This paper uses grey correlation analysis method in grey system theory to study the different grain scale planting benefit of Henan in the new era, and analyzes the grey overall correlation degree of the influence between the different grain scale planting benefit and the total revenue of Henan in new period. The results show that: the average per mu yield of wheat has most pronounced effect on the growth of the gross income, and the second is the average per mu and worth population. On the basis, it provides theoretical basis for the sustainable development of grain production and decision as well as the structure optimization of planting scale.%本文运用灰色系统理论中的灰色综合关联分析方法，对新时期河南粮食不同规模种植效益进行研究，分析了新时期河南粮食不同规模种植效益与总收益之间的各影响灰色综合关联度。研究结果表明：小麦的平均亩产对总收益的增长作用最为明显，其次是平均亩产和户均人口。在此基础上，也为粮食生产持续发展、决策，种植规模的结构优化提供相关的理论依据。
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