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[目的]在高密度栽培条件下,研究向日葵二比空栽培模式不同种植密度之间产量的差异。[方法]该研究以常规单垄单作栽培模式为对照,比较二比空栽培模式的不同种植密度对向日葵植株性状、产量构成因素及产量的影响。[结果]试验结果表明,在相同密度条件下,二比空栽培模式产量高于常规栽培模式,且适度降低种植密度可进一步提高向日葵产量。种植行株距为60 cm×52 cm时,二比空栽培模式较常规栽培模式增产6%左右,植株性状、产量构成因素均优于常规栽培模式,是最适宜的栽培密度。[结论]该研究揭示了向日葵二比空栽培模式增产增效的理论依据,为建立向日葵高产栽培技术体系提供技术支持。
[Objective] The research aimed to study the difference of yield between different planting densities in two-empty-cultivation of sunflower under high-density cultivation conditions. [Method] In this study, we compared the single planting mode with single ridge and compared the effects of different planting density on the traits, yield components and yield of sunflower. [Result] The results showed that under the same density condition, the yield of two-emptying cultivation model was higher than that of conventional cultivation mode, and the moderate reduction of planting density could further increase the yield of sunflower. When planting spacing was 60 cm × 52 cm, the two-empty cultivation mode increased yield by about 6% compared with conventional cultivation mode. Plant traits and yield components were better than conventional cultivation mode, which was the most suitable planting density. [Conclusion] This study revealed the theoretical basis of increasing yield and increasing efficiency of sunflower two-empty cultivation mode, and provided technical support for the establishment of high-yielding cultivation technique system of sunflower.