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[1]ZHUANG Xiangting,Qiang Minmin,Ye Chao.Influence of Manure Compost from Intensive Pig Farm on Pollution of Vegetable Soil[J].Research of Soil and Water Conservation,2023,30(05):462-467.[doi:10.13869/j.cnki.rswc.2023.05.037.]

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Influence of Manure Compost from Intensive Pig Farm on Pollution of Vegetable Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 05 Page number: 462-467 Column: Public date: 2023-08-10

Title:: Influence of Manure Compost from Intensive Pig Farm on Pollution of Vegetable Soil

Author(s):: ZHUANG Xiangting¹, Qiang Minmin², Ye Chao¹; (1.College of Animal Engineering, Yangling Vocational and Technical College, Yangling, Shaanxi 712100, China; 2.Power China Northwest Survey Design and Research Institute Co.Ltd., Xi'an 710065, China)

Keywords:: pig manure organic fertilizer; vegetable; nitrate nitrogen; phosphorus; heavy metal

CLC:: X131.3

DOI:: 10.13869/j.cnki.rswc.2023.05.037.

Abstract:: [Objective] This study aims to assess the potential soil pollution risk associated with the utilization of organic fertilizer derived from intensive pig farms in vegetable cultivation, and to provide scientific basis for increasing vegetable yield, improving vegetable quality and reducing soil pollution. [Methods] A field experiment was conducted to investigate the impact of pig manure organic fertilizer on the physicochemical properties and heavy metal contents of vegetable soil. Four treatments were set: CK(pure inorganic fertilizer), M₁(organic fertilizer: 1/3 + inorganic fertilizer: 2/3), M₂(organic fertilizer: 2/3 + inorganic fertilizer: 1/3), and M₃(pure organic fertilizer). [Results] The nitrate nitrogen(NO^-₃-N)content exhibited a decreasing trend from the soil surface to the deeper layers, primarily concentrated within the 0—40 cm soil layer. The application of a substantial amount of organic fertilizer resulted in minor soil leaching in the upper layer, but no groundwater pollution occurred. Organic fertilizer application increased the availability of phosphorus and water-soluble phosphorus in the surface soil to varying extents, posing a certain risk of phosphorus pollution; however, no significant impact was observed in the deeper soil layers. Heavy metal concentrations, including Cd, Pb, As, Hg, Cr, as well as trace elements like Cu, in both soil and vegetables, complied with safety standards following organic fertilizer application, indicating the absence of soil heavy metal pollution and vegetable quality degradation. Increasing the application rate of organic fertilizer demonstrated the decreasing trend in yield, whereas combining a reduced amount of organic fertilizer with decreased chemical fertilizer application(M₁)significantly increased vegetable yield. [Conclusion] It is recommended to employ a combination of chemical fertilizer and appropriate organic fertilizer in vegetable cultivation, leveraging technology to achieve multiple objectives such as improvment of vegetable yield, enhancement of quality, and effective prevention and control of soil pollution.

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Last Update: 2023-08-10