| NH4＋-N和NO3--N供应条件下水稻磷高效品种初选 |
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| 引用本文： | 陈晨,龚海青,金梦灿,郜红建.NH4＋-N和NO3--N供应条件下水稻磷高效品种初选[J].中国农业大学学报,2018,23(9):32-42. |
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| 作者姓名： | 陈晨 龚海青 金梦灿 郜红建 |
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| 作者单位： | 安徽农业大学资源与环境学院/农田生态保育与污染防控安徽省重点实验室 |
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| 基金项目： | 国家科技支撑计划项目（2013BAD07B08）和国家重点研发计划项目（2016YFD0200107、2016YFD0300801、2016YFD0300900）课题资助 |
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| 摘 要： | 为探讨在NH_4~+-N和NO_3~--N条件下不同水稻品种生物量、磷素含量及磷素累积量的差异。利用国际水稻所营养液培养方法,在相同浓度(40mg/L)NH_4~+-N和NO_3~--N条件下测定102个水稻品种苗期生物量和磷素吸收积累量的差异,并采用隶属函数法将评价指标进行标准化,基于磷效率综合值和分层聚类热图分析,进行水稻品种磷效率类型划分。在NH_4~+-N和NO_3~--N下,不同水稻品种的生物量和磷累积量差异性显著,变异系数分别在52.83%~69.54%和52.82%~73.82%。在NH_4~+-N和NO_3~--N培养下的主成分情况相同,主成分1由茎叶生物量、根系生物量、整株生物量、茎叶磷累积量、根系磷累积量和整株磷累积量决定,主要反映植株的生物量及磷素累积量;主成分2由不同器官的磷含量决定。综合水稻苗期磷素吸收累积统计分析方法,将茎叶生物量、根系生物量、整株生物量、茎叶磷累积量、根系磷累积量和整株磷累积量作为水稻苗期磷高效综合评价指标。初步认为‘2845’、‘中籼2503’、‘华瑞稻’、‘连粳7号’、‘德香4103’、‘甬优9号’、‘Ⅱ优602’、‘两优766’、‘盐粳11号’、‘丰两优80’和‘深两优1813’为2种氮素供应下的磷高效型品种/系。
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| 关 键 词： | 水稻 NH4+-N NO3--N 磷效率 磷高效品种 |
| 收稿时间： | 2017/9/5 0:00:00 |
Primary screening of high phosphorus use efficiency of rice varieties under NH4+-N and NO3--N conditions |
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| CHEN Chen,GONG Haiqing,JIN Mengcan and GAO Hongjian.Primary screening of high phosphorus use efficiency of rice varieties under NH4+-N and NO3--N conditions[J].Journal of China Agricultural University,2018,23(9):32-42. |
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| Authors: | CHEN Chen GONG Haiqing JIN Mengcan and GAO Hongjian |
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| Institution: | School of Resources and Environment/Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, Anhui Agricultural University, Hefei 230036, China,School of Resources and Environment/Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, Anhui Agricultural University, Hefei 230036, China,School of Resources and Environment/Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, Anhui Agricultural University, Hefei 230036, China and School of Resources and Environment/Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, Anhui Agricultural University, Hefei 230036, China |
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