该机利用风机使播种机靠负压吸种，播种盘转出负氏度负压解除后．种子靠自重落入种麻。优点：省种（每亩可省l－2．3公斤）；可催芽播种；不破坏种衣剂；伤种率为零；由于落点均匀，一深浅一致，出苗整齐，通风光照良好，肥力利用充分，可增产15％一20％。更换不同孔数、孔径的 This machine uses the blower to make sowing machines to absorb negative pressure, and the sowing tray turns out negative degree negative pressure to relieve. Seeds by weight fall into the seed. Advantages: provincial species (per acre can save l-2.3 kg); can sow germination sowing; does not destroy the seed coating; injury rate is zero; due to the landing uniform, a uniform depth, emergence of neat, well-ventilated lighting, fertility With full use, can increase 15% to 20%. Change the number of different holes, aperture