ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

土壤低含量鉛時冬小麥幼苗根際微生物群落的變化
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學(xué)基金資助項目(31000222、31270665)和中央高?;究蒲袠I(yè)務(wù)費專項資金資助項目(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
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    采用土壤盆栽試驗法研究了土壤低含量鉛(Pb)(質(zhì)量比小于300 mg/kg干土)對冬小麥幼苗根際微生物的影響特征,。與對照相比,,幼苗生長3周和7周時,,低含量Pb對細(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3周,、7周和12周時,,低含量Pb對真菌數(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,,與對照相比,低含量Pb極顯著(p<0.01)抑制放線菌數(shù)量增殖,。幼苗生長3周時,,真菌數(shù)量與Pb含量極顯著(p<0.01)相關(guān);7周時,,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,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