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研究了施肥对春玉米叶面积系数，氮、磷、钾吸收状况及干物质积累分配和经济产量的影响，并探讨了上述诸生长因素与经济产量之间的关系。结果表明，施肥使春玉米吸钾主要集中在前期的特性更加明显，全生育期的氮、磷吸收出现２ 个高峰（不施肥处理仅前期有１ 个氮、磷吸收高峰），灌浆期叶面积系数保持较高数值，后期干物质积累量大幅度提高，同时也使经济系数明显增大。相关分析指出，灌浆期叶面积系数，前、中期吸钾量，后期吸收氮、磷量及各生长发育阶段的干物质积累量均与经济产量显著相关
The effects of fertilization on leaf area index, N, P, K uptake, dry matter accumulation and distribution and economic yield of spring maize were studied. The relationships between these growth factors and economic yield were also discussed. The results showed that the characteristics of potassium uptake in spring maize were more obvious in the early stage, and nitrogen and phosphorus uptake in the whole growth period showed two peaks (no nitrogen and phosphorus uptake in the early stage) Coefficient to maintain a higher value, a substantial increase in the accumulation of late dry matter, but also make the economic coefficient increased significantly. Correlation analysis indicated that leaf area index, K uptake in early and middle stages, N uptake in later stage, P uptake and dry matter accumulation in each growth stage were significantly correlated with economic yield