水稻剑叶露尖是指水稻剑叶露出倒二叶叶枕的位置。现在大多数资料都提在水稻剑叶露尖时施保花肥。因此,在生产实践上判断出水稻剑卧是否露尖有非常重要的作用。怎样判断水稻剑叶露尖呢?笔者从事水稻菌情观察记载工作多年,对这个问题进行了探讨。通过对大量水稻品种的详细观察记载和大量剥检水稻植株,发现水稻剑叶即将露尖或刚露尖时, Rice flag leaf tip refers to the rice leaves out of the inverted two leaf pillow position. Now most of the information are mentioned in the rice leaf tip Shi Shi Paul fertilizer. Therefore, it is very important to judge whether the rice sword lies in the production practice. How to determine the rice leaf tip? The author engaged in rice etiquette observation records for many years, on this issue were discussed. Through a detailed observation of a large number of rice varieties recorded and a large number of stripping rice plants and found that the rice leaves will soon tip or just bare tip,