浅析紧凑型玉米杂交种的高产理论

• 作 者: 梁亚超
• 机 构: 黑龙江省农科院嫩江农科所 齐齐哈尔
• 出 处: 种子世界
• 发表日期: 1991年03期
• 关键词: 紧凑型玉米 平展型 光合面积 春玉米 夏玉米 种植密度 冠层结构 通风透光条件 增产效果 增产潜力

紧凑型玉米杂交种系指植株矮健,株型收敛而紧凑,叶片上举,改善冠层结构,通风透光条件良好,增加群体种植密度,扩大光合面积,光能网化高提高光能利用率,达到高产稳收的杂交种。 80年代以来,国内外以紧凑型为特点的玉米杂交种不断涌现,并在生产上取得了明显的增产效果。1985年美国采用紧凑型玉米杂交种创造了亩产1548公斤世界高产纪录,黑龙江和山东省,采用掖单号紧凑型玉米杂交种,创造春玉米和夏玉米亩产超1000公斤的高产纪录,国内外研究结果和生产实践证明,紧凑型玉米杂交种一般比平展型杂交种增产30～40%,从而展示了紧凑型玉米杂交种的巨大增产潜力和广阔的发展前景。

Compact maize hybrid stands for short plants, compact and compact plant type, leaves on the move, to improve the canopy structure, good ventilation and light conditions, increase population density and expand photosynthetic area, high light energy network to improve the use of light energy Rate, to achieve high yield and stability of hybrids. Since the 1980s, maize hybrids characterized by compactness both at home and abroad have been emerging continuously and have achieved remarkable yield-increasing effects in production. In 1985, the United States used compact corn hybrids to create 1548 kilograms of world high-yielding records. Heilongjiang and Shandong provinces used Yedan compact corn hybrids to create high-yielding records of over 1,000 kg of spring corn and summer corn per mu, The results of the research and the production practice prove that compact maize hybrids generally yield 30-40% more than the flat hybrids, which shows the huge potential yield potential and broad development prospects of the compact maize hybrids.