采用五元二次正交通用旋转设计，研究了甘蔗下种量、行距、氮、磷、钾肥用量与产量的关系。结果表明：下种量、行距、氮肥、磷肥、钾肥对产量的作用顺序是：下种量＞氮肥＞行距＞钾肥＞磷肥。通过计算机模拟分析、寻优，提出了公顷产量在５７～７５ｔ之间的优化栽培方案，为镇康旱地甘蔗高产优化栽培提供了科学依据 The quintic quadratic orthogonal rotation design was used to study the relationship between the amount of seedling, row spacing, N, P and K fertilizers and yield. The results showed that the order of the next seed quantity, row spacing, nitrogen fertilizer, phosphate fertilizer and potassium fertilizer on the yield was the following order: undergrowth> nitrogen fertilizer> row spacing> potash fertilizer> phosphate fertilizer. Through computer simulation and optimization, we put forward the optimal cultivation plan with the yield of 57 ~ 75t ha, which provides a scientific basis for the high yield and optimum cultivation of sugarcane in Zhenkang dryland