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通过计算沈阳地区玉米的光热生产潜力，发现沈阳地区玉米的光热生产潜力可达到２１２８．４６ｋｇ／ｍｕ，生产上至今尚有６５％以上的生产潜力没有发挥出来．因地制宜，采取措施，克服限制因子培肥地力，提高栽培技术水平，开“源”畅“流”，是中低产田增产的重要途径．而选作优良品种，合理密植，选用适当的种值方式，增加投入，往意有机肥料和无机肥料的配合使用和平衡施肥，扩”库”、开“源”、畅“流”则是该地区高产再高产的关键措施．
By calculating the photothermal production potential of maize in Shenyang, it is found that the photothermal production potential of maize in Shenyang can reach 2128.46kg / mu. Up to now, more than 65% of the production potential of maize has not been brought into play. According to local conditions, to take measures to overcome the restrictive factors fertilize fertility, improve the level of cultivation techniques, open “source” Chang “flow” is an important way for middle and low yield increase. The selection of fine varieties, reasonable close planting, the appropriate choice of species value approach to increase investment, intended to use organic fertilizers and inorganic fertilizers and the balanced use of fertilizers, expanding “library”, open “source”, Chang “stream” is the Key Measures for High Yield and High Output in High Yield Areas.