作物学报
作物學報
작물학보
ACTA AGRONOMICA SINICA
2014年
10期
1819-1829
,共11页
韦还和%李超%张洪程%孙玉海%孟天瑶%杨筠文%马荣荣%王晓燕%戴其根%霍中洋%许轲%魏海燕
韋還和%李超%張洪程%孫玉海%孟天瑤%楊筠文%馬榮榮%王曉燕%戴其根%霍中洋%許軻%魏海燕
위환화%리초%장홍정%손옥해%맹천요%양균문%마영영%왕효연%대기근%곽중양%허가%위해연
甬优12%超高产%分蘖特性
甬優12%超高產%分蘗特性
용우12%초고산%분얼특성
Yongyou 12%Super-high yield%Tillering characteristics
以籼粳交超级稻甬优12为试材，四叶一心期带蘖小苗移栽，通过栽培措施的调控，形成超高产(>13.0 t hm-2)和高产(>12.0 t hm-2)群体，以高产群体作为对照，对分蘖挂牌追踪，比较研究超高产群体分蘖发生成穗特点。结果表明，超高产群体分蘖产量及对总产量的贡献率分别为11.53 t hm-2和87.77%，高产群体分别为10.59 t hm-2和87.40%。超高产和高产群体的分蘖利用都以一次和二次分蘖为主，超高产群体一次和二次分蘖的产量均高于高产群体，超高产群体一次分蘖产量的贡献率略低于高产群体，二次分蘖产量的贡献率高于高产群体。超高产群体一次分蘖发生在第1至第9叶位，第4至第7叶位是分蘖发生与成穗的优势叶位，二次分蘖以1/3、2/3、3/3、2/4、1/5蘖位优势较强。对于高产群体而言，一次分蘖以第4至第7叶位分蘖优势较强，二次分蘖以1/3、2/3、3/3优势较强，三次分蘖发生叶位数明显多于超高产群体，但成穗率较低。超高产群体成穗分蘖的穗长、单穗重、总粒数、着粒密度的平均值高于高产群体，结实率却略低于高产群体。
以秈粳交超級稻甬優12為試材，四葉一心期帶蘗小苗移栽，通過栽培措施的調控，形成超高產(>13.0 t hm-2)和高產(>12.0 t hm-2)群體，以高產群體作為對照，對分蘗掛牌追蹤，比較研究超高產群體分蘗髮生成穗特點。結果錶明，超高產群體分蘗產量及對總產量的貢獻率分彆為11.53 t hm-2和87.77%，高產群體分彆為10.59 t hm-2和87.40%。超高產和高產群體的分蘗利用都以一次和二次分蘗為主，超高產群體一次和二次分蘗的產量均高于高產群體，超高產群體一次分蘗產量的貢獻率略低于高產群體，二次分蘗產量的貢獻率高于高產群體。超高產群體一次分蘗髮生在第1至第9葉位，第4至第7葉位是分蘗髮生與成穗的優勢葉位，二次分蘗以1/3、2/3、3/3、2/4、1/5蘗位優勢較彊。對于高產群體而言，一次分蘗以第4至第7葉位分蘗優勢較彊，二次分蘗以1/3、2/3、3/3優勢較彊，三次分蘗髮生葉位數明顯多于超高產群體，但成穗率較低。超高產群體成穗分蘗的穗長、單穗重、總粒數、著粒密度的平均值高于高產群體，結實率卻略低于高產群體。
이선갱교초급도용우12위시재，사협일심기대얼소묘이재，통과재배조시적조공，형성초고산(>13.0 t hm-2)화고산(>12.0 t hm-2)군체，이고산군체작위대조，대분얼괘패추종，비교연구초고산군체분얼발생성수특점。결과표명，초고산군체분얼산량급대총산량적공헌솔분별위11.53 t hm-2화87.77%，고산군체분별위10.59 t hm-2화87.40%。초고산화고산군체적분얼이용도이일차화이차분얼위주，초고산군체일차화이차분얼적산량균고우고산군체，초고산군체일차분얼산량적공헌솔략저우고산군체，이차분얼산량적공헌솔고우고산군체。초고산군체일차분얼발생재제1지제9협위，제4지제7협위시분얼발생여성수적우세협위，이차분얼이1/3、2/3、3/3、2/4、1/5얼위우세교강。대우고산군체이언，일차분얼이제4지제7협위분얼우세교강，이차분얼이1/3、2/3、3/3우세교강，삼차분얼발생협위수명현다우초고산군체，단성수솔교저。초고산군체성수분얼적수장、단수중、총립수、착립밀도적평균치고우고산군체，결실솔각략저우고산군체。
We comparatively studied tillering and panicle formation characteristics of super-high and high yield populations formed by the regulation of cultivation measures using indica-japonica super rice Yongyou 12 transplanted by seedlings with tillers at the age of four leaves with one leaf bud. The results showed that yield from tillers and its contribution rate to total yield were 11.53 t ha-1 and 87.77%for super-high yield population, and 10.59 t ha-1 and 87.40%for high yield population. Super-high yield population had higher yield from primary and secondary tillers which were the major part contributed to total yield, the con-tribution rate to total yield of primary tillers for super-high yield population was slightly lower than that for high yield group, while that of secondary tillers, the contribution rate to total yield was higher in super-high yield population than in high yield population. For super-high yield population, the primary tillers emerged from leaf 1 to leaf 9 on main stem, among them the tillers from leaf 4 to leaf 7 had higher emerging rate and more panicles, secondary tillers emerged and earbeared mainly in 1/3, 2/3, 3/3, 2/4, 1/5. High yield population had higher emerging rate of triple tillers but lower panicle rate than super-high yield population, its primary tillers emerged and earbeared mainly in 4/0 to 7/0 while in the secondary tillers 1/3, 2/3, 3/3. Super-high yield population had higher mean values in panicle length, panicle weight, total grain number and grain density than high yield population, but seed-setting rate was slightly lower.
