水稻旱育秧是近几年在我省推广的一项新的农业增产措施，取得了较好的经济效益，为我省粮食生产再上新台阶作出了贡献。但是局部地方秧苗出现了缺素症状，严重影响了秧苗质量。 　　一、缺素原因及症状 　　针对旱育秧出现以白苗黄化为主要特征的缺素症状，通过调查研究和肥效 Rice dry nursery seedlings is a new measure for increasing agricultural output in our province in recent years, and has achieved good economic benefits and contributed to a new level of grain production in our province. However, local local seedlings appeared in the symptoms of deficiency, seriously affecting the quality of seedlings. First, the causes and symptoms of deficiency For nursery seedlings emergence of white rice yellowing as the main characteristics of the lack of symptoms, through the investigation and fertilizer