本文選題：城市污泥 + 土壤肥力��； 參考：《中國土壤與肥料》2017年05期

【摘要】：以小麥-玉米輪作體系下的沙質(zhì)潮土為研究對象,選用經(jīng)無害化處理后的城市污泥產(chǎn)物,通過2013~2015年田間定位試驗,研究了不同城市污泥施用量對土壤肥力的影響,以期為城市污泥資源化利用提供理論基礎(chǔ)和技術(shù)依據(jù)。設(shè)置單施化肥(CK)、CK+污泥15 t·hm~(-2)(CS1)、CK+污泥30 t·hm~(-2)(CS2)和CK+污泥45 t·hm~(-2)(CS3)共4個處理。主要研究結(jié)果如下:(1)連續(xù)定位試驗結(jié)果表明,同一施用量污泥處理的土壤p H值隨施用時間的增加呈下降趨勢;土壤有機質(zhì)(SOM)和養(yǎng)分含量如全氮(TN)、有效磷(AP)和速效鉀(AK)隨施用時間的增長呈上升趨勢;(2)與CK比較,在2015年玉米季施用污泥各處理的土壤p H值顯著降低了0.34~0.83個單位(P0.05),且與污泥施用量呈反比,以高施量污泥45 t·hm~(-2)下降最多;土壤SOM、TN、AP和AK分別顯著提高了52.1%~166.9%、77.3%~177.8%、215.7%~486.3%和167.2%~379.0%(P0.05),且與污泥施用量呈正比,以高施量污泥45 t·hm~(-2)效果最顯著;(3)試驗所用污泥施用量范圍內(nèi)不會造成土壤和植物籽粒重金屬污染,能夠保持土壤環(huán)境健康;(4)與CK比較,施用污泥各處理土壤微生物量碳(MBC)、氮(MBN)含量均顯著提高(P0.05),且與污泥施用量呈正比,并且季節(jié)不同也顯著影響土壤MBC、MBN含量(P0.05);施用污泥能夠顯著提高土壤MBC/MBN(P0.05),說明施用污泥能夠改變土壤微生物群落組成;(5)施用污泥,尤其是高施量污泥45 t·hm~(-2),在保證土壤和植物籽粒質(zhì)量安全下,其土壤培肥效果最優(yōu)。
[Abstract]:The effect of different amount of municipal sludge application on soil fertility was studied by field location test from 2013 to 2015, which was conducted on sandy tidal soil under wheat-maize rotation system. In order to provide theoretical and technical basis for the utilization of municipal sludge. A total of 4 treatments were set up in which CK sludge was applied only for 15 t / hm ~ (-1) and CK _ (30 t / hm ~ (-1) and CK ~ (45 t / hm ~ (-1) ~ (2) C _ (3) respectively. The main results were as follows: (1) the results of continuous location test showed that the pH value of soil treated with the same amount of sludge decreased with the increase of application time. Soil organic matter (SOM), total nitrogen (TNN), available phosphorus (AP) and available potassium (AKK) increased with the application time. In 2015, the soil pH value of sludge treatment decreased significantly by 0.34 ~ 0.83 per unit P _ (0.05), which was inversely proportional to the application rate of sludge, and the highest amount of sludge was 45 t / hm ~ (-2). Soil SOMN, TNAP and AK increased significantly by 52.1% and 166.9%, respectively, and 77.33% and 177.8%, respectively, by 486.3% and 167.2% and 379.0%, respectively, which were in direct proportion to the amount of sludge applied, and the effect of high application amount of sludge was most significant in the range of 45 t hmm-2) the application of sludge did not cause heavy metal pollution in soil and plant grains. Compared with CK, the content of MBCN and MBN of soil microbial biomass increased significantly by applying sludge, and was proportional to the amount of sludge applied. Different seasons also significantly affected the content of MBC / MBN in soil (P 0.05N), and the application of sludge could significantly increase the content of MBC / MBN (P 0.05N), which indicated that the application of sludge could change the composition of soil microbial community. Especially, 45 t / hm ~ (-2) of sludge was applied to ensure the safety of soil and plant grain quality, and the effect of soil fertilization was the best.
【作者單位】： 鄭州市污水凈化有限公司;中國農(nóng)業(yè)科學院農(nóng)業(yè)資源與農(nóng)業(yè)區(qū)劃研究所耕地培育技術(shù)國家工程實驗室;
【基金】：國家自然科學基金項目(21577172,41501322) 國家國際科技合作專項(2015DFA20790) 國家重點基礎(chǔ)研究發(fā)展規(guī)劃(973)項目(2013CB127406) 中央級公益性科研院所專項(1610132016043)
【分類號】：S154.3;S158

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