Abstract:

In order to adapt to the mechanization of rice straw returning to field operations in cold area of northeast, burying device be consisted of returning machete with high straw sliding the drag reduction characteristics and the straw evenly and applied into the stalk rot agent straw carding\|rot agent applying device was designed. Using the orthogonal rotation design method to design the experiment scheme, the influence of the forward speed of the machine, cutter roller speed, returning the depth  on the traction resistance were detected, and then a traction resistance model was built. The machine had the optimal combination parameters when the machine forward speed was 1.4 km/h, the cutter roller speed was 210 r/min and returning depth was 10 cm. The affecting resistance of factors order were cutter roller speed >the machine forward speed> returning depth.

Key words: agricultural machinery, returning machine, rice straw, decomposition, traction resistance, experiment

摘要：

为适应东北高寒地区水稻秸秆的机械化还田作业，降低还田作业的牵引阻力、加快秸秆的腐解，设计了具有滑切减阻特性的还田弯刀组成的高秆翻埋装置和使秸秆均匀平铺同时施入秸秆腐解剂的秸秆梳理-腐解剂施入装置。采用旋转正交设计方法设计试验方案，考察机器前进速度、刀辊转速、还田深度三个因素对牵引阻力的影响，建立牵引阻力模型，得到牵引阻力最优的参数组合：机器前进速度为1.4 m/s，刀滚转速210 r/min，还田深度为10 cm。影响阻力的因素主次顺序为：刀辊转速>机器前进速度>还田深度。

关键词: 农业机械；还田机；水稻秸秆；腐解；牵引阻力；试验