The present invention provides a device for increasing the yield through applying and adjusting the concentration of carbon dioxide and a system thereof, and relates to the technical field of devices for increasing yields of crops. The present invention comprises a base station and a gas-fertilizer applying pipe network, wherein the base station comprises a storage tank, a gasifier, an output device and a gas-fertilizer mixing proportioner the gas-fertilizer mixing proportioner is divided into a gas-water compounding cabinet and a gas- gas compounding tank one end of a gas-fertilizer transfer pipeline is communicated with the gas-water compounding cabinet, and the other end of the gas-fertilizer transfer pipeline is communicated with the gas-gas compounding tank the gas-water compounding cabinet and the gas-gas compounding tank are respectively communicated with a gas-water transfer pipeline and a gas-gas transfer pipeline the gas-water transfer pipeline and the gas-gas transfer pipeline are both provided with induction devices and electromagnetic transfer valves and the gas-water transfer pipeline and the gas-gas transfer pipeline are both communicated with the gas-fertilizer applying pipe network. The device and the system provided by the present invention have obvious yield-increasing, disease-resistant and sterilizing effects, are safe, simple and convenient to operate, are capable of greatly reducing carbon emission and beneficial to ecological restoration of lands, and storage and transportation and use manners can greatly reduce use cost. Fig.1
