Root-knot nematode single oocyst hatching and collecting device

The utility model discloses a root-knot nematode single oocyst hatching and collecting device which comprises a collecting cylinder, a groove is formed in the upper portion of the collecting cylinder, a cover plate is in lap joint with the interior of the groove, guide rods are symmetrically and movably connected to the two sides of the cover plate, a supporting ring is fixedly connected between the bottoms of the two guide rods, and an egg storage net is fixedly connected to the interior of the supporting ring. Sliding grooves are symmetrically formed in the front side and the rear side of the inner wall of the collecting barrel, sliding rods are slidably connected into the sliding grooves, a sealing ring is fixedly connected between the bottoms of the two sliding rods, and a larva collecting net is fixedly connected to the middle of the sealing ring. By placing egg sacs on the egg storage net, the supporting ring floats on the surface of purified water in the collecting barrel, when the water level drops, t