【摘要】：為探討再生水灌溉和氮肥施用對(duì)土壤酶活性的影響,采用田間小區(qū)試驗(yàn),以清水不施氮肥和再生水不施氮肥為對(duì)照,研究了4種氮素水平下再生水灌溉對(duì)土壤脲酶活性、蔗糖酶活性、淀粉酶活性和過氧化氫酶活性的變化及生育期土壤礦質(zhì)氮、全氮的盈虧狀況。結(jié)果表明,再生水灌溉提高了土壤脲酶和淀粉酶活性,降低了土壤蔗糖酶和過氧化氫酶活性;不同施氮水平下,再生水灌溉土壤脲酶活性、高氮處理土壤蔗糖酶活性和淀粉酶活性、低氮處理過氧化氫酶活性和番茄收獲后土壤全氮含量均低于清水灌溉處理;相同灌水水質(zhì)下,再生水灌溉施肥處理對(duì)土壤蔗糖酶活性、過氧化氫酶活性起到促進(jìn)作用,對(duì)脲酶和淀粉酶活性有抑制作用,清水灌溉施肥處理對(duì)土壤脲酶活性、蔗糖酶活性起到促進(jìn)作用,對(duì)淀粉酶和過氧化氫活性有抑制作用;再生水灌溉土壤礦質(zhì)氮變化量較清水灌溉顯著提高,而再生水灌溉下施肥處理降低了土壤礦質(zhì)氮變化量。因此,適量減氮并輔以再生水灌溉處理能夠提高土壤供氮能力和自凈能力,增強(qiáng)土壤解毒能力并提升土壤肥力,減少再生水的排放和氮肥用量;不同施氮水平再生水灌溉對(duì)土壤脲酶、蔗糖酶、淀粉酶和過氧化氫酶活性及土壤礦質(zhì)氮含量、全氮含量影響存在極顯著差異。
[Abstract]:In order to study the effect of reclaimed water irrigation and nitrogen fertilizer application on soil enzyme activity, a field plot experiment was conducted to study the effect of regenerated water irrigation on soil urease activity under four nitrogen levels. The changes of sucrase activity, amylase activity and catalase activity and the profit and loss of soil mineral nitrogen and total nitrogen during the growth period. The results showed that the activities of urease and amylase were increased and the activities of sucrase and catalase were decreased after irrigation with regenerated water. Under different nitrogen application levels, the urease activity of regenerated water irrigated soil, the invertase activity and amylase activity of high nitrogen treatment, the catalase activity of low nitrogen treatment and the total nitrogen content of tomato after harvest were lower than that of clear water irrigation. Under the same irrigation water quality, regeneration water irrigation and fertilization treatment promoted soil sucrase activity, catalase activity, inhibited urease and amylase activity, and water irrigated fertilization treatment affected soil urease activity, and water irrigation and fertilization treatment promoted soil invertase activity, catalase activity, urease activity and urease activity. The activity of sucrase was promoted and the activity of amylase and hydrogen peroxide was inhibited. The change of soil mineral nitrogen in reclaimed water irrigation was significantly higher than that in clear water irrigation, and the change of soil mineral nitrogen was decreased by applying fertilizer under reclaimed water irrigation. Therefore, appropriate nitrogen reduction and irrigation with regenerated water can improve soil nitrogen supply capacity and self-purification ability, enhance soil detoxification ability and improve soil fertility, reduce the discharge of regenerated water and nitrogen fertilizer use. There were significant differences in the activities of urease, sucrase, amylase and catalase, the content of mineral nitrogen and the content of total nitrogen in soil under irrigation with different N application levels.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院農(nóng)田灌溉研究所;中國農(nóng)業(yè)科學(xué)院研究生院;中國農(nóng)業(yè)科學(xué)院農(nóng)業(yè)水資源高效安全利用重點(diǎn)開放實(shí)驗(yàn)室;
【基金】：國家高技術(shù)研究發(fā)展計(jì)劃“863”項(xiàng)目(2012AA101404) 國家自然科學(xué)基金面上項(xiàng)目(51479201,51009141)
【分類號(hào)】：S154.2

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊主泉;;再生水灌溉對(duì)旅游區(qū)土壤理化性質(zhì)時(shí)空變化影響特征分析[J];廣東農(nóng)業(yè)科學(xué);2013年06期

2 賈亞斌;;再生水灌溉下農(nóng)田氮素轉(zhuǎn)移規(guī)律研究[J];廣東農(nóng)業(yè)科學(xué);2014年04期

3 張娟;王艷春;;再生水灌溉對(duì)植物根際土壤特性和微生物數(shù)量的影響[J];節(jié)水灌溉;2009年03期

4 商艷玲;李毅;朱德蘭;;再生水灌溉對(duì)土壤斥水性的影響[J];農(nóng)業(yè)工程學(xué)報(bào);2012年21期

5 李中陽;樊向陽;齊學(xué)斌;呂謀超;王和洲;胡超;黃仲冬;趙志娟;李林;;再生水灌溉對(duì)不同類型土壤磷形態(tài)變化的影響[J];水土保持學(xué)報(bào);2014年03期

6 侯賢貴;楊培嶺;任樹梅;;再生水灌溉對(duì)土壤鹽堿性影響的大田試驗(yàn)研究[J];灌溉排水學(xué)報(bào);2009年02期

7 翟建平;王茜;王寶萍;;礦井水再生水灌溉對(duì)土壤性能和土壤微生物影響研究[J];陜西水利;2014年01期

8 陳黛慈;王繼華;關(guān)健飛;夏琳;龔雪;;再生水灌溉對(duì)土壤理化性質(zhì)和可培養(yǎng)微生物群落的影響[J];生態(tài)學(xué)雜志;2014年05期

9 楊林林;楊培嶺;任樹梅;王成志;;再生水灌溉對(duì)土壤理化性質(zhì)影響的試驗(yàn)研究[J];水土保持學(xué)報(bào);2006年02期

10 薛彥東;楊培嶺;任樹梅;蘇艷平;李云開;方延旭;;再生水灌溉對(duì)土壤主要鹽分離子的分布特征及鹽堿化的影響[J];水土保持學(xué)報(bào);2012年02期

相關(guān)碩士學(xué)位論文 前4條

1 商艷玲;再生水灌溉對(duì)土壤水鹽運(yùn)移及斥水性的影響[D];西北農(nóng)林科技大學(xué);2013年

2 劉昆鵬;再生水灌溉地區(qū)氮素在土壤中的運(yùn)移規(guī)律模擬的研究[D];北京工業(yè)大學(xué);2006年

3 陳黛慈;再生水灌溉對(duì)土壤理化性質(zhì)和微生物的影響研究[D];哈爾濱師范大學(xué);2014年

4 林虎;再生水灌溉條件下水分與氮素遷移轉(zhuǎn)化規(guī)律模擬研究[D];中國農(nóng)業(yè)大學(xué);2004年

，

本文編號(hào)：2470612