The invention relates to a cotton cultivation method. The method comprises the following steps: 
sowing of cotton seeds and laying of 
drip irrigation pipes: 
sowing three rows of cotton seeds under a mulching film, laying a 
drip irrigation pipe on each row; 
drip irrigation of 
seedling emergence period water; drip 
irrigation of 
bud period water, wherein the maximum 
water holding amount of the soil in the 
bud period is 70%-80%, the drip 
irrigation liquid of the 
bud period water is clear water or a water and 
fertilizer mixed solution; drip 
irrigation of flowering and boll-setting period water, wherein the maximum 
water holding amount of the soil in the flowering and boll-setting period is 80%-90%, and the drip irrigation liquid of the flowering and boll-setting period water is a water and 
fertilizer mixed solution; drip irrigation of boll opening period water, wherein the maximum 
water holding amount of the soil in the boll opening period is 60%-70%, and the drip irrigation liquid of the boll opening period water is clear water or a water and 
fertilizer mixed solution. The method also comprises the steps: flowering and boll-setting period chemical 
topping, flowering and boll-setting period cotton spindling controlling, and 
ripening and defoliating. Water and fertilizer are saved, water, fertilizer and 
sunlight can be fully utilized by the cotton, the mechanical production is achieved, manpower and 
material resources are saved, and finally the cotton yield is improved.