Micro drop irrigation head device for water stored in cistern

The utility model relates to a water-saving irrigation device, in particular to a micro drop irrigation head device for water stored in a cistern. The device comprises the cistern, a water pump for pumping water in the cistern and a micro drop irrigation pipeline connected with the water outlet of the water pump, and is characterized in that a filter device and a storage tank used for holding water fertilizer or pesticide are mounted on the micro drop irrigation pipeline connected with the water outlet of the water pump, and the storage tank is connected with the micro drop irrigation pipeline through a connecting pipe and a valve. The device has the characteristics that the cistern in a cistern project which is implemented in the last few years is utilized, meanwhile, a device for applying fertilizer or pesticide is added on a water-saving irrigation pipeline, so that on one hand, according to different fertilizer requirements in different growing period of a plant, the corresponding operation of applying fe