Mechanical field sowing method for stevia rebaudiana

The invention discloses a field sowing method for stevia rebaudiana. The method comprises the following steps of: sowing seeds in grooves with width of 8 centimeters and depth of 5 centimeters, arranging a drip irrigation zone between two grooves, and covering a film to form a ground groove-type small arch shed. By the method, the field direct-sowing problem of the stevia rebaudiana is solved, the greenhouse effect of the arch shed provides temperature condition for seed germination in early spring, moisture and humidity are adjusted by drip irrigation, and germination of the stevia rebaudiana seeds is ensured; the film is duly broken to release seedlings, so that the traditional mode of seedling culture and transplanting of the stevia rebaudiana is broken, and about 150 thousand seedlings are ensured; by using the mulching film and the drip irrigation zones, cost and manpower for water mixed manure supply and weed control in later growth of the stevia rebaudiana are reduced; and the method has wide applicati