农产品质量安全追溯是通过标识和查询农产品过程信息、落实农产品质量安全的重要手段。农产品质量安全追溯体系的建设，对于保障“从农田到餐桌”的食品安全和我国农业现代化都具有重要意义。为此，笔者以中宁县枸杞生产为案例，采用了空间分析、数据网格化、云计算、移动互联网等一系列技术和方法，构建了包括宽度、深度和精确度三个维度的食品可追溯体系，突破了定位与地图显示、数据网格化、预警服务与推送、二维码关联与追溯等多项关键技术，形成了能够覆盖农产品生产全流程的农产品质量安全追溯系统。在系统建设与应用示范过程中，该系统在农作物质量安全追溯上可以基本满足管理人员、生产人员和消费者的需求，在未来该系统可以应用到全部农产品的质量安全追溯体系中，可继续研究并建立国家层面统一的、标准化的追溯标准。

In recent years, consumers have expressed higher requirements on the source and quality of agricultural products; purchased agricultural products need more traceability and their nutritional value characteristics need to be understood. Taking the production of wolfberry in Zhongning County as an example, the authors use a series of techniques and methods in spatial analysis, data grid, cloud computing, and mobile Internet to implement across the three dimensions of width, depth, and accuracy of the food traceability system. Leveraging and improving on the key technologies of localization and map display, data grid, early warning service and push notifications, two-dimensional code association, and back-tracing, the authors form a quality and safety traceability system of agricultural products that covers the entire process of agricultural production. Through the process of system construction and application demonstration, the system is generally shown to meet the crop quality needs of producers, managers, and consumers. In future, this system may be expanded to the quality and safety traceability business of all agricultural products. Additionally, further study can facilitate the establishment of a unified traceability standard at the national level.