Sowing machine for distributing seeds on the ground, which is intended to be moved on the ground along an advancing direction (Y) and comprises: - a support frame ; - sowing means mounted on said support frame adapted to distribute a plurality of seeds (S) via gravity on the ground, and comprising a manifold susceptible of guiding the seeds (S) that fall towards the ground; - sensor means associated with said sowing means and adapted to detect the passage of the seeds (S) which are distributed on the ground; - mulching means , which comprise at least one reel wound with a cover cloth , and are mounted on said support frame downstream with respect to said sowing means , in the advancing direction (Y) of said sowing machine, in order to extend said cover cloth on the sown ground; - cutting means for cutting the cover cloth , mounted on said support frame downstream with respect to said mulching means , in the advancing direction (Y) of said sowing machine, and adapted to make a plurality of through openings in the cover cloth ; - a sensor for measuring speed , and for detecting the speed of the sowing machine; - a logic control unit operatively connected to said sensor means , to said sensor for measuring speed and to said cutting means ; wherein said cutting means are placed in proximity to the ground and are adapted to make the through openings on said cover cloth extended in abutment against the sown ground; said logic control unit being configured to detect the advancing speed (V) of said sowing machine by means of said speed measurement module , in order to detect the sowing moment for each seed (S) by means of said sensor means and in order to drive said cutting means to make said plurality of through openings in the areas of said cover cloth susceptible of being extended at the seeds (S). - a support frame ; - sowing means mounted on said support frame adapted to distribute a plurality of seeds (S) via gravity on the ground, and comprising a manifold susceptible of guiding the seeds (S) that fall towards the ground; - sensor means associated with said sowing means and adapted to detect the passage of the seeds (S) which are distributed on the ground; - mulching means , which comprise at least one reel wound with a cover cloth , and are mounted on said support frame downstream with respect to said sowing means , in the advancing direction (Y) of said sowing machine, in order to extend said cover cloth on the sown ground; - cutting means for cutting the cover cloth , mounted on said support frame downstream with respect to said mulching means , in the advancing direction (Y) of said sowing machine, and adapted to make a plurality of through openings in the cover cloth ; - a sensor for measuring speed , and for detecting the speed of the sowing machine; - a logic control unit operatively connected to said sensor means , to said sensor for measuring speed and to said cutting means ; said cutting means are placed in proximity to the ground and are adapted to make the through openings on said cover cloth extended in abutment against the sown ground; said logic control unit being configured to detect the advancing speed (V) of said sowing machine by means of said speed measurement module , in order to detect the sowing moment for each seed (S) by means of said sensor means and in order to drive said cutting means to make said plurality of through openings in the areas of said cover cloth susceptible of being extended at the seeds (S). <EOS>