首页|淮北地区氮高效高产型粳稻品种群体生长特征研究

淮北地区氮高效高产型粳稻品种群体生长特征研究

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
[目的]本研究旨在阐明淮北地区氮高效高产型粳稻品种的群体生长特征.[方法]在各自最适施氮水平下,选用淮北地区氮高效高产型、氮中效高产型和氮高效中产型3类代表性常规粳稻品种,研究不同类型水稻品种产量、茎蘖动态、叶面积及物质生产与积累特征.[结果]拔节前氮高效高产型群体茎蘖数最少,拔节后平缓下降,最终成穗率最高;氮高效高产型水稻品种抽穗期叶面积指数最大,氮低效低产型最小,氮高效高产型水稻品种最大叶面积指数分别比氮中效高产型、氮高效中产型高2.53%、5.58%;有效叶面积率表现为氮高效高产型>氮高效中产型>氮中效高产型,高效叶面积率表现为氮中效高产型>氮高效高产型>氮高效中产型;抽穗至成熟阶段,氮中效高产型和氮高效高产型群体光合势差异不显著,但均显著高于氮高效中产型,分别高10.58%和9.86%;氮高效高产型水稻成熟期干物质积累总量略低于氮中效高产型,抽穗至成熟阶段,随着籽粒产量的提高,干物质积累呈递增趋势,干物质积累比例以氮高效高产型最高;收获指数表现为氮高效型品种大于氮中效品种;氮高效高产型品种群体生长率在抽穗前低于氮中效高产型品种,而在抽穗至成熟阶段则显著高于氮中效高产型与氮高效中产型,分别高8.79%、17.46%.[结论]氮高效高产型水稻品种拔节前叶面积指数、干物质积累量和群体生长率均低于氮高效中产型和氮中效高产型;抽穗到成熟期光合势、收获指数、群体生长率、成穗率和干物质积累量及比例最高.
Characteristics of Population Growth in japonica Rice Varieties with High Nitrogen Use Efficiency and High Yield in Huaibei Area
[Objective]The aim was to clarify the characteristics of population growth of japonica varieties with high nitrogen use efficiency and high yield in Huaibei Area.[Method]The yield components, number of stems and tillers,leaf area and population biomass production were investigated under their optimum N levels with 3 representative japonica varieties [high N use efficiency and high yield (HNUEHY), medium N use efficiency and high yield(MNUEHY), high N use efficiency and medium yield(MNUEMY)] as material. [Result]Number of stems and tillers increased slowly to the peak in jointing stage of HNUEHY, and then decreased gently with the highest percentage of productive tillers. The leaf area indexes of HNUEHY and HNUEMY were the highest and lowest at heading stage. The leaf area index of HNUEHY were 2.53% and 2.58% higher than that of MNUEHY and HNUEMY. The order of effective leaf area index was HNUEHY> HNUEMY> MNUEHY, the order of high effective leaf area index was MNUEHY> HNUEHY> HNUEMY. From heading to maturity stage, the photosynthetic potentials of HNUEHY and MNUEHY were 10.58% and 9.86%higher than that of HNUEMY, showing no obvious difference between each other. The total dry matter accumulation of HNUEHY was slightly lower than that of MNUEHY. From heading to maturity stage, the dry matter accumulations increased with increasing yield level with the highest ratio for HNUEHY. Before jointing stage, the crop growth rate of HNUEHY was lower than that of MNUEHY. After joining stage, the crop growth rate of HNUEHY were 8.79% and 17.46% higher than that of MNUEHY and HNUEMY. [Conclusion]The leaf area index, dry matter accumulation and crop growth rate of HNUEHY were less than those of MNUEHY and HNUEMY before jointing stage; while the photosynthetic potential, harvest index, percentage of productive tillers, crop growth rate and dry matter accumulation and ratio of HNUEHY were the highest from heading to maturity stage.

ricehigh nitrogen use efficiency and high yieldpopulationcharacteristics of growth

梁健、赵晨、韩超、任红茹、陈梦云、张洪程、霍中洋

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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

水稻 氮高效高产 群体 生长特征

国家科技支撑计划资助项目国家科技支撑计划资助项目江苏省科技计划资助项目江苏省科技计划资助项目江苏省农业三新工程资助项目扬州大学青蓝工程项目

2013BAD07B092016YFD0200805BE2015340BE2016351SXGC[2016]3212014

2017

10.16819/j.1001-7216.2017.7035

中国水稻科学
中国水稻研究所

中国水稻科学

CSTPCDCSCD北大核心
影响因子：1.775
ISSN：1001-7216
年,卷(期)：2017.31(4)
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