Fertilizer control method for banana planting soil

The invention discloses a fertilizer control method for banana planting soil in the technical field of banana planting. The fertilizer control method comprises the following steps: S1, screening soil; s2, determining the types of fertilizers; s3, selecting a proper planting density; s4, fertilization; s5, index determination; s6, fertility feedback; the soil is red soil or brick red soil; the step of screening the red soil or the brick red soil comprises the following steps: selecting the red soil or the brick red soil with a deep soil layer, good drainage and a pH value of 5.0 or above, and removing weeds on the red soil or the brick red soil; the fertilizer is mainly prepared from potassium, phosphorus and nitrogen, and is supplemented by a microbial fertilizer or a microbial agent; the banana tree growth period can be divided into a seedling period, a vigorous growth period, a bud stage and a fruit development period, and microbial fertilizer or fungicide can be sprayed in the vigorous growth period, the b