目前与手扶拖拉机配套的前置式开沟机的广适性不足,所开沟的效果受土壤结构、气候条件及耕层状况影响较大。尤其在沙性土壤耕旋作业后进行开沟作业难度较大,不仅开沟效果差而且沟边堆置的积土较多,严重影响后茬作物的播种效果。通过增加沟型切刀、调整切刀夹角及附加排土装置,开沟效果明显得到改善,播种质量显著提高。 At present, front trenching machines, which are equipped with walking tractors, are not widely adaptable. The effect of ditching is greatly influenced by soil structure, climatic conditions and tillage conditions. In particular, it is more difficult to open a trenching operation after sandy soil is dredged. Not only the poor ditching effect but also the accumulation of ditches along the ditch will seriously affect the sowing effect of the following stubble crops. By increasing the ditch type cutter, adjusting the cutter angle and additional draining device, the ditching effect is obviously improved and the sowing quality is significantly improved.