高产杂交稻生长和产量边际效应分析  

Analysis of the Border Effects on Growth and Yield of High Yielding Hybrid Rice

作　　者：张玉屏[1,2] 朱德峰[1] 林贤青[1] 陈惠哲[1] 

机构地区：[1]国家水稻生物学重点实验室,中国水稻研究所,浙江杭州310006 [2]南京农业大学,江苏南京210095

出　　处：《西南农业学报》2009年第2期248-251,共4页Southwest China Journal of Agricultural Sciences

基　　金：农业结构调整重大研究专项(2003-01-02A);农业跨越计划资助项目(01-01)

摘　　要：比较分析了高产杂交稻协优9308、两优培九和Ⅱ优7954的边行和中间行植株株高、物质生产量和产量及其结构的差异。结果表明：协优9308边行比中间行单丛增产93．8％，丛穗数、穗粒数和结实率分别提高57．1％，19．2％和3．5％。Ⅱ优7954丛穗数和穗总粒数分别提高64．4％和14．1％。两优培九丛穗数和穗总粒数分别提高53．9％和11．9％。在边行增产中，协优9308增穗增产贡献68％，增粒增产贡献32％。两优培九增穗增产贡献率达68．7％～82．3％，穗粒数增产贡献率达17．7％～31．3％。协优9308边行植株株高低于中间行植株约8．2％，而单株干物质生产量增加20．9％，穗重增加31．5％，穗着粒密度提高17．8％，边行植株收获指数提高8．8％。边行平均每穗粒数提高的原因是大穗比例增加，而较小穗比例略有下降。并就宽行稀植的栽培技术进行了讨论。Plant height, dry matter production, yield and its components were analyzed under the border hills and central hills with high yielding hybrid rice , Xieyou9308, Liangyoupeijiu and Ⅱ you 7954. The results showed that, compared with the central hills, yield, panicle number per hill and total grain number per panicle and fringe spikelet was increased by 93.8%, 57.1%, 19.2% and 3.5% respectively in Xieyou9308. The panicle number per hill and total grain number per panicle were increased by 64.4% and 14.1% respectively in Ⅱ you 7954. The panicle number per hill and total grain number per panicle were increased by 53.9% and 11.9% respectively in Liangyoupeijiu, The increase of panicle number per hill and grain number per panicle contributed to yield increase by 68% and 32% respectively in Xieyou9308, the increase of panicle number per hill increased from 68.7% to 82.3% in Liangyoupeijiu, grain number per panicle increased from 17.7% to 31.3%. Plant height in border hill was lower than one of central hill by 8.2%. But, dry matter, a panicle weight and grain number per panicle length and HI in plant border hill were increased by 20.9%, 31.5%, 17.8% and 8.8%. One grain per panicle in plants of border hills was the result of high percentage of high panicle compared with plants of central hills. Practice of space planting with wider row space in rice production was discussed.

关 键 词：杂交稻 生长 产量 边际 

分 类 号：S511[农业科学—作物学]