在滨海地区轻盐土上，研究了饲料大麦西引二号氮、磷、钾施肥数学模型及最高和最佳施肥量，探讨了氮、磷、钾对大麦产量的影响及其互作效应。 On the light saline soil in the coastal area, the mathematic model of N, P and K fertilizers applied to the feed Daximai No. 2 and the maximum and optimum fertilization rates were studied. The effects of nitrogen, phosphorus and potassium on the yield of barley and their interaction effects were discussed.