The utility model discloses a conveniently make statistics of multi -functional auxiliary machine of flue -cured tobacco land for growing field crops management that producing region flue -cured tobacco planted quantity, it includes the backpack water tank, be equipped with the battery on the backpack water tank, switch and water pump, be connected with the water delivery hose on the water delivery side of pump, be connected with handheld handle on the water delivery hose, the device is applyed to the crop root liquid that is equipped with the change at the tip of handheld handle or the device is applyed to stem of plant leaf portion liquid, handing zone at handheld handle is equipped with the switch, be connected with the controller of taking the tally function on the water pump, end connection at handheld handle has automatically controlled valve and water flow sensor, it is still including the controller of taking the tally function, the switch, automatically controlled valve and water flow sensor all are connected with the controller, be connected with the memory on the controller, it derives the mouth to be connected with wireless data conveyer or to be equipped with data on the memory. The utility model discloses can practice thrift cost input by a wide margin, reduce farmer's burdens, improve peasant field management work efficiency.