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首页> 外文期刊>Applied Soil Ecology >Biochar amendment ameliorates soil properties and promotes Miscanthus growth in a coastal saline-alkali soil
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Biochar amendment ameliorates soil properties and promotes Miscanthus growth in a coastal saline-alkali soil

机译：生物炭修正案可改善土壤性质，促进沿海盐碱土壤中的Miscanthus生长

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摘要

Biochar amendment has been proposed to be as a promising means to improve soil properties and enhance plant productivity in different types of soils. However, biochar application in the improvement of plant productivity in saline-alkali soils has received less attention. In the present study, we carried out a pot experiment in greenhouse to evaluate the effect of biochar amendment on the growth of Miscanthus lutarioriparius, a promising bioenergy crop, in a coastal saline-alkali soil during a 92-day growth period. The biochar was added at 0, 1.0%, 2.0%, 2.5%, 5.0%, and 10.0% (w/w) levels in a random block design with three replicates. The results showed that biochar applications at 2.0% and 2.5% levels significantly promoted Miscanthus growth by ameliorating the physicochemical and biological properties of the saline-alkali soil. The soil moisture, soil organic matter (SOM), nitrate nitrogen (NO3--N), available phosphorus (Olsen-P), and concentrations of potassium (K+), calcium (Ca2+) and magnesium (Mg2+) ions were significantly increased, while soil pH, bulk density, ammonium nitrogen (NH4+-N), sodium (Na+) ion, and exchangeable sodium percentage (ESP) contents were substantially reduced. In addition, the soil bacterial community structure and diversity were substantially shifted after the biochar amendment, which in turn affected soil N and P cycling and improved soil physicochemical properties. Meanwhile, biochar application considerably mitigated the salinity stress to Miscanthus plants by activating anti-oxidative enzymes superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), therefore enhancing the scavenging capability of reactive oxygen species (ROS). Together, our results indicated that biochar amendment effectively promoted Miscanthus growth by ameliorating soil physical, chemical and biological properties, and alleviated salt stress injuries to plants in a coastal saline-alkali soil.
机译：已提出生物炭修正案作为改善土壤性质的有希望，并提高不同类型的土壤的植物生产率。然而，生物炭在盐碱土壤中提高植物生产率的应用受到不太关注。在本研究中，我们在温室中进行了一个盆栽试验，以评估生物炭修订对Miscanthus Lutariariparius，这是一个有前途的生物能量作物，在92天的生长期间的沿海盐碱土壤中的生物能量作物。在随机块设计中加入0,1.0％，2.0％，2.5％，5.0％和10.0％（W / W）水平，其中三个重复。结果表明，通过改善盐碱土壤的物理化学和生物学性能，生物炭应用在2.0％和2.5％水平下显着促进了Miscanthus生长。土壤水分，土壤有机物（SOM），硝酸氮（NO3 - N），可用磷（OLSEN-P）和钾（K +），钙（Ca2 +）和镁（Mg2 +）离子的浓度显着增加，虽然土壤pH，堆积密度，氮气（NH 4 + -N），钠（Na +）离子和可交换的钠百分比（ESP）含量大大降低。此外，在生物炭修正案后，土壤细菌群落结构和多样性基本上转移，这反过来受影响土壤n和p循环和改善土壤理物质性质。同时，通过活化抗氧化酶超氧化物歧化酶（SOD），过氧化物酶（POD）和过氧化氢酶（猫），BioChar申请大大减轻了盐度胁迫对Miscanthus植物，因此提高了活性氧（ROS）的清除能力。我们的结果表明，生物炭修正案通过改善土壤物理，化学和生物学特性，缓解沿海盐碱土壤中的植物盐胁迫损伤有效地促进了Miscanthus生长。

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  • 来源
    《Applied Soil Ecology》 |2020年第1期|共10页
  • 作者

    He Kang; He Guo; Wang Congpeng; Zhang Hongpeng; Xu Yan; Wang Shumin; Kong Yingzhen; Zhou Gongke; Hu Ruibo;

  • 作者单位

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Qingdao Agr Univ Coll Resource &

    Environm Qingdao 266109 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Qingdao Agr Univ Agron Coll Qingdao 266109 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy &

    Bioproc Technol Engn Res Ctr Biomass Resources &

    Environm Key Lab Biofuels Qingdao 266101 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤生态学;
  • 关键词

    Miscanthus; Biochar; Saline-alkali soil; Soil bacterial community;

    机译：miscanthus;生物炭;盐碱土壤;土壤细菌群落;

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