Comprehensive water storage irrigation system for sponge city

A comprehensive water storage irrigation system for a sponge city comprises a rainwater permeation layer, a main water storage tank and an auxiliary water storage tank, the main water storage tank is located below the rainwater permeation layer, a lane separation slope is arranged in the main water storage tank, and a first pipeline and a second pipeline which are obliquely arranged are arranged in the lane separation slope; and a first water valve and a second water valve are respectively arranged on the first pipeline and the second pipeline. The comprehensive water storage irrigation system is provided with the three levels of water storage tanks, the water storage amount is increased, and meanwhile rainwater collected by a sponge city is effectively utilized; feedback adjustment is adopted in the whole comprehensive water storage irrigation system, the working states of a water valve and a drainage pump are controlled through feedback of a liquid level sensor, and the purpose of automatic adjustment is ac