In order to explore the relationship between root traits and yield formation of early-late season super rice in South China under Strong-source-live-sink ( SSLS ) and conventional high-yield ( CHY ) cultivation tech-nique. Effects of two cultivation techniques on root traits at different periods,yield and yield components of super rice(Liangyoupeijiu,Shengtai 1 hao,Yuxiangyouzhan,Guinongzhan,Hemeizhan and Fengmeizhan) were investiga-ted in field. The results showed that big yield difference of different varieties under the same cultivation condition, Liangyoupeijiu>Shengtai1hao >Yuxiangyouzhan,Guinongzhan >Hemeizhan,Fengmeizhan. The yield of the same rice under Strong-source-live-sink cultivation was higher than conventional high-yield cultivation,the yield of Lian-gyoupeijiu,Shengtai 1 hao,Yuxiangyouzhan,Guinongzhan,Hemeizhan and Fengmeizhan was 10. 06%,19. 74%, 21. 58%,23. 39%,18. 60%,26. 23% higher respectively compared with conventional high-yield cultivation. Root length,root surface area and root volume of the same rice under Strong-source-live-sink cultivation were higher than conventional high-yield cultivation. Root length,root surface area,root volume and root tip number were positively correlated with dry matter accumulation above ground,most significant in booting stage and filling stage. It is be-lieved that root traits and yield under Strong-source-living-sink cultivation were better than conventional high-yield cultivation,so Strong-source-living-sink cultivation was more suitable as corresponding cultivation technique of ear-ly-late season super rice in South China.%为探索强源活库栽培技术和常规高产栽培技术条件下华南早晚兼用型超级稻根系性状与产量形成的关系,采用大田试验,以超级稻两优培九、胜泰1号、玉香油占、桂农占、合美占和丰美占为材料,研究了2种栽培技术对超级稻不同生育时期根系性状与产量及其产量构成因素的影响。结果表明：同一栽培条件下,不同水稻品种的产量差异较大,产量依次为两优培九>胜泰1号>玉香油占、桂农占>合美占、丰美占；同一水稻品种强源活库栽培比常规高产栽培产量高,两优培九、胜泰1号、玉香油占、桂农占、合美占和丰美占分别比常规高产栽培高10.06%,19．74%,21.58%,23.39%,18.60%,26.23%；同一水稻品种强源活库栽培下的根长、根表面积、根体积高于常规高产栽培；水稻根长、根表面积、根体积和根尖数与地上部干物质积累总体呈正相关,以孕穗期至灌浆期最为显著。强源活库栽培条件下水稻根系性状及产量优于常规高产栽培技术,增产效果好,表明强源活库栽培技术更适合作为华南早晚兼用型超级稻的配套栽培技术。
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