| 盐碱胁迫对寒地粳稻产量形成机理的研究 |
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| 引用本文： | 步金宝,赵宏伟,刘化龙,王敬国,兴旺.盐碱胁迫对寒地粳稻产量形成机理的研究[J].农业现代化研究,2012,33(4):485-488. |
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| 作者姓名： | 步金宝 赵宏伟 刘化龙 王敬国 兴旺 |
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| 作者单位： | 东北农业大学农学院水稻研究所,黑龙江哈尔滨,150030 |
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| 基金项目： | "十二·五"农村领域国家科技计划项目，国家科技支撑项目 |
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| 摘 要： | 采用三个寒地粳稻品种和不同盐碱度盐碱土进行盆栽试验,探讨了盐碱胁迫对寒地粳稻产量形成的影响机理。结果表明:随土壤盐碱度的增加,水稻生育期延迟、分蘖数下降,每穴有效穗数、成穗率与千粒重呈明显降低趋势,且品种间差异较大;方差分析表明,盐碱胁迫下水稻减产主要是通过降低每穴穗数、成穗率与千粒重来实现的,轻度盐碱胁迫下耐盐碱品种吉玉粳、绥粳5产量降幅较小,而中度和重度盐碱胁迫下产量则极显著下降,而对照品种松粳6各处理间产量差异均极显著。因此,寒地盐碱稻作区水稻生产,应以提高水稻有效穗数、成穗率、千粒重为目标,选择盐碱度适宜的盐碱地和耐盐碱性较强的寒地粳稻品种。
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| 关 键 词： | 寒地粳稻 盐碱胁迫 生育期 分蘖 产量 |
Study on Yield Formation Mechanism of Salinity and Alkalinity Stress in Japonica Rice of Cold Region |
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| BU Jin-bao,ZHAO Hong-wei,LIU Hua-long,WANG Jing-guo and XING Wang.Study on Yield Formation Mechanism of Salinity and Alkalinity Stress in Japonica Rice of Cold Region[J].Research of Agricultural Modernization,2012,33(4):485-488. |
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| Authors: | BU Jin-bao ZHAO Hong-wei LIU Hua-long WANG Jing-guo and XING Wang |
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| Institution: | (Rice Research Institute,College of Agriculture,Northeast Agricultural University,Harbin,Heilongjiang 150030,China) |
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| Abstract: | In order to make clear the effect of salinity-alkalinity stress on yield formation mechanism in japonica rice of cold region,three kinds of rice with soil of different levels salinity-alkalinity stress were studied by pot test.The results showed as follows: with the increasing of development on salinity-alkalinity stress,there existed differences among varieties,the growth stage was delayed,tiller number was decreased,as well as effective panicles per hole,and panicle setting rate and grain weight were reduced significantly.Analysis of variance results showed that panicles per hole,panicle setting rate and grain weight being reduced determined yield decreased of salinity-alkalinity stress in rice.It had no significant differences in yield between Ji Yujing and Sui Jing 5 which were saline-alkali tolerant varieties with control treatment in low saline-alkali soil,while extremely remarkable differences were examined in high and medium saline-alkali soil.There was extremely remarkable difference in yield between Song Jing 6 which was saline-alkali resistance variety with check treatment under different levels salinity-alkalinity stress.It is very important to enhance panicles,panicle setting rate and thousand panicles weight of more saline-alkali tolerant varieties in suitable saline-alkali condition for rice production in saline-alkali soil. |
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| Keywords: | japonica rice of cold region salinity-alkalinity stress growth stage tiller yield |
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