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该研究选用国审玉米新品种浚单29作为试验材料,对超高产夏玉米的产量性状、叶面积指数、干物质积累等进行分析,研究并集成了浚单29超高产栽培技术措施。结果表明:浚单29在高密度种植条件下,具有生育期适中,雌雄一致,库源关系协调性好,抗倒能力强,叶片保绿度好,光合性能强、干物质积累多等生长发育特性。通过超高产栽培措施的综合应用,实现了2013—2014年度试验平均产量超15 000kg/hm2的夏玉米高产目标。
In this study, Xunyi 29, a new national corn variety, was used as experimental material to analyze the yield traits, leaf area index and dry matter accumulation of super-high-yielding summer maize, and to study and integrate the super-high-yielding cultivation techniques of Xundan 29. The results showed that Xundan 29 had the characteristics of moderate growth period, uniform sex between male and female, good coordination between source and sink, strong anti-collapse ability, good green-keeping degree of leaves, strong photosynthetic capacity and more dry matter accumulation under high-density planting conditions characteristic. Through the comprehensive application of ultrahigh-yielding cultivation measures, the high-yield summer maize yield with the average output over 15 000kg / hm2 in 2013-2014 was achieved.