The invention discloses a method for controlling a
chassis of a full-hydraulic drive high-speed rice transplanter; when actual traveling speed is less than A, a traveling variable motor is controlledto reach
maximum displacement; when the actual traveling speed is greater than or equal to A, a
plunger pump is controlled to reach
maximum displacement; when overspeed is detected, the traveling variable motor that is under overspeed is controlled to reach zero displacement; when a
seedling box is inclined, the
seedling box reaches a horizontal state by controlling a profiling balance control valve; when grounding pressure of a
seedling box floating plate is too high or too low, the grounding pressure of the seedling box floating plate is controlled to reach a set value through a seedling boxlifting control valve; when a
steering wheel exceeds a set angle, the seedling box rises to the highest position; when in-situ debugging is carried out, a left
reversing valve is controlled to be electrified; during non-operation transition, a right
reversing valve is electrified; when normal traveling
transplanting operation is carried out, the left
reversing valve and the right reversing valveare not electrified; during idling, both the left reversing valve and the right reversing valve are electrified; and when
plant spacing is adjusted to be smaller or larger, a rice
transplanting motoris controlled to reach a larger or smaller displacement. The method can effectively improve the operation flexibility and reliability of the transplanter.