亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

土壤低含量鉛時(shí)冬小麥幼苗根際微生物群落的變化
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家自然科學(xué)基金資助項(xiàng)目(31000222、31270665)和中央高?;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(CHD2012JC041)


Changes of Microbial Communities in Rhizosphere of Winter Wheat Seedlings under Low Lead Content
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    采用土壤盆栽試驗(yàn)法研究了土壤低含量鉛(Pb)(質(zhì)量比小于300 mg/kg干土)對(duì)冬小麥幼苗根際微生物的影響特征。與對(duì)照相比,幼苗生長(zhǎng)3周和7周時(shí),低含量Pb對(duì)細(xì)菌數(shù)量的平均抑制率分別為16.25%和8.62% (p<0.01);幼苗生長(zhǎng)3周、7周和12周時(shí),低含量Pb對(duì)真菌數(shù)量的平均抑制率分別為34.08%、39.89%和17.49% (p<0.01);7周和12周時(shí),與對(duì)照相比,低含量Pb極顯著(p<0.01)抑制放線菌數(shù)量增殖。幼苗生長(zhǎng)3周時(shí),真菌數(shù)量與Pb含量極顯著(p<0.01)相關(guān);7周時(shí),真菌、放線菌和微生物總數(shù)與Pb含量顯著(p<0.05)相關(guān)。低含量Pb處理下,根際真菌/細(xì)菌比值較對(duì)照顯著降低,微生物代謝功能多樣性變化顯著。研究結(jié)果表明:土壤低含量Pb對(duì)冬小麥幼苗根際土壤微生物數(shù)量及微生物群落結(jié)構(gòu)特征影響顯著。

    Abstract:

    Pot experiments were conducted to investigate the effect of low lead content (<300mg/kg dry soil) on winter wheat seedlings rhizosphere microorganisms. Compared to the control, the number of bacterial decreased significantly (p<0.01) by 16.25% at the third week and by 8.62% at the seventh week, and the number of fungi in low lead content decreased significantly (p<0.01) by an average of 34.08%, 39.89% and 17.49% at the third week, seventh week, and twelfth weeks, respectively. The actinomyces amount in low lead content decreased significantly (p<0.01) at the seventh and twelfth weeks. The correlation between the number of fungi and lead content was significant (p<0.01) at the third week and the number of actinomyces, the fungi and the total microbial had significant (p<0.05) correlation to the lead content at the seventh week. In the three growth stages, fungal/bacterial population ratio decreased evidently and the microbial functional diversity changed evidently in low lead content. In conclusion, soil microbial population and community in the rhizosphere of winter wheat seedlings were affected significantly by low lead content.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

賈夏,董歲明,周春娟.土壤低含量鉛時(shí)冬小麥幼苗根際微生物群落的變化[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(2):103-108,141. Jia Xia, Dong Suiming, Zhou Chunjuan. Changes of Microbial Communities in Rhizosphere of Winter Wheat Seedlings under Low Lead Content[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):103-108,141.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2013-02-04
  • 出版日期:
文章二維碼