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选用性状比较典型的8个玉米杂交种,通过两年的比较试验,探讨黄淮海平原地区夏玉米高产栽培的品种特性。结果表明,在高产栽培条件下,不同玉米杂交种的生产力存在很大差别。在黄淮海平原地区,中大穗玉米杂交种的群体生产力表现出明显的优势,早期能够迅速建成合理的群体,具有较大的叶面积和光合势;后期叶片不早衰,光合生产能力强,干物质积累多,吐丝后干物质积累占的比例较大,分配合理,经济产量高。
Eight maize hybrids with typical traits were selected and compared for two years to explore the characteristics of high-yielding summer maize cultivars in the Huang-Huai-Hai Plain. The results showed that under high-yielding cultivation conditions, the productivity of different maize hybrids varied widely. In the area of Huang-Huai-Hai Plain, the population productivity of middle-large ear hybrids showed obvious advantages, which could be quickly established into a reasonable population in the early stage, with larger leaf area and photosynthetic potential, no premature leaf decay at the late stage, strong photosynthetic production capacity, Accumulation of more material, silk after dry matter accumulation accounted for a larger proportion, reasonable distribution, high economic output.