Effects of biochar-immobilized Aspergillus niger on the degradation of deltamethrin in tea garden soil

doi:10.16178/j.issn.0528-9017.20240878

Abstract

Abstract:

In this study, the GC-MS determination and analysis of deltamethrin (DM) residues in tea garden soil were carried out by using biochar-immobilized Aspergillus niger treatment technology. The results showed that the DM degradation effect of tea garden soil treated with Aspergillus niger was significantly better than that of the control. The DM degradation effect of tea garden soil treated with biochar-immobilized Aspergillus niger was significantly better than that of free Aspergillus niger. After DM treatment of tea garden soil for 24 hours, the DM residue in soil was the least when the biochar-immobilized Aspergillus niger was applied at a concentration of 30 g·L^-1. The half-life of tea garden soil treated with biochar-immobilized Aspergillus niger was 4.093 d, which was 1.106 d shorter than that of the control. This result provides a good theoretical support for improving the soil environment of tea gardens and promoting the healthy and sustainable development of the tea industry.

Key words: biochar, Aspergillus niger, deltamethrin, tea garden soil

CLC Number:

S482

JIANG Hongying, MA Ling, ZHANG Zhenwu, WU Huixin, XING Chenghua. Effects of biochar-immobilized Aspergillus niger on the degradation of deltamethrin in tea garden soil[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(7): 1603-1606.

Figures/Tables 6

References 13

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处理	黑曲霉菌剂类型	菌剂浓度/(g·L^-1)
A0(CK)	—	—
A11	游离黑曲霉菌剂	10.0
A12	固定化黑曲霉菌剂	10.0
A21	游离黑曲霉菌剂¹	20.0
A22	固定化黑曲霉菌剂	20.0
A31	游离黑曲霉菌剂	30.0
A32	固定化黑曲霉菌剂	30.0

处理	黑曲霉菌剂类型	菌剂浓度/(g·L^-1)
A0(CK)	—	—
A11	游离黑曲霉菌剂	10.0
A12	固定化黑曲霉菌剂	10.0
A21	游离黑曲霉菌剂¹	20.0
A22	固定化黑曲霉菌剂	20.0
A31	游离黑曲霉菌剂	30.0
A32	固定化黑曲霉菌剂	30.0

处理	喷施时间	菌剂类型
T0(CK)	—	—
T11	DM处理后2 h	游离黑曲霉菌剂
T12	DM处理后2 h	固定化黑曲霉菌剂
T21	DM处理后12 h	游离黑曲霉菌剂
T22	DM处理后12 h	固定化黑曲霉菌剂
T31	DM处理后24 h	游离黑曲霉菌剂
T32	DM处理后24 h	固定化黑曲霉菌剂

处理	喷施时间	菌剂类型
T0(CK)	—	—
T11	DM处理后2 h	游离黑曲霉菌剂
T12	DM处理后2 h	固定化黑曲霉菌剂
T21	DM处理后12 h	游离黑曲霉菌剂
T22	DM处理后12 h	固定化黑曲霉菌剂
T31	DM处理后24 h	游离黑曲霉菌剂
T32	DM处理后24 h	固定化黑曲霉菌剂

添加浓度/ (mg·kg^-1)	添加回收率/%						相对标准差/ %
添加浓度/ (mg·kg^-1)	1	2	3	4	5	平均值	相对标准差/ %
0.05	98.220	93.370	88.670	99.180	96.370	95.162	4.468
0.50	97.820	99.310	97.880	94.650	91.280	96.188	3.358
5.00	99.340	96.390	101.070	96.830	100.120	98.750	2.079