Automatic watering controller for transplanting tobacco seedlings

The utility model discloses an automatic watering controller for transplanting tobacco seedlings. The automatic watering controller for transplanting the tobacco seedlings comprises a water tank assembly, a water conveying tube, a water storing jug assembly, a three-way connecting body, a barrel body assembly and a control assembly. According to needed watering amount of each tobacco seedling, spacing between an upper clamping plate and a lower clamping plate is adjusted, volume of an elastic water storing jug is made to change, watering amount is convenient to control accurately. Due to design of an elastic barrel body and use of the spring, a connecting rod triggering rod is driven to poke a control connecting rod to pull or release a pulling rope through rotating of a round transplanting disk, then the spring and the elastic barrel body can be made to shrink or return to original shapes, opening and closing of a lower end opening of the three-way connecting body are achieved, and therefore watering and water storing are achieved. Through continuous rotating of the round transplanting disk, continuous watering and intermittent watering are achieved, the automatic watering controller for transplanting the tobacco seedlings is not only convenient to operate, but also accurate and reliable in watering position, watering is made to be in harmony with transplanting through automatic opening and closing of the watering action of a tobacco transplanting machine, and waste is avoided.