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

根際促生細(xì)菌應(yīng)用方式下金銀花生長與根際環(huán)境特征
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目(31570614)和山東省科技發(fā)展計(jì)劃項(xiàng)目(2010GSF10621,、2014GNC113006)


Lonicera japonica Thunb. Growth and Its Rhizosphere Environment Characteristics with Application of Plant Growthpromoting Rhizobacteria
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:

    為提高植物根際促生細(xì)菌在干旱環(huán)境下的應(yīng)用效果,以Bacillus cereus DZ1為供試菌株,,探討了清水稀釋和豆芽汁營養(yǎng)液稀釋處理下其在交聯(lián)聚丙烯酰胺(CLP)中的存活特征,然后通過金銀花造林實(shí)驗(yàn),研究了接種B. subtilis DZ1(PGPR),、施用CLP(CLP),、接種B. subtilis DZ1并混施CLP(C-P)和CLP-PGPR凝膠(CPG)對(duì)植物生長及根際環(huán)境微生物特征的影響。結(jié)果表明,同清水稀釋處理相比,,豆芽汁營養(yǎng)液稀釋處理CLP中的有效活菌數(shù)量顯著提高19.45%~664.05%,,CLP可以作為PGPR的吸附載體。同PGPR處理相比,,CPG處理根系分泌物中的氨基酸總量,、有機(jī)酸總量和總糖含量分別提高37.36%、30.04%和8.18%,;直接接種B. cereus DZ1對(duì)根際土壤微生物量碳影響較小,,但CPG處理顯著提高了微生物量碳含量,并明顯增強(qiáng)了土壤微生物呼吸作用,,其微生物呼吸速率較PGPR,、CLP、C-P和CK分別高出18.02%,、9.93%,、8.56%和18.91%;CPG處理還降低了代謝熵,,與另外4個(gè)處理相比其下降幅度分別為12.74%,、7.62%、8.02%和14.02%,。無論B. cereus DZ1何種接種方式均對(duì)金銀花的造林成活率影響不顯著,,但CPG處理顯著增加了植物的干物質(zhì)積累量,其葉片相對(duì)含水率較C-P處理顯著增加10.34%,,而相對(duì)電導(dǎo)率降低9.70%,。可見,,CLP-PGPR凝膠方式更有利于接種微生物的定殖存活,,可改善金銀花根際土壤的微生態(tài)環(huán)境,增強(qiáng)植物干旱耐受性的同時(shí)促進(jìn)植物生長,。

    Abstract:

    Plant growthpromoting rhizobacteria (PGPR) are beneficial native soil bacteria that colonize the rhizosphere or plant roots and regulate the functional properties of agricultural systems. One of the proposed mechanisms through which PGPR enhances plant growth is the production of plant growth regulators, especially cytokinin. However, little information is available regarding cytokininproducing PGPR inoculation on growth and water stress consistence of Lonicera japonica Thunb. seedlings. Therefore, a bacterial strain with high cytokinin production and known positive effects on plant growth was selected for use in present investigation. Crosslinked polyacrylamide is a widely studied superabsorbent polymer with segments of hydrophilic groups that can absorb and retain liquids, with the absorbed water it is difficult to remove even under pressure. In addition, because of the water absorbing properties of these macromolecules, crosslinked polyacrylamide were used in a wide range of applications in agriculture and forestry. Firstly, an inoculation experiment was conducted to determine whether crosslinked polyacrylamide could be used as carrier for PGPR by inoculating Bacillus cereus DZ1. And then, a Lonicera japonica Thunb. afforestation experiment, including five treatments, i.[KG-*3]e. PGPR (B. subtilis DZ1 inoculation alone), CLP (crosslinked polyacrylamide was applied alone), C-P (B. subtilis inoculation with CLP), CPG (gel was made of PGPR and CLP), and CK (neither B. subtilis nor CLP was applied) was conducted. The experiment was to evaluate the effect of different ways of PGPR application on Lonicera japonica Thunb. growth and microbial characteristics in rhizosphere soils. Results indicated that compared with the diluted water treatment, the number of effective viable bacteria of bean sprout juice dilution treatment in crosslinked polyacrylamide was significantly increased by 19.45%~664.05%, which meant that CLP can be used as an carrier for B. subtilis DZ1. The root exudates, namely amino acids, organic acids and total sugars in CPG treated Lonicera japonica Thunb. rhizosphere soils were significantly increased by 37.36%, 30.04% and 8.18% than those in PGPR treatment. Although B. subtilis DZ1 inoculation alone had no significant effect on microbial biomass carbon contents, the CPG treatment evidently increased microbial biomass carbon and significantly enhanced microbial respiration, showing 18.02%, 9.93%, 8.56% and 18.91% increases in microbial respiration rate over the treatments of PGPR, CLP, C-P and CK, respectively. At the same time, the metabolic quotient was reduced by the CPG treatment, demonstrating 12.74%, 7.62%, 8.02% and 14.02% decreases, respectively. Besides, the CPG treatment achieved the highest Simpson index, however the lowest Shannon and McIntosh index among all the treatments. CPG treatment had no significant effect on afforestation survival rate, it was beneficial to the shoot and root dry matter accumulation of Lonicera japonica Thunb. Compared with C-P treatment, CPG treatment increased the relative water content of Lonicera japonica Thunb. leaves by 10.34%, whereas decreased the relative electric conductance by 9.70%. As a result, the CLP-PGPR gel can alleviate the drought stress and interfere with the suppression of plant growth through regulating the micro ecological environment of Lonicera japonica Thunb. rhizosphere soil, showing a real potential to perform as a drought stress inhibitor in arid environments.

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

劉方春,馬海林,杜振宇,馬丙堯,楊慶山,井大煒.根際促生細(xì)菌應(yīng)用方式下金銀花生長與根際環(huán)境特征[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2016,47(11):163-171. Liu Fangchun, Ma Hailin, Du Zhenyu, Ma Bingyao, Yang Qingshan, Jing Dawei. Lonicera japonica Thunb. Growth and Its Rhizosphere Environment Characteristics with Application of Plant Growthpromoting Rhizobacteria[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(11):163-171.

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:2016-07-14
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2016-11-10
  • 出版日期:
文章二維碼