农业产业链是指以农业为依托，通过产业链条的延伸和整合，实现农业与第二、第三产业的融合，提高农业的综合效益和竞争力。

具体来说，农业产业链包括种子、种植、肥料、农药、农机、采摘、加工、运输、销售等多个环节，它涵盖了农业生产的全过程，将农业生产与深加工、销售等环节有机地结合在一起，形成了一个完整的产业系统。

在农业产业链中，各个环节之间相互关联、相互依存，形成了一个利益共同体。通过优化资源配置和产业结构，可以有效地提高农业生产的效率和效益，促进农民增收和农村经济发展。

此外，农业产业链还可以促进城乡一体化发展，推动农村产业升级和转型。通过将第二、第三产业引入农村，可以带动农村经济的发展，提高农民的收入和生活水平，促进城乡经济协调发展。

总的来说，农业产业链是现代农业发展的重要支撑和保障，是提高农业综合效益和竞争力的关键。在中国，随着农业供给侧结构性改革的深入推进，农业产业链的发展也将迎来更加广阔的空间和更加良好的机遇。

英文：

Agricultural industry chain refers to the integration and extension of agricultural production and related industries such as processing, logistics, and sales, aimed at improving the comprehensive benefits and competitiveness of agriculture.

Specifically, the agricultural industry chain includes many links such as seeds, planting, fertilizers, pesticides, agricultural machinery, picking, processing, transportation, and sales. It covers the entire process of agricultural production, organically combining agricultural production with deep processing and sales, forming a complete industrial system.

In the agricultural industry chain, each link is interrelated and interdependent, forming a benefits community. By optimizing resource allocation and industrial structure, the efficiency and benefits of agricultural production can be effectively improved, and farmers' incomes and rural economic development can be promoted.

In addition, the agricultural industry chain can also promote urban and rural integrated development, and promote the upgrading and transformation of rural industries. By introducing the secondary and tertiary industries into rural areas, the development of rural economy can be driven, farmers' incomes and living standards can be improved, and urban and rural economic development can be coordinated.

Overall, the agricultural industry chain is an important support and guarantee for the development of modern agriculture, and the key to improving the comprehensive benefits and competitiveness of agriculture. In China, with the deepening supply-side structural reform in agriculture, the development of agricultural industry chain will also usher in broader space and better opportunities.