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1991年我州引入掖单系列杂交玉米试种,结果表明:在诸多的掖单系列组合中,首推掖单13号最令人注目。为结合“吨粮土综合栽培模式技术”课题的研究,我们于1992年在海拔625米的黔东南州民族农校实习农场进行了密度与K、N肥的施量试验,并选用掖单13号作为分带轮作中玉米带的玉米用种,以探究该组合在分带轮作中的最佳密度和K及N的最适用量,进而为生产上的合理密植和合理施肥提供依据。
In 1991, the introduction of Yedan series hybrid corn in our county showed that: Among the many YEDA series combinations, the most prominent one is Yeda 13. In order to combine with the project of “Integrated Cultivation Technology of Tons of Grains and Lands”, we carried out the application experiments of density and K, N fertilizers in the farmer’s farm in Qiandongnan Prefecture in 1992 at an elevation of 625 meters, and selected Yedan 13 As the Corn Belt Corn Belt in order to explore the combination of the optimal density in the rotation and K and N the most appropriate amount of fertilizer, and then for the production of rational close planting and rational fertilization provided the basis.