主要作物Key Crops
玉米 / 大豆 / 小麦 / 棉花 / 果蔬Corn / Soy / Wheat / Cotton / F&V
全球最大农药市场之一，法规体系成熟One of the world's largest pesticide markets with a mature regime
市场规模、主要作物与农业结构Market scale, key crops and farm structure
美国农业高度机械化、规模化，玉米、大豆、小麦、棉花与多种果蔬广泛种植。各州气候差异巨大，从中西部大平原到加州地中海农业带，形成多元的作物保护与登记需求。U.S. agriculture is highly mechanized and large-scale, with corn, soybeans, wheat, cotton and diverse fruit & vegetables. Vast climatic variation — from the Midwest plains to California's Mediterranean belt — creates varied crop-protection and registration needs.
主管机构、登记制度与市场Authority, registration system and market
农药登记由美国环保署（EPA）依据《联邦杀虫剂、杀菌剂与杀鼠剂法》（FIFRA）管理；各州可有附加要求。Registration is managed by the U.S. EPA under FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act); states may add requirements.
登记类型包括新有效成分（§3）、终端制剂、等同登记（Me-too）与进口容许量（Import Tolerance）；需全套 GLP 数据。Paths include new active ingredient (§3), end-use product, me-too (equal product) and import tolerance; full GLP data required.
全球最大的农药市场之一，门槛高、数据要求严。One of the world's largest markets with high bars and strict data needs.
取得美国登记的一般门槛（初稿，供参考）：General thresholds for a U.S. registration (draft, for reference):
美国境内公司或授权登记持有/代理人。A U.S. entity or authorized holder/agent.
毒理、生态毒理、残留、环境归趋与暴露数据。Toxicology, ecotoxicology, residue, fate and exposure data.
新成分 / 制剂 / Me-too / 进口容许量，路径不同。New AI / formulation / me-too / import tolerance — different paths.
如销售至各州，满足州登记与标签要求。If sold per state, meet state registration and label rules.
典型登记周期（仅供参考）：Typical timeline (indicative):
GLP 试验与卷宗撰写（新成分更久）。GLP studies and dossier authoring (longer for new AI).
技术评审、风险评估与补正。Technical review, risk assessment and deficiencies.
颁发登记证，办理州级（如需）。Certificate issued; state filing if needed.
该国本地办公室与对接人Local office and point of contact for this market