JD.com's cold chain logistics organization and operation can be improved in the following ways:

1. Establish a sound information system: strengthen the collection and management of cold chain logistics information, realize full-process visualization and real-time monitoring, and improve transportation efficiency and service quality.

2. Establish cold chain logistics centers: increase the number and scale of cold chain logistics centers, provide better cold chain facilities and storage capabilities, and ensure the safety and preservation of goods.

3. Introduce intelligent technologies: such as the Internet of Things and artificial intelligence, to achieve automation and intelligence in logistics links, improve operational efficiency and reduce human errors.

4. Strengthen cooperation with suppliers: cooperate with agricultural product suppliers, etc., establish long-term and stable cooperative relationships, plan distribution plans in advance, and reduce the detention time of goods.

5. Optimize transportation routes: select the best transportation route through data analysis and optimization algorithms to reduce transportation time and cost.

Through the above improvement measures, JD.com's cold chain logistics organization and operation can improve transportation efficiency, ensure the quality and safety of goods, and provide better services to consumers.