1.华中农业大学资源与环境学院,武汉 430070
2.浙江省农业科学院环境资源与土壤肥料研究所,杭州 310021
明润廷,E-mail: 3258186409@qq.com
伍玉鹏,E-mail: wyp19851205@126.com
收稿:2024-11-21,
纸质出版:2025-07-05
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明润廷,那立苹,万方,等.蚯蚓粪酸土改良剂对酸性土壤酸碱性、肥力及上海青生长的影响评价[J].华中农业大学学报,2025,44(4):58‐67.
MING Runting,NA Liping,WAN Fang,et al.Effects of vermicompost-based acid soil conditioners on acidity-alkalinity and fertility in acidic soil,and growth of Shanghaiqing[J].Journal of Huazhong Agricultural University,2025,44(04):58-67.
明润廷,那立苹,万方,等.蚯蚓粪酸土改良剂对酸性土壤酸碱性、肥力及上海青生长的影响评价[J].华中农业大学学报,2025,44(4):58‐67. DOI: 10.13300/j.cnki.hnlkxb.2025.04.006.
MING Runting,NA Liping,WAN Fang,et al.Effects of vermicompost-based acid soil conditioners on acidity-alkalinity and fertility in acidic soil,and growth of Shanghaiqing[J].Journal of Huazhong Agricultural University,2025,44(04):58-67. DOI: 10.13300/j.cnki.hnlkxb.2025.04.006.
为了强化蚯蚓粪酸土改良性能,通过物理混合和蚯蚓堆肥2种方式在蚯蚓粪(vermicompost,V)中加入高碱度物质牡蛎壳粉(oyster shell powder,M)及生物炭粉(biochar,B),制备蚯蚓粪酸土改良剂B+M+V和BMV,并通过盆栽试验对比B+M+V、BMV与生石灰(quicklime powder,L)、牡蛎壳粉(M)、生物炭(B)、蚯蚓粪(V)等改良剂的施用效果。结果显示:L和M施用下土壤降酸效果最为明显,土壤pH分别提升3.18和2.81个单位,土壤酸碱缓冲容量(soil aicd-base buffering capacity,pHBC)增幅分别为196.81%和236.97%;B+M+V和BMV施用下土壤降酸效果次之,土壤pH分别提升1.35和1.49个单位,土壤酸碱缓冲容量增幅分别为124.97%和104.07%;B和V施用下土壤降酸效果最弱。施用V、B+M+V和BMV均能有效提高土壤肥力,其中B+M+V和BMV施用后土壤有机质分别提升197.53%和222.51%,同时显著提高了土壤有效磷、有效钾含量和CEC值。施用B+M+V和BMV时上海青株高及生物量均显著高于L、M和B处理,并显著提高了上海青吸收N、P和K的累积量。主成分分析评价显示,L和M的降酸能力最强,V、B+M+V和BMV培肥效果最好,B+M+V、BMV施用下上海青的生长状况最好,而B+M+V和BMV在综合改良效果中表现最优。以上结果表明,制备的2种蚯蚓粪酸土改良剂有效结合了纯蚯蚓粪培肥土壤和高碱度物质强降酸能力的优点,能够在酸性土壤改良中发挥优异的综合作用。
Two vermicompost-based acid soil conditioners including B+M+V and BMV were developed by incorporating high-alkalinity substances-oyster shell powder (M) and biochar (B) into vermicompost (V) through physical mixing and vermicomposting to enhance the improvement performance of vermicompost acid soil. A pot experiment was conducted to compare the effects of applying B+M+V,BMV,and other amendments including quicklime (L),oyster shell powder (M),biochar (B),and vermicompost (V). The results showed that the effect of reducing the acid in soil was most significant under the application of L and M,with pH in soil increased by 3.18 and 2.81 units,and soil acid-base buffering capacity (pHBC) increased by 196.81% and 236.97%,respectively. The effect of reducing the acid in soil was the second under the application of B+M+V and BMV,with pH in soil increased by 1.35 and 1.49 units,and pHBC increased by 124.97% and 104.07%,respectively. The effect of reducing the acid in soil was the weakest under the application of B and V. The application of V,B+M+V,and BMV effectively improved the fertility in soil. Among them,the application of B+M+V and BMV increased the content of organic matter in soil by 197.53% and 222.51%,respectively,while significantly increasing the content of available phosphorus and available potassium,and the value of cation exchange capacity (CEC) in soil. The plant height and biomass of Shanghaiqing under the application of B+M+V and BMV were significantly higher than those under the application of L,M,and B. The accumulated absorption of nitrogen,phosphorus,and potassium by Shanghaiqing were significantly increased under the application of B+M+V and BMV. The results of principal component analysis showed that L and M excelled at reducing the acid in soil,V,B+M+V,and BMV were good at improving the fertility in soil,while B+M+V and BMV were effective in promoting the growth of plant. B+M+V and BMV performed the best in the comprehensive improvement of acid soil. It is indicated that the two types of vermicompost-based acid soil conditioners developed effectively combine the advantages of pure vermicompost for improving the fertility in soil and high alkalinity substances for strongly reducing the acid in soil,and can play an excellent comprehensive role in improving acid soils.
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