脱碳气化渣基土壤调理制剂对土壤养分和羊草生长的影响  

Effects of Decarbonized Gasification Slag-Based Soil Conditioner on Soil Nutrients and Growth of Leymus chinensis

作　　者：朱占荣 马泳波 边江东 张正 艾锋 杨航 曹虎生 李强 ZHU Zhanrong;MA Yongbo;BIAN Jiangdong;ZHANG Zheng;AI Feng;YANG Hang;CAO Husheng;LI Qiang(Shaanxi Province 185 Coalfield Geology Co.,Ltd,Yulin 719000,China;Yulin University,Shaanxi Key Laboratory of Ecological Restoration of Northern Shaanxi Mining Areas,Yulin 719000,China)

机构地区：[1]陕西省一八五煤田地质有限公司,陕西榆林719000 [2]榆林学院陕西省陕北矿区生态修复重点实验室,陕西榆林719000

出　　处：《山西农业科学》2024年第5期52-59,共8页Journal of Shanxi Agricultural Sciences

基　　金：陕西省煤田地质集团有限公司创新能力支撑项目(SMDZ-2022CX-4);国家重点研发计划(2022YFF1300802);国家自然科学基金项目(42267071);陕西省公益性地质调查项目(2023-12);陕西省青年创新团队项目(2023-63);陕西省技术创新引导专项(2024ZC-YYDP-58)。

摘　　要：脱碳气化渣是煤气化渣经浮选提取残碳后的多孔型固体废弃物,目前主要通过制成脱碳气化渣基土壤调理制剂用于土壤改良,以实现废弃物再利用。为了研究脱碳气化渣基土壤调理制剂对沙地土壤性质和牧草生长的影响,采用田间小区试验,以羊草为指示作物,设置5个脱碳气化渣基土壤调理制剂施加量,分别为0(CK)、15(SF1)、30(SF2)、60(SF3)、120 t/hm^(2)(SF4),并对沙地土壤理化性质、羊草生理生化指标及品质进行分析。结果表明,脱碳气化渣基土壤调理制剂能够有效改善土壤养分供给能力,添加脱碳气化渣基土壤调理制剂的处理土壤有机质、碱解氮和有效磷含量较CK增幅分别为8.95%~76.96%、4.95%~46.59%和5.80%~105.80%,其中,SF4处理的土壤有机质、碱解氮和有效磷含量显著高于其他处理。与CK相比,添加脱碳气化渣基土壤调理制剂的处理羊草地上生物量和成熟期株高增幅分别为31.52%~113.16%和7.10%~28.90%;添加脱碳气化渣基土壤调理制剂的处理羊草粗蛋白和粗脂肪含量分别增加29.26%~64.36%和8.74%~24.84%,其中,SF4处理增幅最大,粗蛋白和粗脂肪含量分别达73.70、117.10 g/kg。综上,沙土中添加120 t/hm^(2)的脱碳气化渣基土壤调理制剂不仅能够显著调控土壤养分有效性,而且能有效促进沙地羊草生物量的有效积累,为最佳添加量。Decarbonization gasification slag is a porous solid waste obtained by flotation extraction of residual carbon from coal gasification slag.At present,it is generally used to produce decarbonization gasification slag-based soil conditioner for soil improvement to achieve waste reuse.In order to study effects of decarbonized gasification slag-based soil conditioner on soil properties and growth of forage grass,in this study,using field plot test,and soil nutrients,taking Leymus chinensis as the indicate crop,five appication levels of decarbonized gasification slag-based soil conditioner such as 0(CK),15(SF1),30(SF2),60(SF3),and 120 t/ha(SF4)were set,and physical and chemical properties of sandy soil,physiological and biochemical indexes and quality of Leymus chinensis were analyzed.The results showed that decarbonized gasification slag-based soil conditioner could effectively improve soil nutrient supply capacity,the contents of soil organic matter,alkaline hydrolyzed nitrogen,and available phosphorus in soil of the treatments with addition of decarbonized gasification slag-based soil conditioner increased by 8.95%-76.96%,4.95%-46.59%,and 5.80%-105.80%compared to those in CK,respectively.The contents of soil organic matter,alkaline hydrolyzed nitrogen,and available phosphorus in the treatment SF4 were significantly higher than those in other treatments.Compared to CK,the aboveground biomass and the plant height at maturity stage of Leymus chinensis in the treatments with addition of decarbonized gasification slag-based soil conditioner increased by 31.52%-113.16%and 7.10%-28.90%,respectively.The contents of crude protein and crude fat of Leymus chinensis in the additon treatments increased by 29.26%-64.36%and 8.74%-24.84%,respectively.The increase rate of the indexes in the treatment SF4 was the highest,and the contents of crude protein and crude fat reached to 73.70 and 117.10 g/kg.In conclusion,the treatment SF4 could not only significantly regulate the effectiveness of soil nutrients,but also promote the effectiv

关 键 词：脱碳气化渣 土壤理化性质 羊草 生物量 土壤调理制剂 

分 类 号：X705[环境科学与工程—环境工程]