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当前位置: 首页 > 文章 > 蛇麻黄浸提液对苔藓结皮生长的影响 草业学报 2018 (3) 187-193
Position: Home > Articles > Effect of Ephedra distachya extracts on moss crust growth Acta Prataculturae Sinica 2018 (3) 187-193

蛇麻黄浸提液对苔藓结皮生长的影响

作  者：
吉雪花;王露洁;庞胜群
单  位：
石河子大学农学院
关键词：
苔藓结皮;蛇麻黄;浸提液;人工培养;化感作用;呼吸速率
摘  要：
苔藓结皮是生物土壤结皮的高级阶段,是古尔班通古特沙漠重要的地被景观,在防风固沙方面发挥着重要的生态作用。利用生物结皮人工固沙已成为干旱区沙漠环境保护的重要举措,受到了广泛关注。研究分别以水和乙醇浸提蛇麻黄叶片、根系、根际土,通过对不同浸提液培养下苔藓结皮的生长变化、呼吸速率比较,探索苔藓结皮大量分布在蛇麻黄灌丛下的机制。结果表明水和乙醇提取的蛇麻黄浸提液对苔藓结皮的叶绿素含量、株高、植株密度等生长指标均有显著的抑制作用,尤其是叶片浸提液的抑制程度更高;呼吸变化表明各浸提液处理均提高了苔藓结皮的呼吸速率,促进了CO_2的释放,并且水浸提液培养的苔藓呼吸速率大于乙醇浸提液培养的。生长和呼吸变化结果均表明古尔班通古特沙漠蛇麻黄对苔藓结皮的生长产生了化感作用,苔藓结皮大量分布在蛇麻黄灌丛下,与蛇麻黄的叶片、根系浸提物无显著相关,应该与灌丛下土壤水分较高有关。
译  名：
Effect of Ephedra distachya extracts on moss crust growth
作  者：
JI Xue-hua;WANG Lu-jie;PANG Sheng-qun;Agricultural College of Shihezi University;
关键词：
moss crust;;Ephedra distachya;;extract solution;;cultivation;;allelopathy;;respiration
摘  要：
Moss crust is the advanced stage of biological soil crusts and plays a vital role in the prevention of soil erosion and sand stabilization. In recent years,a lot of attention has been paid to these crusts because as a major component of desert vegetation,the ecology and function of biological soil crusts is crucial. In this study,distilled water and ethanol were used to extract different parts of Ephedra distachya(leaf,root and rhizosphere soil),and the extracts solution were added to glass dishes which had been filled with desert sand soil and moss fragments which were then cultivated. Growth indicators such as chlorophyll content,moss density,height and respiration were measured. The results showed that both water and ethanol extracts inhibited moss growth. As for different parts of extracts,leaf extracts showed stronger inhibition than root and rhizosphere soil. Respiration rate indicated that E. distachya extracts promoted CO_2 release from the moss crust,which resulted in the crust becoming sparse with any moss present being small. Compared with ethanol,moss crusts respiration treated with water extracts solution increased much more. The results suggest that there is an allelopathic effect from E. distachya on moss crust.

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