针对现行玉米覆膜播种机因采用平直型种植垄面播种玉米造成幼苗的灼烧 ,及利用圆柱型垂直窝眼式圆盘排种器使种子破碎率高的问题 ,运用分析、试验的方法 ,提出玉米覆膜播种中以 W型种植垄面替代平直型种植垄面 ,及以 V形窝眼式圆盘排种器替代圆柱型垂直窝眼式圆盘排种器的改进措施 ,消除了烧苗现象 ,使种子破碎率降低到 0 .5 2 % ,穴粒数合格率提高到 98.95 % ,空穴率降为 1.0 4%。 Aiming at the problem that the current corn laminating machine sowing seedlings by sowing the corn with flat planted ridge and the seed crushing rate is high by using the cylindrical vertical sowing disc seed metering device, the method of analysis and experiment is adopted , Put forward the improvement measures of corn plank planting with W type planting ridge instead of flat planted ridge and V type nesting disc seed distributor instead of cylindrical vertical nest type disc seed metering device, The phenomenon of burning seedlings, the seed crushing rate reduced to 0.52%, the number of hole particles passing rate increased to 98.95%, the hole rate dropped 1.04%.