玉米全膜双垄沟电动式精量播种机设计与试验

Design and field trial of an electric corn precision seeder for whole film double furrow sowing

为满足旱地全膜双垄沟农艺技术要求,设计了一种玉米全膜双垄沟电动式精量播种机。以穴播轮容种高度、穴播轮转速、活动鸭嘴长度为因素,以空穴率和单粒率为指标进行了正交试验。再利用试验结果做出了方差分析,得出影响播种机工作性能的因素主次,进一步优化了组合部件参数。试验结果表明:容种高度为130 mm,穴播轮转速为0.85 m·s-1,活动鸭嘴长度为65 mm时,该播种机的平均空穴率为1.9%,平均单粒率为93.1%,播种效果良好,满足玉米精量播种的要求。

In order to meet the agronomic technical requirements of whole film double furrow sowing on dry-land ,an electric corn precision seeder was designed .An orthogonal test was conducted using height of the hill-drop wheel’s ca-pacity of seed ,speed of hill-drop wheel ,and length of flange as the parameters ,rate of no-seed holes and rate of single-seed as the indicators .Then the test results were used to do variance analyses ,concluding the factors influencing working performance of the electric corn precision seeder ,and optimizing further the parameters of components .The test results showed that when the height of hill-drop wheel’s capacity of seed was 130 mm ,the speed of hill-drop wheel was 0 .85 m·s^-1 ,and the length of flange was 65 mm ,the electric corn precision seeder ran well and could meet the agro-nomic requirement .