| 籼粳交超级稻甬优538花后氮素积累模型与特征分析 |
| |
| 引用本文： | 韦还和,孟天瑶,李超,张洪程,史天宇,马荣荣,王晓燕,杨筠文,戴其根,霍中洋,许轲,魏海燕,郭保卫.籼粳交超级稻甬优538花后氮素积累模型与特征分析[J].作物学报,2016,42(4):540-550. |
| |
| 作者姓名： | 韦还和 孟天瑶 李超 张洪程 史天宇 马荣荣 王晓燕 杨筠文 戴其根 霍中洋 许轲 魏海燕 郭保卫 |
| |
| 作者单位： | 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 |
| |
| 基金项目： | 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。 |
| |
| 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12.5t 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(R~2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 |
| 收稿时间： | 2015-10-25 |
A Dynamic Model and Its Characteristics Analysis for Nitrogen Accumulation after Heading in Yongyou 538 |
| |
| WEI Huan-He,MENG Tian-Yao,LI Chao,ZHANG Hong-Cheng,SHI Tian-Yu,MA Rong-Rong,WANG Xiao-Yan,YANG Jun-Wen,DAI Qi-Gen,HUO Zhong-Yang,XU Ke,WEI Hai-Yan,GUO Bao-Wei.A Dynamic Model and Its Characteristics Analysis for Nitrogen Accumulation after Heading in Yongyou 538[J].Acta Agronomica Sinica,2016,42(4):540-550. |
| |
| Authors: | WEI Huan-He MENG Tian-Yao LI Chao ZHANG Hong-Cheng SHI Tian-Yu MA Rong-Rong WANG Xiao-Yan YANG Jun-Wen DAI Qi-Gen HUO Zhong-Yang XU Ke WEI Hai-Yan GUO Bao-Wei |
| |
| 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. |
| |
| Keywords: | Indica/japonica hybrid super rice of Yongyou series Different rice type of cultivars Nitrogen accumulation after heading |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《作物学报》浏览原始摘要信息 |
| 点击此处可从《作物学报》下载免费的PDF全文 |
|
