水平拨草轮式玉米免耕播种机设计和试验

设计了水平拨草轮式玉米免耕播种机，确定了拨草轮、开沟器和播种覆土装置等部件的主要结构参数。田间试验表明，采用动力水平拨草轮和刀刃型开沟器相结合的防堵原理，能够有效清除秸秆、杂草，保证机具通过性能。与条带旋耕式玉米免耕播种机相比，在满足种肥深度要求下，土壤扰动量减小了69.7%，单位油耗减小了19.3%，较好地满足了农艺要求。

Design and Experiment on No-till Planter in Horizontal Residue-throwing Finger-wheel Type for Maize

The no till planter in horizontal residue throwing finger wheel type for maize was designed. The residue throwing finger wheel, furrow opener, seeding and covering device were mainly analyzed. Furthermore, the key parameters were analyzed and determined. The field experiment showed that, though adopting the anti-blocking principle that combined horizontal residue throwing finger wheel device with residue cutting by knife type opener, the machine could solve the residue and weed blocking effectively and show a good performance of passing and cutting stubble. Compared with strip rotating maize no tillage planter, the maize no till planter could not only seed and fertilize at the suitable depths, but also decrease soil disturbance and fuel consumption by 69.7% and 19.3%, respectively. It indicated that this new planter could meet the requirements of agronomy.