概述目前,国内生产的气吸式播种机工作时都是由高速风机产生负压,传给排种器的真空室。排种盘回转时,在真空室负压作用下吸附种子,并随排种盘一起转动,当排种盘转出真空室后,种子不再承受负压,就靠自重落在排种沟内。气吸式播种器主要影响因素有真空度、吸孔形状和种子尺寸等。尤其是真空度,当拖拉机到地头或地尾进行转弯作业时,由于机手需 Overview At present, the domestic production of air suction planter work are produced by the high-speed fan negative pressure, pass the vacuum chamber of the seeder. When the seed plate rotates, the seeds are adsorbed under negative pressure in the vacuum chamber and rotate together with the seed plate. After the seed plate is transferred out of the vacuum chamber, the seeds no longer bear the negative pressure and fall on the planting groove by their own weight . Air suction sowing main influencing factors are vacuum, suction hole shape and seed size. Especially the degree of vacuum, when the tractor to the ground or to the end of the turn when homework,