引进带有检疫病虫的植物是一种经常性的危险。通过采取一些适当的植物检疫措施,就可以减少这种危险,例如:在生长季节进行检验,出口前进行检验和进口检验,并辅之以必要的实验室检验。一般说来这些措施就可以给予在通常国际贸易中的植物货品一种合理的健康保证。但是,对有些植物货品,如种质和其他作繁殖用的材料,由于技术上的和实际上的 The introduction of plants with quarantine pests is a constant danger. Such risks can be reduced by adopting appropriate phytosanitary measures such as inspection during the growing season, inspection before export and import inspection, supplemented by the necessary laboratory tests. In general, these measures give a reasonable assurance of the health of plant products in the usual international trade. However, for some plant goods, such as germplasm and other propagating materials, due to technical and practical