土壤含水率对羊草构件密度及脯氨酸含量的影响
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吉林大学环境与资源学院,吉林大学环境与资源学院,吉林大学环境与资源学院,吉林大学环境与资源学院

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S812.4

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Effects of Leymus Chinensis Module Density and Proline Content of Soil Moisture
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College of Environment Science and Resources,Jilin University,College of Environment Science and Resources,Jilin University

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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    本文以松嫩平原羊草为研究对象,研究了羊草构件密度及脯氨酸在不同土壤水分梯度下的变化规律。土壤水分梯度分别为 W1:5.81%、W2:11.90%、W3:20.87%、W4:31.83%、W5:58.43%。研究结果显示,羊草各构件密度对土壤水分梯度的响应程度为:芽 (88.63%) > 叶(49.11 %) >分蘖 (44.20 %) > 根 (27.94 %) > 根茎 (21.72 %),根茎变化最为平缓,抗胁迫能力较强,各构件密度在W4梯度下最大。而羊草叶、根茎及根的脯氨酸含量在W3 梯度下最小,分别为 0.6809 mg.g-1DW、0.7626 mg.g-1DW、0.2357 mg.g-1DW,时滞效应使羊草在 W3 梯度下所受胁迫最小,而在 W4 梯度最适合种群生长。说明羊草各构件密度、脯氨酸含量对土壤水分含量的响应程度极显著(p < 0.01)。

    Abstract:

    In this paper, taking in a Leymus chinensis as the research object, the study on variation rules of Leymus chinensis module density and proline in different soil moisture gradient. Soil moisture gradients were W1:5.81%, W211.90%, W3:20.87%, W4:31.83%, W5:58.43%. The results of the study show that, the degree of response of Leymus chinensis each module density on soil water gradient: bud (88.63%) > leaf (49.11%)> tiller (44.20%) > root (27.94%) > rhizome(21.72%), rhizome of change is the most sustained, resistence stress ability moer stronger, each module density maximum in the W4 gradient. And the proline content of Leymus chinensisleaf, rhizome and root in the W3 gradient minimum, were 0.6809 mg.g-1DW, 0.7626 mg.g-1DW, 0.2357 mg.g-1DW, the time lag effect of Leymus chinensis by stress minimum gradient in the W3, while in W4 gradient is most suitable for the growth of population. Illustrate the response of each module density of Leymus chinensis and proline content in soil moisture content significantly (P < 0.01).

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引用本文

刘晓婷,包国章,朱悦,等. 土壤含水率对羊草构件密度及脯氨酸含量的影响[J]. 科学技术与工程, 2015, 15(10): .
LIU Xiao-ting,包国章,Zhu Yue, et al. Effects of Leymus Chinensis Module Density and Proline Content of Soil Moisture[J]. Science Technology and Engineering,2015,15(10).

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历史
  • 收稿日期:2014-11-16
  • 最后修改日期:2014-12-08
  • 录用日期:2014-12-30
  • 在线发布日期: 2015-04-07
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