Multiensor information fusion technique is a comprehensive treatment system of information developed from 1980. It is being applied to a wide variety of fields and brings all potentialities into fully play. This paper introduces the basic principles and methods of multisensor information fusion techniques, and summarizes its applications and development on the intelligent manufacture and measuring system, industrial control, robotics, intelligent communication, remote sensing and agricultural engineering, etc., especially in agricultural engineering. It will be applied to intelligent measurement and control system, production process monitoring, precision agriculture, agricultural resource and environmental monitoring. It will be widely applied to promote an integration of information, communication, global knowledge economy and agriculture.