Abstract: In the light of a series of short comings of the rice seedling tossing transplant by manual labour as well as machines,the aerodynamical tossing principle was employed at first time.

• 中文摘要: 在对国内外水稻钵苗移植机械综合分析的基础上提出了气力抛秧的原理，并进行了方案设计和研究。结果表明，气力抛秧原理是可行的，能有效地解决目前机械抛秧存在的问题。