Cotton and watermelon intercropping cultivation method

The invention discloses a cotton and watermelon intercropping cultivation method which comprises the following steps of land selection, land fertilization, ridging, seed screening, planting, watering, weeding, fertilization and disease and pest control, so that cotton and watermelon intercropping cultivation is achieved, soil which is moist, high in water and fertilizer retention, loose in texture, neutral and suitable for crop planting is selected, the land is deeply ploughed, and the soil is applied to the field. The method comprises the steps that hard land becomes loose, farmyard manure is applied in the process of deep ploughing of the land, the deeply ploughed soil and the farmyard manure are fully mixed, and after the deeply ploughed soil and the farmyard manure are fully mixed, preparation work before land ridging and sowing is completed. According to the method, ridging planting is conducted on watermelons, the land area is increased, the single-row planting density of the watermelons is improved, co