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首页> 外文期刊>Environmental Pollution >Effects of myclobutanil on soil microbial biomass, respiration, and soil nitrogen transformations
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Effects of myclobutanil on soil microbial biomass, respiration, and soil nitrogen transformations

机译：霉菌丁胺对土壤微生物量，呼吸和土壤氮转化的影响

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摘要

A 3-month-long experiment was conducted to ascertain the effects of different concentrations of myclobutanil (0.4 mg kg(-1) soil [T1]; 1.2 mg kg(-1) soil [T3]; and 4 mg kg(-1) soil [T10]) on soil microbial biomass, respiration, and soil nitrogen transformaticins using two typical agricultural soils (Henan fluvoaquic soil and Shanxi cinnamon soil). Soil was sampled after 7, 15, 30, 60, and 90 days of incubation to determine myclobutanil concentration and microbial parameters: soil basal respiration (RB), microbial biomass carbon (MBC) and nitrogen (MBN), NO3--N and NH4+-N concentrations, and gene abundance of total bacteria, N-2-fixing bacteria, fungi, ammonia-oxidizing archaea (AOA), and ammonia-oxidizing bacteria (AOB). The half-lives of the different doses of myclobutanil varied from 20.3 to 69.3 d in the Henan soil and from 99 to 138.6 d in the Shanxi soil. In the Henan soil, the three treatments caused different degrees of short-term inhibition of R-B and MBC, NH4+-N, and gene abundance of total bacteria, fungi, N-2-fixing bacteria, AOA, and AOB, with the exception of a brief increase in N-3(-)-N content during the T10 treatment. The MBN (immobilized nitrogen) was not affected. In the Shanxi soil, MBC, the populations of total bacteria, fungi, and N2-fixing bacteria, and NH+4 N concentration were not significantly affected by myclobutanil. The RB and MBN were decreased transitorily in the T10 treatment. The NO3--N concentrations and the abundance of both AOA and AOB were erratically stimulated by myclobutanil. Regardless of whether stimulation or suppression occurred, the effects of myclobutanil on the two soil types were short term. In summary, myclobutanil had no long-term negative effects on the soil microbial biomass, respiration, and soil nitrogen transformations in the two types of soil, even at 10-fold the recommended dosage. (C) 2015 Elsevier Ltd. All rights reserved.
机译：进行了为期3个月的实验，以确定不同浓度的霉菌丁（0.4 mg kg（-1）土壤[T1]； 1.2 mg kg（-1）土壤[T3]和4 mg kg（-1 ）土壤[T10]）上的土壤微生物生物量，呼吸作用和土壤氮转化素，使用两种典型的农业土壤（河南潮土和山西肉桂土）。孵育7、15、30、60和90天后对土壤取样，以测定菌丝素浓度和微生物参数：土壤基础呼吸（RB），微生物生物量碳（MBC）和氮（MBN），NO3--N和NH4 + -N浓度以及总细菌，N-2固定细菌，真菌，氨氧化古细菌（AOA）和氨氧化细菌（AOB）的基因丰度。河南土壤中不同剂量的霉菌丁的半衰期从20.3到69.3 d，山西土壤中从99到138.6 d。在河南土壤中，这三种处理对RB和MBC，NH4 + -N的短期抑制程度不同，对总细菌，真菌，N-2固定细菌，AOA和AOB的基因丰度有不同程度的抑制作用。 T10处理期间N-3（-）-N含量短暂增加。 MBN（固定氮）不受影响。在山西土壤中，MBC对霉菌丁腈的影响不大，总细菌，真菌和固氮细菌的数量以及NH + 4 N的浓度均没有显着影响。在T10处理中，RB和MBN暂时减少。霉菌丁腈对NO3--N浓度和AOA和AOB的含量都产生了不稳定的刺激。不论是否进行刺激或抑制，霉菌丁对两种土壤类型的影响都是短期的。总之，即使在推荐剂量的10倍下，霉菌丁腈对两种类型土壤的微生物微生物量，呼吸作用和土壤氮转化也没有长期的负面影响。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2016年第janaptab期|811-820|共10页
  • 作者

    Ju Chao; Xu Jun; Wu Xiaohu; Dong Fengshou; Liu Xingang; Zheng Yongquan;

  • 作者单位

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pest, Beijing 100193, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Myclobutanil; Soil microbial biomass; Soil respiration; Soil nitrogen transformations; Ammonia-oxidizing archaea; Ammonia-oxidizing bacteria;

    机译：霉菌丁;土壤微生物生物量;土壤呼吸;土壤氮转化;氨氧化古细菌;氨氧化细菌;

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