针对使用搅刀－拨轮式排肥器的悬挂施肥播种机在施尿素等颗粒状肥料时，非工作状态所发生的肥料严重漏失问题，研究设计了阻止漏肥装置。试验结果表明，该装置利用播种机被提升和落下动作即能自动控制挡肥活门启闭，不增加拖拉机驾驶员的操作负担，能有效解决上述排肥器的漏肥问题。 In view of the problem of serious leakage of fertilizer which occurs in the non-working state when the suspended fertilizer seeder using a stirrer-toggle wheel type fertilizer extractor is applying granular fertilizer such as urea, the device for preventing leakage of fat is studied and designed. The test results show that the device can automatically control the opening and closing of the fertilizer gate by using the sowing machine to be lifted and dropped, without increasing the operation load of the tractor driver, and can effectively solve the problem of fertilizer leakage of the fertilizer distributor.