Multi-mode compatible fertilization system for preventing citrus root system from floating upwards

The utility model belongs to the field of citrus fertilization systems, and particularly relates to a multi-mode compatible fertilization system for preventing citrus root systems from floating upwards, which comprises a fertilizer conveying pipeline assembly, an inlet of the fertilizer conveying pipeline assembly is fixedly communicated with a fertilizer and water supply unit, and an outlet of the fertilizer conveying pipeline assembly is communicated with a plurality of inverted T-shaped fertilization pipeline assemblies. The bottoms of the multiple inverted-T-shaped fertilization pipeline assemblies are pre-buried in soil and arranged close to the periphery of a citrus root system, the periphery close to a citrus plant is marked as a water drip of the plant, and the multiple inverted-T-shaped fertilization pipeline assemblies are located on the side, close to the citrus root system, of the water drip of the citrus plant. A placement opening is formed in the top end of the inverted T-shaped fertilization pi