标记叶龄。是水稻科研中和指导生产时常需进行的一项重要工作。过去的方法是点红漆并挂牌(目前还有很多单位仍沿用此法)。近年来,有的人开始用号码印标记。据笔者几年来实际操作的体会,用号码印比用红漆标记确实具有快速准确简便易行的优点。但也有少数人用号码印标记后反映效果不理想。究其原因,主要是有些问题没有掌握好,在用号码印快速准确地标记水稻叶龄的具体做法上,笔者 Marked leaf age. It is an important task that often needs to be carried out in scientific research and guidance in rice production. The past method is a red paint and listing (there are still many units still use this method). In recent years, some people began to use numbers printed mark. According to the author’s practical experience over the past few years, with the number printed with red paint marking does have the advantages of fast and accurate easy to operate. However, there are also a few people with numbers printed on the mark to reflect the effect is not satisfactory. The reason is mainly that some of the problems are not well understood. In the specific practice of marking the leaf age of rice quickly and accurately with the number plate,