摘要：　种子是种子植物特有的器官。世界上有26万多种种子植物,中国约有3万多种。许多种子都有一些适应传播的机制与环境及动物相互配合,使种子得以传播，来适应不同的环境和繁衍后代。种子的生产、储运等环节中难免有一些病原物伴随种子存在，从这个角度看，种子又成了传播植物病原物的重要途径之一，因此，采取必要的手段防治种子传播中可能出现的病害也是相当重要的。
关键词：种子，传播，病害，防治。

Abstract: The seed is the specific organ of spermatophyte. There are more than 260,000 kinds of seed plants in the world, and nearly 30,000 kinds of them in china. Some mechanism and environment exists in the seeds to make them to adapt to disperse, likewise animals interwork with each other can help seeds disperse.And they can adjust themselves to different environments and generate progeny. In the course of seeds ‘production, storage and transportation, it is inevitable that some pathogens associated with seeds exist. From this point of view, the dissemination of seeds becomes one of important ways to disperse plant pathogens. Therefore, it is important to take necessary means to control the probable plant diseases in the course of seeds dissemination.

Key words: seed, dissemination, plant disease, prevention and treatment