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(一) 种子在国际、国内地区间交流、调运,是使一个国家、地区的作物及其遗传基础多样化的一种手段,是发展农林业生产的重要措施。好的种子,必须种性优良、品质好,健康即本身不患病、不为虫害,而且不携带危险性病菌、害虫和杂草。从植物检疫的观点看,种子最危险,植物疫病、害虫、杂草的远距离传播,几乎都是通过调运种子传播的,因此,种子植物疫病传播距离实际上是无止境的。
(1) The exchange and transfer of seeds between the international and domestic regions is a means of diversifying the crops and their genetic basis in a country or region, and is an important measure for the development of agriculture and forestry production. Good seeds, must be good species, good quality, health that is not sick in itself, not pests, and do not carry dangerous germs, pests and weeds. From the phytosanitary point of view, the most dangerous seeds, plant diseases, pests, weeds spread long distances, almost all through the deployment of seeds to spread, therefore, the distance between the spread of seed plants epidemic is virtually endless.