不同产区玉米最适种植规模及效益

对全国27个省（自治区、直辖市）的114个玉米种植大户和合作社的种植规模、产量和效益等进行调查分析，结果表明:种植大户和合作社种植效益最大的玉米种植规模，西北地区为6.67～33.3 hm2（100～500亩）和1 000 hm2（1.5万亩）以上，东北地区和黄淮海地区为13.3～33.3 hm2（200～500亩），西南地区为6.67～33.3 hm2（100～500亩）。西北地区和东北地区玉米种植效益最好，黄淮海地区受产量偏低制约次之，西南地区受产量低和成本高等因素制约，效益最差。 

Optimum Planting Scale of Corn and Its Benefit in Different Production Region

Planting scale，yield and benefit of 114 corn growers and cooperatives from 27 provinces（autonomous region，Municipalities）were investigated and analyzed. Results showed that corn planting scale of the highest benefit for growers and cooperatives was 6.67～33.3 hectares and 1 000 hectares or more in northwest region，13.3～33.3 hectares in northeast and Huang-Huai-Hai region，6.67～33.3 hectares in southwest region. The highest core planting benefit appeared in northeast and northwest region，followed by Huang-Huai-Hai region due to lower yield，and the lowest benefit appeared in southwest due to low yield and high cost.