【摘要】 针对免耕条件下残茬覆盖的作业地表平整度较差、耕地土壤质地多样化等因素所造成的播深不稳定，需进行实时播深监测的问题。采用拉线式位移传感器检测仿行轮与机架间相对位移来获取播种深度的方法，来解决播深监测难以及检测即时性的问题。设计并研制了玉米免耕播种机播深实时监测系统。根据免耕作业的农艺要求，在大庆市大同区和平牧场地区开展试验研究，经过三次播种试验验证，该系统有效率在75%以上，系统的优点是结构简单、易于安装与维护，可将播深数据传送至作业机车主控机进行实时显示，对开展保护性耕作有着良好的促进作用。更多还原

【Abstract】 In view of the instability of sowing depth caused by poor surface roughness and diversified soil texture of stubble mulching under no tillage,it was necessary to monitor the sowing depth in real time. In order to solve the problem of difficulty in monitoring sowing depth and instantaneity of detection,the wire displacement sensor was used to detect the relative displacement between the imitation wheel and the frame to obtain the sowing depth. The real-time monitoring system of sowing depth was designed and developed. According to the agronomic requirements of no tillage operation,the experimental research was carried out in Heping ranch area of Datong district,Daqing city. After three times of sowing experiments,the efficiency of the system was 75% and the advantages of the system were simple structure,easy installation and maintenance,and the sowing depth data could be transmitted to the main control computer of the operation locomotive for real-time display,which had a good role in promoting the development of conservation tillage.更多还原