玉米高产性能定量化分析及其技术途径

基于现有的研究基础,对产量性能定量分析体系、产量层次差异和生产障碍进行了综合分析,进一步完善玉米高产分析的理论,明确挖掘玉米高产潜力的技术途径。①基于对三合模式的产量分析,提出了产量性能定量分析体系,根据玉米高产实例提出了超15000kg/hm²的产量性能定量指标和进一步高产挖潜主攻方向;②明确了我国3大玉米主产区在光温生产、高产纪录、品种区试、农民生产田产量之间的产量层次性差异,分析了可能的原因和缩小产量层次差异的技术途径;③分析了我国目前不同玉米生产区的关键障碍性因素对产量性能可能产生的效应,提出了主要高产的技术保障措施,为实现我国玉米大面积高产高效目标提供理论与技术参考。

Quantitative Analysis and Technical Approaches to High-yield Performance in Maize

In order to further improve the theory of high-yield analysis and understand technical approaches of yield potential in maize, the quantitative analysis system of yield performance, the differences in yield levels and the production obstacles were analyzed in this paper. Based on a quantitative analysis system of yield performance with "three combination structure", the quantitative indicators of yield performance were more than 15 000 kg/ha, and main directions of yield potential increase were raised according to maize high-yield example. Yield level differences in the three main producing areas of maize among thermal yield, maximum yield, yield in experimental area and yield in farm were analyzed. Technical approaches were suggested to narrow the differences in yield level. Key obstacle factor effects on yield performance were analyzed. In conclusion, these analyses were important to the goals of maize high-yield and high efficiency in China.