在经验交流或技术总结的文章中,以及在参观学习、走访介绍中,常常听到和看到几个容易混淆的技术上的术语,需要澄清,以免造成技术实施上的混乱和失误。一、关于早、中、晚稻的划分。早、中、晚稻是水稻生态分类时常用的术语。早稻通常指感光性弱的早熟种,这一类品种对光照不太敏感,晚稻是指感光性强的品种,二者是对光照反应不同的季节生态类型。可是有的人常把早播早插的水稻称“早稻”,把晚播晚插的水稻称“晚稻”,而将只种一季的通称为一季“中稻”。然而一般早播的水稻往往多属晚熟品种,晚播的水稻又多属早熟 In the exchange of experience or technical summary of the article, as well as in the study tour, visit presentation, often heard and saw several confusing technical terms, need to be clarified, so as to avoid confusion and mistakes in the implementation of the technology. First, on the early, middle and late rice division. Early, middle and late rice is a term commonly used in ecological classification of rice. Early rice usually refers to the weedy precocious species, which are not sensitive to light. Late rice is a highly sensitive variety, both of which respond differently to the light of seasonal ecotypes. However, some people often refer to the early sowing of early rice as “early rice”, late late sowing of rice called “late rice”, and will only be a quarter of the commonly known as a season of “rice.” However, generally early sowing of rice are mostly late-maturing varieties, late-sowing of rice are mostly premature