What are the common types of corn seeders?

According to different types and methods, seeders can be divided into the following types: (1) According to sowing methods, seeders can be divided into drill, drill, point (hole) seeder and precision seeder. (2) According to the operation mode, it can be divided into rotary seeder, fertilizing seeder, no-tillage seeder and film-laying seeder. (3) According to the connection mode with tractor, it can be divided into traction seeder, suspension seeder and semi-suspension seeder. (4) According to the principle of seed metering, it can be divided into mechanical, pneumatic, centrifugal, spoon-wheel and finger-clamp seed metering devices.