A study looked at how different fertilizers affect rapeseed growth in a cotton-rapeseed system. Nitrogen, phosphorus, and potassium fertilizers were tested, and they all helped rapeseed plants grow better and produce more seeds. The best combination of fertilizers for rapeseed was 205kg of nitrogen, 76kg of phosphorus, and 35kg of potassium per hectare. This information can help farmers increase their rapeseed yield and profit.