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于艳梅, 李芳花, 连 萍, 姜丽霞, 孟 岩.淹涝胁迫对拔节期水稻生长影响的研究水资源与水工程学报[J].,2018,29(6):240-244
淹涝胁迫对拔节期水稻生长影响的研究
YU Yanmei1, LI Fanghua1, LIAN Ping2, JIANG Lixia3, MENG Yan1
  
DOI:10.11705/j.issn.1672-643X.2018.06.37
中文关键词:  水稻  淹涝胁迫  叶面积指数  净光合速率  干物质
英文关键词:rice  submergence stress  leaf area index  net photosynthetic rate  dry matter
基金项目:国家自然科学基金项目(31671575); 黑龙江省财政厅专项项目(ZN201802)
作者单位
于艳梅1, 李芳花1, 连 萍2, 姜丽霞3, 孟 岩1 (1.黑龙江省水利科学研究院 黑龙江 哈尔滨 150080 2.黑龙江省气象数据中心黑龙江 哈尔滨 150030 3.黑龙江省气象科学研究所 黑龙江 哈尔滨 150030) 
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中文摘要:
      为明确淹涝胁迫对拔节期水稻生长影响,通过水稻淹水试验模拟洪涝胁迫状态,以淹水深度和淹水历时设计不同胁迫程度,分析拔节期不同淹涝胁迫强度下排水后第1、第3和第7 d以及水稻全生育期的叶面积、净光合速率和干物质变化规律。结果表明:水稻植株淹水处理随着排水后时间的延续,水稻LAI逐渐降低,Pn先升高然后逐渐降低,而干物质累积量呈现先减小后增大的趋势。各淹水处理的水稻LAIPn均低于CK处理,且水稻LAI呈现3/3 h<2/3 h<1/3 h处理,没顶淹没(3/3 h)水稻LAI仅为CK处理的69.53%~70.29%,全淹没处理(3/3 h-3 d和3/3 h-7 d)在生育末期出现Pn大于1/3 h和2/3 h处理、干物质量基本不变的现象。研究结果可为水稻安全生产提供基础依据。
英文摘要:
      In order to clarify the effects of submergence stress on rice growth during jointing stage, flood stress status was simulated through rice flooding test by designing different stress levels with flood depth and flood duration and analysis of leaf area, net photosynthetic rate and dry matter change at 1st,3rd and 7th day after drainage and the whole growth period of rice. The results showed that the flood treatment of rice plant continued after drainage, and rice leaf area index(LAI) gradually decreased, and Pn rises first and then gradually decreases. Meanwhile, the dry matter accumulation shows a trend of decrease first and then increase. Both LAI and Pn of the flooded rice were lower than the CK treatment, and the rice LAI showed 3/3h<2/3h<1/3h, long time total submerged treatment of rice LAI was only 69.53%~70.29% of CK treatment. The total flooding treatment occurred at the end of the reproductive period with Pn was greater than 1/3h and 2/3h, and the quality of dry matter was basically unchanged. Our results can provide the basis for the safe production of rice.
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