苏打盐碱胁迫对灌浆期水稻剑叶光合特性和产量的影响 |
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引用本文: | 高显颖,义如格勒图,巴图仓,杨壘,迟晓雪,其力格尔,邵玺文,耿艳秋. 苏打盐碱胁迫对灌浆期水稻剑叶光合特性和产量的影响[J]. 安徽农业科学, 2018, 0(8): 61-63. DOI: 10.3969/j.issn.0517-6611.2018.08.017 |
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作者姓名: | 高显颖 义如格勒图 巴图仓 杨壘 迟晓雪 其力格尔 邵玺文 耿艳秋 |
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作者单位: | 呼伦贝尔市草原科学研究所,内蒙古呼伦贝尔,021008呼伦贝尔职业技术学院,内蒙古呼伦贝尔,021008吉林农业大学农学院,吉林长春,130118 |
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摘 要: | [目的]探究苏打盐碱胁迫对灌浆期水稻剑叶光合特性和产量的影响。[方法]盆栽条件下,以苏打盐碱土与自然黑土按比例配制成8种不同浓度的盐碱土,于水稻灌浆期测定各处理水稻叶片光合生理指标。[结果]轻度盐碱胁迫下,水稻的Pn、Gs和Tr差异不明显;随着盐碱胁迫的进一步增强,各处理水稻的Pn、Gs和Tr下降显著。不同处理胞间CO_2浓度(Ci)变化不大,说明气孔限制小,盐碱胁迫下Pn的下降来自于非气孔限制因素。[结论]盐碱胁迫下,水稻的光合作用和产量受到影响,轻度盐碱胁迫下,水稻光合作用和产量下降不显著,随着盐碱胁迫的增强,开始显著下降。
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关 键 词: | 盐碱胁迫 水稻 光合作用 产量 Saline-sodic stress Rice Photosynthetic characteristics Yield |
Effects of Saline Sodic Stress on Photosynthetic Characteristics of Flag Leaves and Yield of Rice at Filling Stage |
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Abstract: | [Objective]To study the effects of saline sodic stress on photosynthetic characteristics of flag leaves and yield of rice at filling stage. [Method]The pot culture experiment was conducted to study the photosynthetic and physiological indexes of flag leaves of rice at filling stage in different treatments by mixing 8 different concentrations of saline-alkali soils according to the proportion of the soda saline-alkali soil and natural soil.[Result]Under light saline sodic stress,the differences in Pn,Gs and Tr were not significant.With the further enhancement of saline-alkali stress,the differences in Pn,Gs and Tr between different treatments were significant.Intercellular CO2concentration(Ci)in different treatments had little changes,indicating that stomatal limitation effects were little.The decrease of Pn was from non-stomatal limitation effect under saline sodic stress.[Conclusion]Under saline-alkali stress,photosynthetic characteristics in flag leaves and yield of rice decreased.Under light saline-alkali stress,photosynthetic characteristics and yield of rice showed no significant decrease.With the increase of saline-alkali stress,the decline became significant. |
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