【摘要】 采用相关和回归分析 ,研究了黄淮冬麦区超高产小麦品种的产量结构及其相互间的关系。结果表明 :多穗型品种要实现超高产必须三要素协调 ,在保证足够穗数的前提下 ,提高穗粒数和千粒重 ,其最佳产量结构为穗数 6 80 6× 10 6 穗 /hm2 左右 ,穗粒数 38 16粒左右 ,千粒重4 0 34g左右 ;大穗型品种实现超高产的关键是提高穗粒数和千粒重 ,其最佳产量结构为穗数4 6 76× 10 6 穗 /hm2 左右 ,穗粒数 4 9 73粒左右 ,千粒重 4 9 38g左右。更多还原

【Abstract】 Correlation and regression analysis were used to study the yield structure of super high yield winter wheat cultivars in Huang huai winter wheat region and their interrelations.The results showed that for multiple spike varieties the number of spikes per hectare,the number of kernels per spike and 1000 kernel′s weight should be harmonized to achieve super high yielding,the optimum yield structure was 680 6×10 4 spikes/ha,38.16 kernels/spike,40.34g/1000 kernel and that for big spike varieties,the key is to increase the number of kernels per spike and 1000 kernel′s weight,the optimum yield structure was 467.6×10 4 spikes/ha, 49.73 kernels/spike, 49.38 g/1000 kernels.Finally,breeding super high yielding wheat cultivars was also discussed.更多还原