Agricultural engineering and information technology are both fields related to agriculture, but they are not agricultural extension per se. Agricultural extension refers to activities that promote the widespread use and adoption of agricultural technology and knowledge among farmers. It aims to improve the efficiency of agricultural production and promote sustainable agricultural development by providing farmers with effective agricultural technology and information. Agricultural engineering and information technology, on the other hand, are specific technological tools and methods involved in agricultural extension.

Agricultural engineering involves the application of engineering technologies in agricultural production, such as land use planning, design of irrigation and drainage systems, and research and development of agricultural implements and equipment, aiming to improve the efficiency and quality of agricultural production. The application of information technology in agriculture is also becoming increasingly important, including agricultural information systems, remote monitoring technologies, and agricultural big data analytics, which can provide farmers with accurate agricultural information and decision support.

Agricultural engineering and information technology are therefore important components of agricultural extension that help farmers improve agricultural production methods and promote sustainable agricultural development by providing effective technical and information support.