中文摘要：

在分析国内外水稻秧盘育秧播种流水线特点的基础上，针对播种器容易伤芽、没有除杂环节、整机操作劳动强度大等不足之处，研制了2CYL-450犁水稻秧盘育秧播种流水线；介绍了该流水线的组成、工作原理、主要技术参数及结构特点。设计的播种器由勺式槽轮将种子从种箱中播出，落于筛分板上，经振动筛分、除杂后进入到与其安装为一体的V形槽板上，沿V形槽板有序排队，最后经出口播出。设计的双层秧舷供送装置，通过光电传感器与供送装置实现了依次定位输送秧盘。整个流水线结构简单、操作简便、播种精度好、生产效率高。

英文摘要：

After reviewing the characteristics of rice seeding for nursing seedlings pipeline at home and developed rice seeding for nursing seedlings pipeline of 2CYL -450 type to solve the shortage of seeder abroad, the study damaging bud and no impurities out and the heavy labor to operate whole machine et. , and introduced the components, principle, main technique parameters and structure character of the whole pipeline. The external force feed of designed seeder can supply with rations from seeds in box, seeds fell on sifter board and went into the V shape slot fixed on sifter board after vibration and cleaning impurities out, thus seeds flowed in sequence along the the slot. The designed two - layer tray transport mechanism implemented tray supply in turn with photo- electricity control method. The whole pipeline has simple structure, facile operation and high efficiency.