【摘要】 选用最新育成的矮秆、中穗、耐密性好的紧凑型"超级玉米"新品种-登海3719,采取精准栽培技术措施,经受了花期高温、台风和病虫害侵袭的考验,创出了1402.86kg/667m2的夏玉米世界高产纪录。对其产量结构与高产群体质量指标的分析表明,登海3719在6802株/667m2种植密度条件下维持了较高整齐度,叶面积高值持续期达60d以上,粒叶比和经济系数较高,源库关系协调性较高。这充分显示了良种与栽培相结合的巨大创造力,是我国夏玉米栽培和育种上的重大突破。更多还原

【Abstract】 Denghai 3719,a new "super maize" hybrid with a lower plant height,intermediate ear and erectophile type,was applied in this trait to evaluate the super-high potentiality of it.Under high temperature,Taifeng conditions,a world record of summer maize,1402.86kg/667m2,was created by some exactitude cultivation technologies in the experiment.The analyses of yield structure and population quality partners showed the population uniformity,grains/leaves value and harvest index were high which indicated the relationship between resource and sink was harmony.The high value duration of leaf area index of the population was over 60 days to produce more photosynthetic matters.The record provided the creation of match of good hybrids and good cultivation technologies,and which was the great improvement of summer maize breeding and planting in China.更多还原