways to make them send miserable ...