通常认为，钾肥、氮肥、密度是影响浙西河谷平原地区杂交晚稻产量的三个重要因素。我们以该三因子为研究对象，建立杂交晚稻汕优１０号高产栽培数学模型。结果表明，钾肥对其产量影响居三因子之首，并同产量呈显著相关关系。 It is generally believed that the three important factors that affect the yield of late hybrid rice in the western Zhejiang plain are potassium, nitrogen and density. Taking the three factors as the research object, we established a mathematic model of high yielding hybrid rice Shanyou 10. The results showed that the impact of potash fertilizer on yield was the first of three factors, and was significantly related to the yield.