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作物学报 ›› 2014, Vol. 40 ›› Issue (12): 2149-2159.doi: 10.3724/SP.J.1006.2014.02149

• 耕作栽培·生理生化 • 上一篇    下一篇

水稻甬优12产量13.5 t hm-2以上超高产群体的生育特征

王晓燕1,韦还和2,张洪程2,*,孙健3,张建民3,李超2,陆惠斌4,杨筠文3,马荣荣5,许久夫6,王珏6,许跃进6,孙玉海2   

  1. 1 浙江省宁波市种子公司，浙江宁波315101；2 扬州大学农业部长江流域稻作技术创新中心, 江苏扬州 225009；3 浙江省宁波市鄞州区农业技术服务站，浙江宁波 315100；4 浙江省宁波市种植业管理总站，浙江宁波 315100；5 浙江省宁波市农业科学院作物研究所，浙江宁波 315101；6 浙江省宁波市鄞州区洞桥镇政府，浙江宁波 315157
  • 收稿日期:2014-04-14 修回日期:2014-07-06 出版日期:2014-12-12 网络出版日期:2014-08-04
  • 基金资助:

    本研究由农业部超级稻新品种选育与示范项目(02318802013231), 国家公益性行业(农业)科研专项(201303102)和宁波市重大科技项目(2013C11001)资助。

Population Characteristics for Super-High Yielding Hybrid Rice Yongyou 12 (>13.5 t ha-1)

WANG Xiao-Yan1,WEI Huan-He2,ZHANG Hong-Cheng2,*,SUN Jian3,ZHANG Jian-Min3,LI Chao2,LU Hui-Bin4,YANG Jun-Wen3,MA Rong-Rong5,XU Jiu-Fu6,WANG Jue6,XU Yue-Jin6,SUN Yu-Hai2   

  1. 1 Ningbo Seed Company of Zhejiang Province, Ningbo 315101, China; 2 Innovation Center of Rice Cultivation Technology in Yangtze Rive Valley, Ministry of Agriculture, Yangzhou University, Yangzhou 225009, China; 3 Ningbo City Yinzhou District Agricultural Technology Service Station of Zhejiang Province, Ningbo 315100, China; 4 Ningbo City Crop Farming Management Station, Ningbo 315100, China; 5 Crop Research Institute, Ningbo Academy of Agricultural Sciences of Zhejiang Province, Ningbo 315101, China; 6 Ningbo City Yinzhou District Dongqiao Town Government, Ningbo 315157, China
  • Received:2014-04-14 Revised:2014-07-06 Published:2014-12-12 Published online:2014-08-04

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被引次数

20

摘要：

以籼粳交超级稻甬优12为试材、四叶一心期带蘖小苗移栽，超稀植(12.45×104穴 hm-2)栽培，对高产(10.5~12.0 t hm-2)、更高产(12.0~13.5 t hm-2)、超高产(>13.5 t hm-2) 3个产量群体的产量及其结构、茎蘖动态、叶面积动态及干物质的积累与运转等进行了系统比较研究。结果表明，产量由高产(10.5~12.0 t hm-2)到更高产(12.0~13.5 t hm-2)再到超高产(>13.5 t hm-2)，群体的颖花量不断提高，结实率和千粒重略微下降。与高产和更高产群体相比，超高产群体茎蘖数起点较高，在有效分蘖临界叶龄期及时够苗，至拔节期群体茎蘖数稳步增长，达高峰苗，此后群体茎蘖数平缓下降，成穗率近60%；群体叶面积指数生育前期较小，最大值出现在孕穗期，为9.17，此后平缓下降，成熟期在4.0以上；群体干物质积累量在拔节期略低，此后各生育时期均升高，抽穗期为14.38 t hm-2，抽穗至成熟期为9.73 t hm-2，成熟期为24.11 t hm-2；群体根系干重、根冠比及单茎伤流强度在后期(抽穗至成熟期)均较高。

关键词: 甬优12, 超高产, 群体特征

Abstract:

Using indica-japonica super rice Yongyou 12, by transplanting seedlings with tillers at the age of four leaves with one leaf bud and applying super sparse cultivation technology, we compared and studied grain yield and its components, tiller dynamic, leaf area dynamic and accumulation dynamic of dry matter in three types of populations (High yield: 10.5–12.0 t ha-1; Higher yield: 12.0–13.5 t ha-1; Super-high yield: >13.5 t ha-1). The results showed that super-high yielding rice had more population spikelets, and slightly lower seed-setting rate and 1000-grain weight than high yielding and higher yielding rice. Compared with high yielding and higher yielding rice, super-high yielding rice showed more number of stems and tillers at transplanting stage and achieved the expected number of stems and tillers at the critical leaf-age for productive tillers. During jointing stage the number of stems and tillers increased steadily and up to the maximum with a panicle rate of nearly 60%. The leaf area index of super-high yielding rice was relatively smaller at the early stage and the maximum of 9.17 at booting stage, and then slowly declined to more than 4.0 at maturity; The dry matter weight was relatively smaller at jointing stage and then the highest at each phase of the super-high yielding rice, which was 14.38 t ha-1 at heading stage, 9.73 t ha-1 from heading to maturity stage, and 24.11 t ha-1 at maturity stage. The root dry weight, ratio of root to shoot and root bleeding intensity per stem of the super-high yielding rice population were all the highest from heading to maturity stages.

Key words: Yongyou 12, Super-high yielding, Population characteristics

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