低压直流电场对沙打旺生长及根系土壤酶活的影响

doi:10.14088/j.cnki.issn0439-8114.2021.08.020

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (8): 102-106.doi: 10.14088/j.cnki.issn0439-8114.2021.08.020

低压直流电场对沙打旺生长及根系土壤酶活的影响

成新艳, 凌梦, 邓流阳, 杜梦琳, 杨滢滢, 王陈, 陈珂

西南科技大学生命科学与工程学院,四川绵阳 621010

收稿日期:2020-05-26 发布日期:2021-05-07
通讯作者: 陈珂,男,副教授,主要从事污染环境生物修复研究,（电话）15808161815（电子信箱）chenke@swust.edu.cn。
作者简介:成新艳（1994-）,女,四川绵阳人,在读硕士研究生,研究方向为植物生理生化与生态修复,（电话）18380592250（电子信箱）850545679@qq.com
基金资助:
四川省“三区”科技人员专项（19ZD3127）; 西南科技大学大学生创新训练项目（S201910619111）

Effects of low-voltage direct current electric field on the growth of Astragalus adsurgens Pall. and soil enzyme activity in root system

CHEN Xin-yan, LING Meng, DENG Liu-yang, DU Meng-lin, YANG Yin-yin, WANG Chen, CHEN Ke

Shool of Lif Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China

Received:2020-05-26 Published:2021-05-07

摘要/Abstract

摘要： 使用不同强度的低压直流电场对沙打旺（Astragalus adsurgens Pall.）幼苗进行处理,加电30 d后测定植物株高、株茎、根长、生物量、叶绿素含量、荧光动力学参数、抗氧化酶活性、根系土壤酶活的变化。结果表明,在沙打旺幼苗的生长过程中,施加0~0.8 V/cm强度的低压直流电场,随着电场强度的增加,阳极区、中间区、阴极区3个区域沙打旺的光化学效率Fv/Fm都有一定程度的提高,且显著高于对照。沙打旺叶绿素a和叶绿素b的含量、抗氧化酶活性（CAT、POD、SOD）、株高、株茎、根长、鲜重、地上生物量和地下生物量均随着电场强度的升高呈低促高抑的趋势。当电场强度为0.2~0.4 V/cm时,不同区域的沙打旺理化指标和土壤酶活各项参数均得到了不同程度的提高,而当电场强度为0.8 V/cm时,沙打旺的相关参数受到了抑制。0.2~0.4 V/cm的电场强度在一定程度上能刺激沙打旺的生长,可能是强化沙打旺幼苗生长的适宜电场强度范围,而0.8 V/cm电场强度则会对沙打旺的生理及其根系土壤造成胁迫,使其无法得到良好的生长。

关键词: 沙打旺（Astragalus adsurgens Pall.）, 直流电场, 生理指标, 土壤酶活

Abstract: The seedlings of Astragalus adsurgens Pall. were treated with low-voltage direct current electric（DC）field of different intensity.The changes of plant height, plant stem, root length, biomass, chlorophyll content, fluorescence kinetics parameters, antioxidant enzyme activities and soil enzyme activities of root system were measured 30 days after adding electricity. The results showed that in the growth process of Astragalus adsurgens Pall. seedlings, the Fv/Fm of seedlings in the three regions of anode, middle and cathode increased to a certain extent with the increase of the electric field intensity when the low-voltage DC field with the intensity of 0~0.8 V/cm was applied, and it was significantly higher than that of the control group （CK）. The contents of chlorophyll a and chlorophyll b, antioxidant enzyme activities （CAT, POD, SOD）, plant height, plant stem, root length, fresh weight, aboveground biomass and underground biomass all showed a trend of low promotion and high inhibition with the increase of electric field intensity. When the electric field intensity was 0.2~0.4 V/cm, the parameters of Astragalus adsurgens Pall. in different areas were improved to different degrees. However, when the electric field intensity was 0.8 V/cm, the parameters of seedlings were inhibited. Therefore, the electric field intensity of 0.2~0.4 V/cmcan stimulate the growth of Astragalus adsurgens Pall. and may be the best range of electric field intensity to strengthen the process of plant restoration to a certain extent, while the electric field intensity of 0.8 V/cmwill cause stress on the physiology and root soil of Astragalus adsurgens Pall. and make it unable to grow well.

Key words: Astragalus adsurgens Pall., direct-current electric field, physio-biochemica lindex, soil enzyme

中图分类号:

Q945

成新艳, 凌梦, 邓流阳, 杜梦琳, 杨滢滢, 王陈, 陈珂. 低压直流电场对沙打旺生长及根系土壤酶活的影响[J]. 湖北农业科学, 2021, 60(8): 102-106.

CHEN Xin-yan, LING Meng, DENG Liu-yang, DU Meng-lin, YANG Yin-yin, WANG Chen, CHEN Ke. Effects of low-voltage direct current electric field on the growth of Astragalus adsurgens Pall. and soil enzyme activity in root system[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(8): 102-106.

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低压直流电场对沙打旺生长及根系土壤酶活的影响

Effects of low-voltage direct current electric field on the growth of Astragalus adsurgens Pall. and soil enzyme activity in root system

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