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当前位置: 首页 > 文章 > 盐环境下盐角草叶绿素荧光光系统对氮素的响应 新疆农业科学 2018 (10) 1936-1942
Position: Home > Articles > Response of Saliconia-Europea L. Chlorophyll Fluorescence System to Nitrogen in Salt Environment Xinjiang Agricultural Sciences 2018 (10) 1936-1942

盐环境下盐角草叶绿素荧光光系统对氮素的响应

作  者：
黄建;祁通;王治国;王勤良;付彦博;孟阿静
单  位：
新疆农业科学院土壤肥料与农业节水研究所
关键词：
盐角草;土壤盐分;氮素;叶绿素荧光
摘  要：
【目的】研究盐环境下施氮水平对盐角草幼苗光系统的响应机制。【方法】采用盆栽试验,研究不同施氮水平对盐环境下生长的盐角草(Saliconia-Europea L.)幼苗叶光系统II (PSII)荧光特性的影响。【结果】盐角草在重度盐环境条件下,增施氮可以显著增加叶片(同化枝)各项光合色素含量,但当施氮量超过N3 2.4 g/kg时,各项光合色素含量开始下降;施N 0～1.2 g/kg能提高盐环境下生长的盐角草叶潜在光化学效率,当高于1.2 g/kg施N量时,提升效果不显著;施N 0～4.8 g/kg能提高盐环境下生长的盐角草叶PSII的活性,在有效光强0～820μmol/(m~2·s)可以增加叶片光合系统的开放程度,提高盐角草光能利用率,增强叶片光反应中心的耐受性。【结论】盐环境下施N能够增强盐角草光合系统的活性,提高光能利用率,增强其对盐渍环境的适应性。
译  名：
Response of Saliconia-Europea L. Chlorophyll Fluorescence System to Nitrogen in Salt Environment
作  者：
HUANG Jian;QI tong;WANG Zhi-guo;WANG Qing-liang;FU Yan-bo;MENG A-jing;Research Institute of Soil, Fertilizer and Agricultural Water Conservation, Xinjiang Academy of Agricultural Sciences;
关键词：
Salicornia-Europaea L.;;soil salinity;;nitrogen;;chlorophyll fluorescence
摘  要：
【Objective】 To reveal the response mechanism of photosynthesis to nitrogen level of Salicornia used in salt environment, scientific fertilization management should be carried out.【Method】Pot experiments were conducted to study the effects of different nitrogen application levels on the fluorescence characteristics of seedling photosynthetic system II(PSII) of Saliconia grown in salt environment.【Result】The results showed that nitrogen application in heavy salt environment could significantly increase the content of photosynthetic pigments, such as chlorophyll a, chlorophyll b and carotenoid, but the content of photosynthetic pigments decreased when the amount of nitrogen was more than N3(2.4 g/kg). The application of N(0-1.2 g/kg) could improve the potential photochemical efficiency of the leaves grown in salt environment, but when N application amount was larger than 1.2 g/kg, the effect was not significant; Application of N(0-4.8 g/kg) could improve the activity of PSII in the leaves of Salicornia grown in salt environment and in the range of effective light intensity(0-820 μmol/(m~2·s)), the opening degree of photosynthetic system in leaves was increased, the light energy utilization rate was increased, and the tolerance of light response center in leaves was enhanced.【Conclusion】Under the salt environment, N could increase the activity of PSII and the utilization rate, thus enhancing the adaptability to the saline environment.

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