多年来,大豆田缺苗断垄及幼苗羸弱已成为大豆生产上的一大顽疾,严重制约着大豆产业的良性发展。大豆播种质量的好坏、出苗率的高低,是能否实现大豆丰产的重要基础,直接影响到大豆的产量及效益,因此,力争一次性播种保全苗,是大豆丰产的重要保证~[1]。 Over the years, the shortage of seedlings in the soybean fields and the weakness of seedlings have become a major problem in soybean production, which seriously restricts the sound development of the soybean industry. Soybean sowing quality is good or bad, the level of emergence is an important basis for the ability to achieve high yield of soybean and directly affects the output and benefit of soybean. Therefore, striving to sow seedlings in one time is an important guarantee for soybean yield [1] .