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首页> 外文期刊>土壤圈（英文版） >Impact of Soil Fumigation Practices on Soil Nematodes and Microbial Biomass
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Impact of Soil Fumigation Practices on Soil Nematodes and Microbial Biomass

机译：熏蒸方式对土壤线虫和微生物生物量的影响

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摘要

This study was designed to understand the impact of methyl bromide (MB) (CH3Br) and its alternatives on both free-living and root-knot nematodes in the soil. A randomized complete block experiment with six treatments and 4 replicates (each replicate in a separate greenhouse) was established in Qingzhou, Shandong Province, China. In addition to MB and untreated control (CK) treatments there were four alternative soil fumigation practices including MB+virtually impermeable films (VIF), metam sodium (MS), MS +VIF and soil solarization combined with selected biological control agents (SS+BCA). Two tomato (Lycopersicum esculentum Mill.) cultivars, cv. Maofen-802 from the Xian Institute of Vegetable Science, China, and cv. AF179 Brillante from the Israeli Hazera Quality Seeds, were selected as test crops. The results indicated that Rhabditidae was the most dominant population with percentage abundance as high as 85% of the total number of identified free-living nematodes, followed by that of Cephalobidae. Methyl bromide and its alternatives except for the non-chemical SS+BCA treatment controlled the target pest, root-knot nematodes. Also, the impact of the three chemical alternatives on free-living nematode number and functional group abundance was similar to the impact associated with a typical methyl bromide application. Chemical fumigation practices, especially that with MB, significantly reduced the number of nematodes in the soil and simultaneously significantly reduced the number of nematode genera thereby reducing nematode diversity. All the four soil chemical fumigation activities decreased soil microbial biomass and had an obvious initial impact on microorganism biomass. Furthermore, both plant-parasitic and fungivore nematodes were positively correlated with soil microbial biomass.
机译：这项研究旨在了解甲基溴（MB）（CH3Br）及其替代物对土壤中自由活动和根结线虫的影响。在中国山东省青州市建立了一个随机的，完整的试验，该试验有六种处理方法，一式四份（每个重复在一个独立的温室中）。除MB和未经处理的对照（CK）处理外，还有四种替代的土壤熏蒸方法，包括MB +天然防渗膜（VIF），间位钠（MS），MS + VIF和土壤日光化与精选的生物防治剂（SS + BCA） ）。两个番茄（Lycopersicum esculentum Mill。）品种，简历。西安蔬菜科学研究所的Maofen-802，简历。以色列Hazera优质种子的AF179 Brillante被选作试验作物。结果表明，Rhabditidae是最主要的种群，其丰度百分比高达已发现的自由生活线虫总数的85％，其次是Cephalobidae。除非化学SS + BCA处理外，甲基溴及其替代品可控制目标害虫根结线虫。同样，这三种化学替代品对自由活动线虫数量和官能团丰度的影响与典型的甲基溴应用相关。化学熏蒸方法，特别是使用甲基溴的化学熏蒸方法，可显着减少土壤中线虫的数量，同时可显着减少线虫属的数量，从而减少线虫的多样性。四种土壤化学熏蒸活动均降低了土壤微生物量，并对微生物量产生了明显的初步影响。此外，植物寄生线虫和真菌线虫均与土壤微生物量呈正相关。

著录项

  • 来源
    《土壤圈（英文版）》 |2004年第3期|387-393|共7页
  • 作者

    CAO Zhi-Ping; YU Yong-Li; CHEN Guo-Kang; R. DAWSON;

  • 作者单位

    Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University, Beijing 100094 (China);

    Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University, Beijing 100094 (China);

    Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University, Beijing 100094 (China);

    Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University, Beijing 100094 (China);

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 农业基础科学;
  • 关键词

    methyl bromide; microbial biomass; nematode; soil fumigation;

    机译：甲基溴;微生物量;线虫;土壤熏蒸;
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