１２美国科学家经过３年的试验发现 ,如果每天能恰到好处地对农作物施放噪声 ,那么作物的根、茎、叶受到噪声刺激后 ,表面的气孔会明显地张大 ,从而增强对肥料和养分的吸收能力。科学家拿实验地里的一株西红柿作试验 :在其生长过程中３０次给予１００ｄＢ尖锐汽笛声的刺激 ,到 12 After three years of experiments, American scientists found that if the crop can be noisy just right every day, the surface stomata will be significantly enlarged after being stimulated by the noise of the roots, stems and leaves of the crops, thereby enhancing the absorption of fertilizers and nutrients . Scientists experiment with a tomato in an experimental field: stimulating a 100 dB sharp whistle 30 times during its growth to