韭菜籽的使用年限一般只有一年，超过年限后的种子发芽率很低，即使能出苗生长也不正常，那么购买韭菜种时怎样才能鉴别出它的新陈呢？ 一、目视法 首先看种皮。如颜色发亮一般为新籽；颜色发暗为陈籽。其次看脐部的痕迹，白色的为新籽，黄色的为陈籽。 二、手插法 将手插到种 Leek seed use life is generally only one year, beyond the age of the seed germination rate is very low, even if the seedling growth is not normal, then the purchase of chives species how to identify its new? First, visual method First look at the seed coat. Such as the color of the new seed is generally shiny; dark hair Chen seed. Followed by the traces of the umbilical cord, white for the new seeds, yellow for Chen seed. Second, the hand inserted into the hand inserted species