关键词: 棉花, 打顶, 顶端检测, 切割装置, 打顶控制

Abstract: As an important part in the cotton planting process, cotton topping has an important impact on cotton yield and quality. According to the development of cotton topping machinery in China, this paper classifies and summarizes the research status of key technologies such as cotton height and top detection, topping device and control system in recent years, and expounds the break through and innovation of various key technologies, at the same time, it points out the problems of insufficient detection accuracy, poor cutting reliability and accuracy and imperfect topping control algorithm in cotton height and top detection, topping device and control system, and puts forward the development direction of topping technology in the future. Neural network, 5G communication and other technologies can be used for cotton topping identification and innovate and optimize topping and cutting device, advanced intelligent control algorithm is applied to solve the problem of cotton topping control, and advanced technologies such as robots are applied to the topping.Unmanned aerial vehicle technology can be used for topping. The water and fertilizer regulation and cultivation technology promotes the combination of topping machinery and production agronomy, minimizes the complexity of cotton field management, improves the cotton topping effect, and realizes the largescale application of cotton machinery topping.

Key words: cotton, topping, top detection, topping device, topping control