中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 城市污泥施用对喀斯特石漠化土壤质量的改善 北方园艺 2019 (15) 99-107
Position: Home > Articles > 城市污泥施用对喀斯特石漠化土壤质量的改善 Northern Horticulture 2019 (15) 99-107

城市污泥施用对喀斯特石漠化土壤质量的改善

作  者：
杨丹;李冕;何绍东;管庆丽
单  位：
贵阳学院生物与环境工程学院
关键词：
石漠化;城市污泥;持水性能;土壤养分;土壤微生物生物量
摘  要：
为研究城市污泥施用对喀斯特地区石漠化土壤质量的改良效果,以石漠化土壤和城市污泥为试验材料,采用模拟土壤熟化试验,分析了20%~75%比例的污泥添加对土壤持水性能、养分、重金属含量及微生物生物量的影响.结果表明:随着污泥用量的增加,土壤饱和含水率增加了22.04%~67.07%,持水时间延长了5.19~16.25 d;土壤有机碳、氮、磷含量及微生物生物量也显著增加.但土壤微生物生物量不是随污泥施用比例的增加而增加,在污泥施用比例为20%~35%范围内,土壤微生物生物量显著高于高比例的污泥添加.50%~75%的污泥施用还导致Cd和Zn超过土壤质量标准.因此,适量的城市污泥施用可改善土壤持水性能、提高土壤肥力,以20%~35%比例为宜.
作  者：
YANG Dan;LI Mian;HE Shaodong;GUAN Qingli;College of Biological and Environmental Engineering,Guiyang University;
单  位：
YANG Dan%LI Mian%HE Shaodong%GUAN Qingli%College of Biological and Environmental Engineering,Guiyang University
关键词：
rocky desertification;;municipal sewage sludge;;water-holding capacity;;soil nutrient;;soil microbial biomass
摘  要：
In order to assess the impact of municipal sewage sludge(MSS) on soil quality in Karst rocky desertification regions,a simulated soil ripening experiment was conducted,in which soil sampled in a rocky desertification region and MSS collected from a domestic sewage treatment plant were the test materials.Soil water-holding capacity,nutrient content and soil microbial biomass were analyzed in soils added with 20% to 75% of MSS.The results showed that,as the addition rate of MSS increased,saturated water content of soil increased by 22.04%-67.07%,the water-holding time prolonged 5.19-16.25 days,and soil organic carbon,nitrogen,phosphorus and microbial biomass increased significantly.However,the increase of soil microbial biomass was not proportional to the application dosage of MSS.Soil microbial biomass were obviously higher in soils with 20%-35% MSS addition than that with high proportion of MSS.The contents of Cd and Zn even exceeded the standard of soil quality while added with 50%-75% MSS in soil.Therefore,soil water-holding capacity and fertility in rocky desertification region could be improved with suitable dosage of MSS amendment,and low rate application(20%-35%)would take advantage of such effect.

相似文章

导出引用
计量
文章访问数: 21
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46