同一种类的黄瓜种籽同时种在一块地上,长出来的芽却不一样。全苏肥料、农业和农业土壤科学研究所化验室主任巴尔苏柯夫这样解释道:“左边的黄瓜种籽在播种前活化了,右边的没有活化。活化的种籽出芽既早又齐。当然这些种籽结果实的日期也会提前。”种籽是用什么东西活化的呢?这种东西就是超声波。我们知道,各种形式的声音是不同程度的空气振动的结果。声音可以分两种:听得见的和听不见的。人的耳 The same kind of cucumber seeds are planted on the same ground at the same time, and the buds that grow out are not the same. “The cucumber seeds on the left are activated before sowing, and the right one is not activated. The buds of the activated seeds sprout early and are homogeneous. Of course,” explains Balthakov, director of the Institute of Soil and Fertillology of the National Institute of Fertility, Agriculture and Agriculture. The dates for these seeds to be fruited will also be advanced.” What kind of seed is activated? This kind of thing is ultrasound. We know that various forms of sound are the result of varying degrees of air vibration. There are two types of sound: audible and inaudible. Human ear