不同钝化剂处理对羊肚菌累积重金属的影响

doi:10.14088/j.cnki.issn0439-8114.2024.07.016

摘要/Abstract

摘要： 在试验地施加钝化剂对羊肚菌种植土壤进行单一处理,分析羊肚菌出菇前后土壤pH、土壤全氮和蛋白质含量、土壤全钾、土壤铅和镉含量的变化,比较不同处理对羊肚菌全氮和蛋白质含量、全钾及吸收重金属铅和镉的影响。结果表明,与不施钝化剂相比,各处理均能提高土壤pH。其中,生石灰和羟基磷灰石随着用量的增加,土壤pH较对照分别提高0.15%~17.17%和8.05%~14.89%。生石灰和海泡石处理组对土壤全氮及蛋白质含量有不同程度的提升,而有机膨润土和羟基磷灰石处理组对土壤全氮和蛋白质含量无明显影响;施加钝化剂后羊肚菌全氮含量与未施加钝化剂时相比略有提升,但提升幅度不明显。施加钝化剂后,土壤全钾含量比施加前略微升高;钝化剂的施用量对羊肚菌子实体全钾含量的影响不大。羊肚菌出菇前后经生石灰、羟基磷灰石、海泡石和有机膨润土4种钝化剂处理后均能使土壤中铅和镉含量下降;其中4种钝化剂施加量为0.016%时,出菇前土壤中总Pb含量较对照分别下降91.84%、91.24%、76.94%、10.32%;各钝化剂处理土壤后对羊肚菌子实体Pb含量的影响较Cd明显。综合分析,4种钝化剂的施加对土壤常规理化指标影响不大的情况下,能极大降低土壤中铅和镉的含量,有效阻控羊肚菌对重金属铅和镉的吸收,对于羊肚菌种植区的土壤重金属污染管控具有一定的应用价值。

关键词: 钝化剂, 羊肚菌, 重金属, 阻控

Abstract: A deactivator was applied to the soil of Morchella cultivation in the experimental site, and the changes in soil pH, total nitrogen and protein content, total potassium content, and Pb and Cd content before and after the growth of Morchella were analyzed, the effects of different treatments on the total nitrogen and protein content, total potassium, and the absorption of heavy metal Pb and Cd in Morchella were compared. The results indicated that, compared with no passivation agent, all treatments could increase soil pH. With the increase of the content of quicklime and hydroxyapatite, the soil pH increased by 0.15%~17.17% and 8.05%~14.89% respectively compared to the control. The soil treated with quicklime and sepiolite showed a certain degree of increase in total nitrogen and protein content, but the soil treated with organic bentonite and hydroxyapatite had no significant effect on total nitrogen and protein content. After adding a deactivator, the total nitrogen content of Morchella slightly increased compared to when no deactivator was added, but the increase was not significant. Compared with CK, the total potassium in the soil slightly increased after the application of the additive, but the change was not significant; the passivation agent had little effect on the total potassium content of Morchella. Whether before or after the growth of Morchella, the addition of four deactivators, namely quicklime, hydroxyapatite,sepiolite, and organic bentonite, could reduce the content of Pb and Cd in soil. When the addition of four deactivators was 0.016%, the total Pb content in the soil before the growth of Morchella decreased by 91.84%, 91.24%, 76.94% and 10.32% compared to the control. The effect of soil treated with passivators on the Pb of Morchella was more significant than that of Cd. The comprehensive analysis indicated that the application of four additives could greatly reduce soil Pb and Cd and effectively control the enrichment of Pb and Cd by Morchella, while having little effect on conventional soil physical and chemical indicators. The four additives had certain application value for the control of soil heavy metal pollution in the cultivation area of Morchella.

Key words: passivation agent, Morchella, heavy metal, control

中图分类号:

李浪, 吴克华, 刘妮, 吴应海, 杨超. 不同钝化剂处理对羊肚菌累积重金属的影响[J]. 湖北农业科学, 2024, 63(7): 98-104.

LI Lang, WU Ke-hua, LIU Ni, WU Ying-hai, YANG Chao. The effect of different passivation agents on the accumulation of heavy metals in Morchella[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(7): 98-104.

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