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作物学报 ›› 2016, Vol. 42 ›› Issue (04): 540-550.doi: 10.3724/SP.J.1006.2016.00540

• 耕作栽培·生理生化 • 上一篇    下一篇

籼粳交超级稻甬优538花后氮素积累模型与特征分析

韦还和1，孟天瑶1，李超1，张洪程1,*，史天宇1，马荣荣2，王晓燕3，杨筠文4，戴其根1,*，霍中洋1，许轲1，魏海燕1，郭保卫1   

  1. 1扬州大学农业部长江流域稻作技术创新中心 / 江苏省作物遗传生理重点实验室, 江苏扬州 225009; 2 浙江省宁波市农业科学院作物研究所, 浙江宁波 315101; 3 浙江省宁波市种子公司, 浙江宁波315101; 4 浙江省宁波市鄞州区农业技术服务站, 浙江宁波 315100
  • 收稿日期:2015-10-25 修回日期:2016-01-11 出版日期:2016-04-12 网络出版日期:2016-01-25
  • 通讯作者: 张洪程, E-mail: hczhang@yzu.edu.cn; 戴其根, E-mail: qgdai@yzu.edu.cn
  • 基金资助:

    本研究由农业部超级稻专项(02318802013231), 国家公益性行业(农业)科研专项(201303102), 宁波市重大科技项目(2013C11001), 江苏省重点研发项目(BE2015340)和扬州大学研究生创新培养计划项目(KYLX15_1371)资助。

A Dynamic Model and Its Characteristics Analysis for Nitrogen Accumulation after Heading in Yongyou 538

WEI Huan-He1,MENG Tian-Yao1,LI Chao1,ZHANG Hong-Cheng1,*,SHI Tian-Yu1,MA Rong-Rong2,WANG Xiao-Yan3,YANG Jun-Wen4,DAI Qi-Gen1,*,HUO Zhong-Yang1,XU Ke1,WEI Hai-Yan1,GUO Bao-Wei1   

  1. 1 Innovation Center of Rice Cultivation Technology in Yangtze River Valley, Ministry of Agriculture /Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China; 2 Crop Research Institute, Ningbo Academy of Agricultural Sciences of Zhejiang Province, Ningbo 315101, China; 3 Ningbo Seed Company of Zhejiang Province, Ningbo 315101, China; 4 Agricultural Technology Extension and Service, Yinzhou District, Ningbo City, Zhejiang Province, Ningbo 315100, China
  • Received:2015-10-25 Revised:2016-01-11 Published:2016-04-12 Published online:2016-01-25
  • Contact: 张洪程, E-mail: hczhang@yzu.edu.cn; 戴其根, E-mail: qgdai@yzu.edu.cn
  • Supported by:

    This study was supported by the Special Program of Super Rice of the Ministry of Agricultural (02318802013231), China Special Fund for Agro-scientific Research in the Public Interest (201303102), the Great Technology Project of Ningbo City (2013C11001), the Key Projects of Jiangsu Province (BE2015340), and Innovative Training Program of Yangzhou University (KYLX15_1371).

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摘要：

以甬优籼粳交超级稻甬优538为试材，常规粳稻镇稻18和杂交籼稻中浙优1号为对照，研究甬优籼粳杂交稻花后氮素积累特征以及比较不同类型品种花后氮素积累特征差异。结果表明: (1)两年中，甬优538平均产量为12.5 t hm-2，显著高于对照。抽穗期、成熟期及抽穗-成熟期氮素积累量均呈甬优538>镇稻18>中浙优1号。百千克籽粒吸氮量以镇稻18最高，甬优538最低；氮肥偏生产力则以甬优538最高，镇稻18最低。甬优538花后茎鞘氮素转运量和转运率、穗部氮素积累量显著高于对照。(2)镇稻18和甬优538花后各时期氮素积累量均高于中浙优1号，且各品种花后氮素积累量与花后天数均以Richards方程拟合效果较好(R2均大于0.995)。分析特征参数，花后最大氮素积累速率、花后平均氮素积累速率及花后到达最大氮素积累速率的时间均呈镇稻18>中浙优1号>甬优538，花后氮素有效吸收时间则呈甬优538>镇稻18>中浙优1号。花后氮素积累渐增期、缓增期的持续天数、积累速率和积累量以镇稻18最高、甬优538最低，快增期的持续天数和积累量以甬优538显著高于对照。本研究结果表明，甬优538花后较强的氮素积累优势集中在快增期，此期氮素积累量占其花后氮素积累总量的86.1%(两年平均值)。且甬优538在花后快增期较强的氮素积累能力主要在于其较长的快增期持续天数。

关键词: 籼粳交超级稻, 不同类型品种, 花后氮素积累

Abstract:

A field experiment was conducted using indica/japonica hybrid super rice Yongyou 538 as the material, conventional japonica rice Zhendao 18 and hybrid indica rice Zhongzheyou 1 as the check to study the characteristics of nitrogen accumulation after heading and compare the differences in characteristics of nitrogen accumulation after heading in different types of rice variety. Results followed that, on an average across two years, grain yield of Yongyou 538 was 12.5 t ha-1, significantly higher than that of check varieties. Nitrogen accumulation at heading, at maturity, and from heading to maturity showed a trend of Yongyou 538>Zhendao 18>Zhongzheyou 1. Nitrogen absorption of 100 kg seeds of Zhendao 18 was the highest, followed by Zhongzheyou 1, and Yongyou 538, while opposite trends was observed for N partial factor productivity. Compared with the check, nitrogen output from stem and nitrogen increase in panicle of Yongyou 538 were consistently higher. Nitrogen accumulation in Yongyou 538 and Zhendao18 was both higher than that of Zhongzheyou 1 after heading, and Richards' equation was fit to simulate the relationship between nitrogen accumulation and days after heading for three types of rice variety (R2≥0.995). Maximum rate of nitrogen accumulation, mean rate of nitrogen accumulation, and days to maximum rate of nitrogen accumulation after heading in Zhendao 18 were the highest, while those in Yongyou 538 were the lowest. Effective nitrogen accumulation duration showed a trend of Yongyou 538> Zhendao 18>Zhongzheyou 1. Duration days, nitrogen accumulation rate, and nitrogen accumulation in early and late stage of Zhendao 18 were the highest, while those of Yongyou 538 were the lowest. Duration days and nitrogen accumulation in middle stage of Yongyou 538 was consistently higher compared with the check. Our results indicated that greater nitrogen uptake of Yongyou 538 was mainly occurred in the middle stage, which was 86.1% of the nitrogen accumulation from heading to maturity. And higher nitrogen uptake in middle stage after heading of Yongyou 538 was mainly attributed to the longer duration days in this stage.

Key words: Indica/japonica hybrid super rice of Yongyou series, Different rice type of cultivars, Nitrogen accumulation after heading

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