Equipment for irrigation storage, efficient water-saving irrigation and energy-saving flood drainage under farmland tractor-ploughing stratum

The utility model relates to equipment for irrigation storage, efficient water-saving irrigation and energy-saving flood drainage under a farmland tractor-ploughing stratum, which can effectively solve the problems of single function, failure of efficient water economization, high cost and high labor consumption of the existing farmland irrigation equipment. The technical scheme for solution includes that a main water storage trough and a plurality of branch water storage troughs are arranged below the tractor-ploughing stratum, the branch water storage troughs communicated with the main water storage trough are arranged on two sides of the main water storage trough, water pipes are arranged in the troughs, the main trough water pipe is communicated with the branch trough water pipes, a portion of the main trough water pipe extending out of the main trough is connected with a water delivery pipe, and an irrigation unit is formed. A plurality of irrigation units are mounted side by side on the water delivery pipe, and one end of the water delivery pipe is communicated with a water inlet tank. A plastic waterproof layer, a water storage and delivery layer, a chopped straw layer, a protective soil layer and a tractor-ploughing stratum connected to the upper side of the protective soil layer are sequentially arranged in one main trough and the corresponding branch troughs, and the water storage and delivery layer is formed by mixing building debris and chopped straws in a fixed proportion. Filtration irrigation is achieved by means of straws, capillaries and by using root systems and soil with water absorption, water seepage and moisture expansion. The equipment is efficient in water economization as the problem that water evaporates in air and seeps in soil is better solved by using the filtration irrigation.