Improved substrate cultivation planting groove

The utility model relates to an improved substrate cultivation planting groove which comprises a substrate and further comprises a trapezoidal groove and a vent pipe arranged in the trapezoidal groove. The ventilation pipe is shorter than the trapezoid-shaped groove, and the trapezoid-shaped groove is filled with a matrix. The ventilation pipe comprises a pipe opening and a pipe body, a plurality of ventilation holes are evenly formed in the portion, more than one half, of the pipe body, and the surfaces of the pipe opening and the pipe body are wrapped with insect-proof nets. The ventilation and heat preservation effects are achieved by arranging the ventilation pipe, outside cold air firstly passes through the substrate layer and then enters the ventilation pipe from the pipe opening before entering the crop root system, the cold air reaches the root system through the ventilation holes after being buffered in the pipe, and due to the fact that the ventilation pipe serves as a buffering space, the temperatu