The different types of spring maize were used in this study.The effect of nitrogen dosage on starch content and key enzyme activity in composing starch in kernels of spring maize was studied.

• 摘要以不同品种春玉米为试验材料，研究氮肥施用量对春玉米子粒淀粉含量及淀粉合成关键酶活性的影响。