Ship-loaded automatic mixing and underwater scattering agent and fertilizer applying method

The embodiment of the invention discloses a ship-loaded automatic mixing and underwater scattering agent and a fertilizer applying method. A fertilizer applying device comprises an agent adding ship,an agent box, a control valve, an agent guide pipe, a propeller and an agent conveying opening. The agent box is installed on the agent adding ship. The agent guide pipe is installed at the tail of the agent adding ship. The control valve is directly installed on the agent box and the agent guide pipe. The agent conveying opening is formed in the center in the working area of the propeller. The propeller is installed at the tail of the agent adding ship. An agent makes direct contact with a water body, the spreading of the agent in air is reduced, the construction environment is improved, agent waste is relieved, the agent efficiency is improved, and the agent loss amount is reduced. 本发明实施例公开了一种船载自动混合水下投撒药剂及施肥方法，包括加药船只、药剂盒、控制阀、导药管、螺旋桨和输药口；所述加药船只上安装有药剂盒，加药船只的末尾安装有导药管，所述药剂盒和导药管直接安装有控制阀，所述输药口设置在螺旋桨的工作范围内中心位置，所述加药船只的末