伴随着阵阵机械声，一排排玉米秸秆经粉碎均匀地洒向地面，给土壤披上了一层“外衣”。在９月２０日辽宁省农机局召开的玉米机械收获暨机械化保护性耕作现场会上，玉米联合收获、秸秆粉碎还田、机械联合整地等全程机械化作业让现场观看演示的农民啧啧称道。玉米的收获是玉米种 Accompanied by mechanical bursts of sound, rows of corn stalks crushed evenly onto the ground, giving the soil a layer of “coat.” On September 20, at the on-site meeting of corn machinery harvesting and mechanized conservation tillage held by Agricultural Machinery Bureau of Liaoning Province, the corn mechanization operations such as joint corn harvesting, straw crushing and soil re-planting, mechanical joint preparation and site preparation, etc., gave the scene to peasants who praised the demonstration. The harvest of corn is corn