The invention discloses a
microwave rotary
tiller for eliminating root-knot nematodes, which comprises a flat-plate frame. Travelling wheels are disposed at the front end of the frame. Rotary blades are connected to the middle of the bottom of the frame, a
microwave irradiation cavity is reserved around the rotary blades, the cross section of the
microwave irradiation cavity is semispherical and provided with a bottom opening, the
microwave irradiation cavity is connected with the frame, a plurality of microwave emitters are mounted on the outer front wall of the
microwave irradiation cavity,a plurality of first microwave emitters are evenly distributed on the
microwave irradiation cavity along the width direction, a plurality of second microwave emitters are mounted on the outer rear wall of the microwave
irradiation cavity, the second microwave emitters are evenly distributed and horizontally arranged on the microwave irradiation cavity in the width direction, the wall of the microwave irradiation cavity is provided with
microwave scattering through holes corresponding to the microwave emitters, vent holes are reserved on two sides of the upper portion of the microwave irradiation cavity and evenly distributed along the width direction of the microwave irradiation cavity, and the rotary blades are connected with a motor through a worm-and-gear and gears. The microwave rotary
tiller can be used for eliminating the root-knot nematodes in soil within 30cm in depth sequentially during rotary
tillage, and the
elimination rate reaches 100%.