关键词: 玉米, 变量播种, 变量施肥, 处方图

Abstract: Variable seeding technology can adjust crop seeding rates according to the  differences  of farmland soil, environment, climate and  other factors, so as to achieve precise and reasonable matching between crop growth conditions and seeding rates. With the widespread application of precision seeding technology for corn and the further development of precision agriculture, variable seeding has become an innovation in the field of precision seeding technology in recent years. This provides a new development space for making full use of Chinas limited land resources, maximizing the potential for increasing production, and maximizing cost savings and efficiency as much as possible. The research on variable seeding technology in China started relatively late compared to the developed countries and is still in the exploratory and experimental stage. This article reviews the current research status of the driving system, control system, and information decisionmaking system of corn variable seeding technology, and elaborates on the seeding quantity adjustment characteristics of different driving systems and their related research and application status. The progress of control systems and information decisionmaking in operation  monitoring, variable seeding, variable replanting, and prescription graphs is analyzed in detail. It is proposed that there are problems with the current soil realtime detection technology being immature, inaccurate variable sowing positions, and low speeds of replanting operations. At the same time, the development prospects and trends of corn variable sowing technology in our country are discussed, and it is pointed out the future development direction of corn variable sowing technology includes rapid detection technology of soil nutrients in fields, precision sowing units with high seed quality and response speed, efficient variable replanting technology, etc.

Key words: corn, variable rate seeding； variable rate fertilization； prescription map