Water and soil conservation device for afforestation

The utility model belongs to the technical field of afforestation devices, and particularly relates to a water and soil conservation device for afforestation, which comprises a first semicircular plate. An umbrella-shaped groove is formed in the top end of the first semicircular plate; an adjusting plate is slidably connected to the inner wall of the first semicircular plate, and the overlook surface of the adjusting plate is semicircular; an umbrella-shaped plate is fixedly connected to the outer side wall of the adjusting plate; the umbrella-shaped plate is connected into the umbrella-shaped groove in a sliding manner; a group of clamping holes are formed in the outer side wall of the umbrella-shaped plate; a threaded groove is formed in the outer side wall of the first semicircular plate and communicates with the umbrella-shaped groove. A threaded rod is in threaded connection with the interior of the threaded groove. A group of clamping blocks are fixedly connected to the outer side wall of the first semi