... *700mmGross weight :220kg4.According the the planting habit of the onion users,they can adjust the sowing line ... according to the line),they can also adopt the method of come and go sowing the seeds,then can ... small sized seeds,low breakage rate,the volume of each seed box is 15kg,working efficiency 6- ... .Before sowing,we should adjust the pressure spring of the ditch opening device,make they have the ...