怎样获得葱白较长的大葱大葱的葱白是大葱的入土部分，也称假茎，是人们最喜欢食用的部分。葱白的长短，主要取决于遗传特性，即品种特性。因此，要想获得葱白较长的大葱，首先必须选择葱白较长的大葱品种，如海洋葱，章丘大葱。其次，栽培技术对葱白的长短也起着重要作用... How to get a long green onion Scallion green onion is white onion parts, also known as false stems, is one of the most favorite part of the human consumption. The length of the light blue, mainly depends on the genetic characteristics, namely, variety characteristics. Therefore, in order to obtain the scallion longer green onions, you must first choose the scallion longer green onions, such as sea onion, Zhangqiu green onions. Second, cultivation techniques also play an important role in the length of the scallion.