Xinjiang cotton phosphate fertilizer recommended fertilization method

The invention relates to the technical field of scientific application, in particular to a Xinjiang cotton phosphate fertilizer recommended fertilization method which comprises the following steps: (1) determining a target yield according to the cotton yield obtained in previous year or last year; (2) determining a phosphorus yield reaction of the cotton according to the soil nutrient grade of thecotton field and the target yield; (3) determining the phosphorus nutrient residual effect of the last season crop according to the last season yield; and (4) calculating the phosphorus application amount of the cotton according to the known phosphorus yield reaction, the crop removal amount and the phosphorus nutrient residual effect in the last season. According to the method, indexes such as target yield, soil basic nutrient supply, phosphorus yield reaction and last season phosphorus residual effect are combined; balance application of phosphorus nutrients is considered, so that cotton phosphate fertilizer applic