本文關(guān)鍵詞：再生水灌溉綠地的環(huán)境影響研究　出處：《中國(guó)礦業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 再生水 綠地灌溉 地下水 土壤養(yǎng)分 植物生理特性 微生物種群密度

【摘要】：作為可替代水源,再生水利用可以有效地緩解水資源的短缺。目前,再生水主要回用于工業(yè)、農(nóng)灌、景觀和城市雜用水等低質(zhì)水方面。但是,城市再生水水質(zhì)復(fù)雜,作為綠化用水存在一定風(fēng)險(xiǎn)。所以研究再生水作為綠地灌溉用水對(duì)土壤、植物、微生物及地下水的影響十分必要。通過試驗(yàn)研究,得到以下結(jié)論:(1)在設(shè)定的灌溉強(qiáng)度下,再生水滲濾液中的TN濃度、TP濃度、TDS濃度和NO3--N濃度均高于自來水灌溉下滲濾液中的濃度,并且試驗(yàn)用再生水的使用不會(huì)引起地下水污染。(2)再生水灌溉根系層(0-20 cm)土壤的有機(jī)質(zhì)、堿解氮含量影響不顯著,對(duì)有效磷、速效鉀含量影響顯著;對(duì)非根系層(20-40 cm)土壤的有機(jī)質(zhì)含量影響不顯著,對(duì)堿解氮、有效磷、速效鉀含量影響顯著。除堿解氮有在根系層富集、向下顯著減少的變化趨勢(shì)之外,有機(jī)質(zhì)、有效磷及速效鉀沒有明顯的富集、驟減、分層現(xiàn)象。(3)再生水灌溉下的四種植物的葉綠素均高于自來水灌溉條件的四種植物的葉綠素,說明再生水的使用可以促進(jìn)沿階草、紫花酢漿草、高羊茅和鳶尾這四種植物的葉綠素含量的增加,有利于這四種植物的光合作用。(4)再生水灌溉量為48 L之前,四種植物的細(xì)胞膜相對(duì)透性均有增大,說明在一定程度上再生水有利于植物抗逆性的增強(qiáng),但之后對(duì)植物的抗逆性有減弱作用。(5)再生水的灌溉對(duì)沿階草根系活力的影響不顯著,但是可以顯著地有效地促進(jìn)紫花酢漿草根系活力的增加;在一定范圍內(nèi),可以在一定程度上增加高羊茅和鳶尾的根系活力。(6)再生水的灌溉對(duì)植物根際土壤中細(xì)菌、真菌、放線菌種群密度有一定影響,但是影響不顯著。氣候和降水是影響細(xì)菌種群密度變化的主要原因,而植物根系土壤含水率、土壤溫度等是影響真菌和放線菌種群密度變化的主要原因。
[Abstract]:As an alternative water source, reclaimed water utilization can effectively alleviate the shortage of water resources. At present, reclaimed water is mainly used in low quality water such as industry, agricultural irrigation, landscape and urban miscellaneous water. The water quality of urban reclaimed water is complex and there are some risks as green water. So it is necessary to study the effect of reclaimed water as irrigation water on soil, plants, microorganisms and groundwater. Under the given irrigation intensity, the TN concentration, TP concentration, TDs concentration and NO3--N concentration in the leachate of reclaimed water were higher than those in the leachate under tap water irrigation. And the use of experimental reclaimed water will not cause groundwater pollution. 2) reclaimed water irrigation roots layer 0-20 cm) soil organic matter, alkaline nitrogen content has no significant effect on available phosphorus. The effect of available potassium content was significant. There was no significant effect on soil organic matter content in non-root layer (20-40 cm), but significant effect on alkali-hydrolyzed nitrogen, available phosphorus and available potassium. However, the organic matter, available phosphorus and available potassium were not significantly enriched and sharply decreased. Stratification phenomenon. (3) the chlorophyll of the four plants irrigated with reclaimed water was higher than that of the four plants under tap water irrigation, which indicated that the use of recycled water could promote the utilization of Oxalis arbusci and Oxalis lanceolata. The increase of chlorophyll content in tall fescue and iris was beneficial to the photosynthesis of these four plants. The results showed that to some extent, reclaimed water was beneficial to the enhancement of plant stress resistance, but later had a weakened effect on plant resistance. 5) the irrigation of regenerated water had no significant effect on the root activity along the grass. However, the root activity of Oxalis lanceolata could be increased significantly. In a certain range, irrigation can increase the root activity of tall fescue and iris to a certain extent) the irrigation of reclaimed water has a certain effect on the population density of bacteria, fungi and actinomycetes in the rhizosphere soil of plants. However, climate and precipitation are the main reasons for the change of bacterial population density, while the soil moisture content and soil temperature of plant roots are the main reasons for the change of population density of fungi and actinomycetes.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X703;X820.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 韓烈保,王昌俊,蘇德榮,蔣艷靈,徐君,周軍;不同水質(zhì)灌溉下綠地養(yǎng)分積累及其比較[J];北京林業(yè)大學(xué)學(xué)報(bào);2005年06期

2 陳雁;李樹華;;再生水對(duì)園林植物生長(zhǎng)影響的研究[J];灌溉排水學(xué)報(bào);2008年02期

3 陳愛葵;韓瑞宏;李東洋;凌連蓮;羅惠霞;唐上劍;;植物葉片相對(duì)電導(dǎo)率測(cè)定方法比較研究[J];廣東教育學(xué)院學(xué)報(bào);2010年05期

4 王巧環(huán);陳衛(wèi)平;王效科;任玉芬;張燁;;城市綠化草坪再生水灌溉對(duì)地下水水質(zhì)影響研究[J];環(huán)境科學(xué);2012年12期

5 李涌;范傳輝;;城市化背景下徐州市水資源可持續(xù)利用策略研究[J];治淮;2011年12期

相關(guān)碩士學(xué)位論文 前1條

1 趙加瑞;灌溉水質(zhì)對(duì)土壤質(zhì)量的影響[D];西北農(nóng)林科技大學(xué);2008年

，

本文編號(hào)：1361156