Design and Test of 2BDG-2 Millet Seed Essence Small Amount Electric Seeder

In order to solve problems of large amount of seeding and large workload of seedling thinning in scattered small plots of Hilly and mountainous areas，the 2BDG-2 electric seeder with small amount of millet sperm was designed and manufactured according to requirement of small amount of millet sperm seeding.The seeder was mainly composed of electric drive system，power transmission system，inclined disc precise small amount of seeding device and other parts，which could complete ditching，precise small amount of seeding and covering at one time.Soil and repression and other sowing operations.According to national standard of grain sowing，the performance of seed metering device and uniformity of seeding machine were tested.Results of seed metering performance test showed that coefficient of variation of consistency of row displacement and stability of total displacement were not greater than 1.27% and rate of seed damage was less than 0.08% under different rotational speeds and theoretical hole spacing.Results of sowing uniformity test showed that qualified rate of hole spacing was not less than 86.81% under different operating speed and theoretical hole spacing，and variation coefficients of replaying rate，missing sowing rate and qualified hole spacing were not more than 7.40%，7.28% and 6.97% respectively.All parameters met requirements of national standards for grain sowing.This study can be used for small amount of millet sperm sowing in scattered plots in Hilly and mountainous areas.