摘要
定量分析沼液施用对作物产量和土壤肥力及重金属累积的综合效应,旨在明确等氮沼液对作物产量、土壤肥力参数和重金属累积的影响,为优化沼液施用综合管理措施,发挥沼液施用积极效果提供数据参考。运用Meta分析方法将中英文数据库中已发表有关等氮沼液(BS)和全施化肥(CF)处理对作物和土壤肥力影响文献进行检索筛选,共选出有效文献62篇,获得可进行分析的试验数据591组。研究结果表明:与全化肥处理相比施用沼液作物增产7.62%但差异不显著(p=0.07);土壤容重降低6%、总孔隙度增加14%、较大团聚体含量增加10%~20%,差异显著(p<0.05);土壤有机质、总氮、速效磷、阳离子交换量和电导率增幅6%~20%并导致盐分累积加剧(p<0.05);土壤脲酶、蔗糖酶和磷酸酶活性及微生物碳氮含量、香农指数和辛普森指数增幅6%~21%(p<0.001);土壤Cu、Zn和As含量比全化肥(CF)处理显著增加10%~18%。沼液施用对作物增产和土壤肥力提升显著正效应,需要考虑沼液施用年限、土壤类型、作物种类,严格控制施用量降低盐分和重金属累积风险,实现沼液安全高效利用。
This research is to analyze quantitatively the effects of biogas slurry(BS)application on crops yield and soil fertility and heavy metal accumulation in crop-soil system,so as to clarify the effects of BS with equivalent amount of nitrogen(N)fertilizer on crops yield,soil fertility parameters and heavy metal accumulation,which could provide data reference for optimizing the comprehensive management measures and exerting the positive effect of BS on crop-soil system.A meta-analysis was performed to search and screen the published literatures about the effect of BS and chemical fertilizer(CF)treatment on crops yield and soil fertility in Chinese-English document databases,and the database included 62 related studies and 591 pairs of experimental data.The results showed that crops yield increased by 7.62%,but the differences between BS and CF treatment were not significant(p=0.07);Compared with the CF treatment,soil bulk density in BS treatment decreased by 6% while the total porosity in soil increased by 14%and the larger aggregates contents increased significantly(p<0.05).Under BS treatment,soil organic matter,total nitrogen,available phosphorus,cation exchange and conductivity were increased by 6%~20%,and the salt content was to some extent accumulated in topsoil(p<0.05).Soil urease,sucrase and phosphatase activities,and soil microbial carbon and nitrogen content,and Shannon index and Simpson increased by 6%~21%(p<0.001).Compared with the CF treatment,soil Cu,Zn and As concentration in BS treatment were significantly increased range from 10% to 18%,respectively.Generally,the BS application remarkably enhanced crops yield and soil fertility,and more considerations should be taken on the BS application durations,soil types,crop varieties and strictly controls and rationally applies to reduce soil salinity and heavy metal accumulation risks,thus achieving BS efficient and safe utilization.
作者
王志刚
韩雪
徐少奇
魏雨泉
刘运平
裘浪
宋潇
李伟
王婷
郭立月
WANG Zhigang;HAN Xue;XU Shaoqi;WEI Yuquan;LIU Yunping;QIU Lang;SONG Xiao;LI Wei;WANG Ting;GUO Liyue(Beijing Dabeinong Technology Group Co Ltd,Beijing 100095,China;Beijing Orient Landscape&Environment Co Ltd,Beijing 100015,China;College of Resource and Environment,China Agricultural University,Beijing 100093,China;School of Environment and Surveying Engineering,Suzhou University,Suzhou 234000,China;Institute of Botany,the Chinese Academy of Sciences,Beijing 100093,China)
出处
《中国沼气》
CAS
2023年第4期3-10,共8页
China Biogas
基金
企业自主科技创新项目-规模化猪场种养结合安全高效模式研究与示范(DBN0059)。
作者简介
王志刚(1982-),男,回族,河北怀来人,高级工程师,主要研究方向为农业废弃物资源化利用,E-mail:wzg6818691@126.com;通信作者:郭立月,E-mail:guoliyue6789@126.com。
