华南早晚兼用型超级稻根系性状与产量形成的关系
首发时间:2013-12-18
摘要: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,研究强源活库栽培技术和常规高产栽培技术对水稻根系性状与产量形成的影响。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%和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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The Relationship Between Root Characters and Yield Formation of Super Rice in South China
Abstract:In order to explore the relationship between root characters and yield formation of early-late dual-purpose super rice in South China under Strong-Source-Live-Sink and conventional high-yield cultivation technique。Effects of Strong-Source-Live-Sink and conventional high-yield cultivation techniques on root characters and yield formation of super rice (Liangyoupeijiu, Shengtai 1 hao, Yuxiangyouzhan, Guinongzhan, Hemeizhan and Fengmeizhan) were investigated in field. Big yield difference of different varieties under the same cultivation condition, Liangyoupeijiu>Shengtai 1 hao>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 Liangyoupeijiu, Shengtai 1 hao, Yuxiangyouzhan, Guinongzhan, Hemeizhan and Fengmeizhan was 10.06%, 19.74%, 21.58%, 23.39%, 19.60%, 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. Root characters 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 techniques of early-late dual-purpose super rice in South China.
Keywords: super rice, root yield strong-source-live-sink conventional cultivation
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