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以一年生枸杞扦插幼苗为试材,用0.2%、0.4%、0.6%、0.8%的土壤含盐量对其进行胁迫,以清水为对照,研究盐胁迫条件下渗透调节物质、叶绿素含量以及生长表相参数的变化。结果表明:Na+、K+、Cl-3种离子在枸杞各器官中的含量不同,Na+和Cl-在叶中的含量最高,根中和茎中差异不显著,K+在各器官中的含量为叶>茎>根,3种离子在地上部分的含量均高于地下部分;随土壤含盐量的升高,Na+、Cl-、可溶性糖、脯氨酸含量均呈不同程度的上升;叶绿素含量在5月份差异不显著,在6、7、8月份随土壤含盐量的增高降低,光合能力减弱;存活率、生长率和耐盐表相值均随含盐量的升高,呈现不同程度的下降;各指标与耐盐表相值间存在着显著相关性,表明枸杞耐盐性的高低是多因素共同作用的结果;综合各指标认为,枸杞属于耐盐性强的植物,适合应用于滨海盐碱地区造林。
The annual cuttings of Lycium chinense cuttings were used as experimental materials, and were subjected to stress with 0.2%, 0.4%, 0.6% and 0.8% of soil salinity, and water as control, the osmotic adjustment substances, chlorophyll content and growth table Changes in phase parameters. The results showed that the contents of Na +, K + and Cl-3 ions were different in all organs of Lycium barbarum L. The content of Na + and Cl- in leaves was the highest, while there was no significant difference in roots and stems. The contents of K + > Stem> roots. The contents of three ions in the aerial part were higher than those in the underground part. With the increase of soil salinity, the contents of Na +, Cl-, soluble sugar and proline all increased to some extent. The content of chlorophyll The difference was not significant in May, and decreased with the increase of soil salinity in June, July and August, and weakened the photosynthetic capacity. The values of survival rate, growth rate and salt tolerance were all increased with the increase of salt content Decreased; the correlation between each index and salt table value is significant, indicating that the level of tolerance of Lycium barbarum is a result of multi-factor interaction; comprehensive indicators that the Chinese wolfberry belongs to the plant with strong salt tolerance, suitable for application in the coastal Saline alkali afforestation.