The present situation and existed problems of the straw-soil returning
machine are analyzed in this paper. On the basis of lucubrate on the
correlation theory, a new type straw-soil returning machine ---Double
rollers rotary cultivation machine for straw-soil retuming is designed and
trial-produced. Tests prove that the machine can accomplish several
working procedtlres on-off and the effect can meet agricultural demands.
It has extensive pot...