GB/T 23633-2009

This standard provides a systematic framework for assessing the potential risks posed by plant viruses and viroids to agricultural ecosystems. It is applied by plant quarantine authorities, agricultural researchers, and risk management professionals to evaluate the likelihood of introduction, establishment, and spread of these pathogens, particularly in the context of international trade of plant materials and domestic crop protection. The guideline supports decision-making for phytosanitary measures and regulatory controls to prevent economic and ecological damage.