Fecha de publicación: 29/03/2017 Fuente: Wipo "precision agriculture" The utility model discloses an accurate fertilization automatic control system based on big dipper satellite includes big dipper module of satellite position, controlling means and hand -held type soil information collection system, and when coming into operation in this system, big dipper module of satellite position advances line location to the farmland position that the fertilizer distributor was located, and the location information transmission give controlling means, and controlling means checks the number according to the controlling means 0 that inside prestored, rotates according to the fertile axle of predetermined rate of fertilizer application control row and fertilizies. Among the fertilizer application process, controlling means adjusts the rate of fertilizer application through the rotational speed of wheel, simultaneously controlling means's time block starts regularly, regularly the time go to obtain a big dipper module of satellite position's locating information after to again, the messenger system is according to actual present position, the adjustment rate of fertilizer application has further reached the purpose of accurate fertilization. This system is before the operation, and still usable hand -held type soil information collection system acquires the actual information of treating operation soil, goes to revise the rate of fertilizer application of controlling means output, reaches the purpose of accurate fertilization.