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我国许多地区以玉米作为主要经济作物或粮食作物。某省的玉米播种面积较大,约为168.5万hm2,其总产量的在该省的粮食总产量中的占比约为62.0%左右。该省玉米的单位产量,基本保持在5200kg/hm2,单产能力不足,与玉米种植的最优化产量存在较大的差异。该省的旱地面积在其中耕地面积中的占比约为83.0%,应受到气候的影响较大,玉米种植的密度没有相应的标准进行衡量,对于产量及性状的影响较大,即在单位面积内,玉米的种植密度保持在一定的范围内其产量会达到最优,且玉米的性状也会达到最佳,如果超过该指标或者低于该指标,均无法达到理想的效果。基于此,简单阐述了对于玉米产量与种植密度关系的实验,分析了不同的种植密度对于玉米产量及性状的影响,为提高玉米产量进行一定的指导。
In many parts of our country, corn is used as a major cash crop or food crop. A province has a large area of maize planting of about 1.685 million hm2, accounting for about 62.0% of its total grain output in the province. The unit output of maize in the province remained basically at 5200kg / hm2, with insufficient yield per unit, which was different from the optimal yield of maize planting. The dry land area of the province accounted for about 83.0% of the cultivated land area, which should be affected by the climate. The planting density of maize is not measured by the corresponding standard, which has greater impact on yield and traits, that is, Within the corn planting density maintained within a certain range of its production will reach the best, and corn will achieve the best traits, if more than the index or less than the index, are unable to achieve the desired results. Based on this, the experiments on the relationship between corn yield and planting density were briefly described. The effects of different planting densities on the yield and traits of maize were analyzed. Some guidance was given to improve the yield of maize.