qualified seed spacing rate: maize 85.80%,
soybean 86.50%; multiples rate: maize 7.60%, soybean 7.85%; miss rate: maize 6.60%, soybean 5.63%; the coefficient of variation
of the spray capacity of the spray nozzles was 5.94% and the coefficient of variation of the total spray capacity 6.00%. All indexes of
the machine reached the requirements stipulated in the related national standards.