Abstract:Rapeseed is an important oil plant in China. Precision seeding technology is an important method to decrease the costs and increase the efficiency of mechanical and scale operation for rapeseed and is also the important and difficult research point for rapeseed full mechanization. The planting status and main seeding equipments of rapeseed at home and abroad were concluded. The research status and development tendency for the key seeding technologies including precision seeding, seedbed preparation and intelligent seeding, were analyzed. Precision seeding technology, as the basic and key aspect for precision seeding, included one-row and centralized seeding technologies, according to different structure and principle of seeding device. The factor to affect the stability of seeding depth and furrow depth for rapeseed planting and the method to ensure the seeding depth, furrow depth and seedbed surface flatness were studied. The intelligent technologies for rapeseed sowing were consisted of technology of loss sowing detection and variable reseeding, automatic navigation and variable sowing. Moreover, the conclusion and prospection for the planting characteristics and development trend were provided from following three aspects: firstly, the precision seeding technology had the performance with high speed, wide work breadth, high efficiency and precision seeding; secondly, the technology to control the seeding depth, the tillage technology to reduce resistance and adherence were the research focus for improving rapeseed seedling rate and protecting seedlings from waterlogging; thirdly, combined agricultural machinery, agronomy and information technology is benefit to population structure and yield. Technologies of loss sowing detection and variable reseeding, automatic navigation and variable sowing promote the intelligent level of rapeseed planter and improve the intelligent development for rapeseed sowing.
