| The present collector for residual plastic film can only be used on farmland with flat and loose surface soil or shallow layer without other materials in northern China. In the terrain and soil in southern China, the residual plastic film is mainly in the top 0~30 cm layer. So, we designed a new collector that can pick up all kinds of residual plastic film in the field. The machine weighs 600 kg with a dimension of 2.5 m×2.0 m×1.7 m. It is towed by a 36.75 kW tractor. It has a 1.1 m operation width and 40 cm work depth. It can pick up more than 80% small film pieces and more than 90% large film. The collection efficiency is about 420 m2·h-1. At this moment, it has been used for 141 hm2 farmland. |