Effects of application of biochar from different raw materials combined with inorganic amendments on cadmium accumulation in pakchoi shoots and soil cadmium inactivation

doi:10.3969/j.issn.1004-1524.20230659

Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (3): 613-621.DOI: 10.3969/j.issn.1004-1524.20230659

• Environmental Science • Previous Articles Next Articles

Effects of application of biochar from different raw materials combined with inorganic amendments on cadmium accumulation in pakchoi shoots and soil cadmium inactivation

YU Chao¹(), WANG Yinyu², LIU Qizhen², WANG Yun³, SHEN Hong³, FENG Ying²^,^*()

1. Livestock Industrial Development Center of Shengzhou, Shengzhou 310024, Zhejiang, China
2. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
3. Planting Technology Extension Center of Dongyang (Plant Protection and Inspection Station of Dongyang), Dongyang 322103, Zhejiang, China

Received:2023-05-18 Online:2024-03-25 Published:2024-04-09

Abstract

Abstract:

Biochar is a cost-effective material for soil heavy metal inactivation. To investigate the effects of application of biochar from different raw materials combined with zeolite-lime on soil cadmium (Cd) inactivation and Cd content in the edible part of crop, biochar was prepared from 7 easily obtained and large amount agricultural wastes, and a pot experiment using the typical greenhouse vegetable soil with moderate Cd pollution in southern China was conducted in this study. It was found that there were significant (P<0.05) differences in the microstructure and basic physicochemical properties among the 7 kinds of biochar. The combination of biochar with inorganic agents could increase soil pH, organic matter content, electrical conductivity, cation exchange capacity, hydrolysable nitrogen content, available potassium content and available phosphorus content, reduce soil available Cd content, and significantly increase the shoot dry weight of pakchoi compared than the blank control without application of passivators, promote crop growth, and significantly decrease Cd content in shoot and Cd translocation factor. Compared to applying inorganic deactivators alone, application of biochar combined with inorganic amendments had better effects on improving soil physicochemical properties, promoting crop growth, and reducing Cd content in the edible part.

Key words: leaf vegetable, heavy metal, organic combined inorganic deactivator, biochar, translocation factor

CLC Number:

S634.3
S156

YU Chao, WANG Yinyu, LIU Qizhen, WANG Yun, SHEN Hong, FENG Ying. Effects of application of biochar from different raw materials combined with inorganic amendments on cadmium accumulation in pakchoi shoots and soil cadmium inactivation[J]. Acta Agriculturae Zhejiangensis, 2024, 36(3): 613-621.

Figures/Tables 7

References 22

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材料 Material	pH	EC/ (μC·cm^-1)	CEC/ (cmol·kg^-1)	OM/ (g·kg^-1)	AN/ (mg·kg^-1)	AP/ (mg·kg^-1)	AK/ (mg·kg^-1)	DTPA-Cd/ (mg·kg^-1)	TCd/ (mg·kg^-1)
土壤Soil	5.70	1 199	9.25	27.50	261.10	99.79	155.00	0.40	0.88
石灰Lime	12.18	7 800	—	—	—	—	145.00	—	0.07
沸石Zeolite	9.81	165	10.55	—	—	—	735.00	—	0.02

材料 Material	pH	EC/ (μC·cm^-1)	CEC/ (cmol·kg^-1)	OM/ (g·kg^-1)	AN/ (mg·kg^-1)	AP/ (mg·kg^-1)	AK/ (mg·kg^-1)	DTPA-Cd/ (mg·kg^-1)	TCd/ (mg·kg^-1)
土壤Soil	5.70	1 199	9.25	27.50	261.10	99.79	155.00	0.40	0.88
石灰Lime	12.18	7 800	—	—	—	—	145.00	—	0.07
沸石Zeolite	9.81	165	10.55	—	—	—	735.00	—	0.02

原料 Raw material	pH	碳含量 Carbon content/%	EC/ (dS· cm^-1)	CEC/ (cmol· kg^-1)	碱解氮含量 Hydrolysable nitrogen content/ (mg·kg^-1)	速效钾含量 Available potassium content/ (g·kg^-1)	有效磷含量 Available phosphorus content/(mg·kg^-1)	总Cd含量 Total Cd content/ (mg·kg^-1)
稻壳Rice husk	10.00± 0.11	32.9±1.2	1.05± 0.07	33.5 ± 3.5	4.90 ± 1.03	0.943±0.043	128.0±18.1	0.22±0.02
猪粪Pig manure	9.71± 0.12	70.9±5.6	1.97 ± 0.03	40.8 ± 2.0	35.70± 5.70	0.963±0.013	267.0±16.6	0.14±0.03
污泥Sludge	7.44± 0.09	26.9±3.4	8.02± 0.01	22.4 ± 1.4	217.00± 17.00	0.135± 0.001	23.6±1.3	0.25±0.08
玉米秸秆Corn straw	8.72± 0.04	87.2±4.2	2.93± 0.13	34.9 ± 0.9	29.40±4.42	1.470±0.181	476.0±15.7	0.28±0.03
木屑Woodchips	10.30± 0.11	90.4+3.8	1.38 ± 0.05	26.7 ± 3.8	9.10± 1.23	0.658 ±0.575	10.9±0.5	0.32±0.01
菖蒲Acorus calamus	8.71± 0.14	55.9±0.5	1.50± 0.08	31.8 ± 2.6	—	2.070± 0.215	109.0±13.2	0.14±0.01
竹屑Bamboo shavings	9.70± 0.12	81.8±2.6	9.22± 0.11	35.4 ± 1.9	—	1.630± 0.127	41.9±5.4	0.18±0.02

原料 Raw material	pH	碳含量 Carbon content/%	EC/ (dS· cm^-1)	CEC/ (cmol· kg^-1)	碱解氮含量 Hydrolysable nitrogen content/ (mg·kg^-1)	速效钾含量 Available potassium content/ (g·kg^-1)	有效磷含量 Available phosphorus content/(mg·kg^-1)	总Cd含量 Total Cd content/ (mg·kg^-1)
稻壳Rice husk	10.00± 0.11	32.9±1.2	1.05± 0.07	33.5 ± 3.5	4.90 ± 1.03	0.943±0.043	128.0±18.1	0.22±0.02
猪粪Pig manure	9.71± 0.12	70.9±5.6	1.97 ± 0.03	40.8 ± 2.0	35.70± 5.70	0.963±0.013	267.0±16.6	0.14±0.03
污泥Sludge	7.44± 0.09	26.9±3.4	8.02± 0.01	22.4 ± 1.4	217.00± 17.00	0.135± 0.001	23.6±1.3	0.25±0.08
玉米秸秆Corn straw	8.72± 0.04	87.2±4.2	2.93± 0.13	34.9 ± 0.9	29.40±4.42	1.470±0.181	476.0±15.7	0.28±0.03
木屑Woodchips	10.30± 0.11	90.4+3.8	1.38 ± 0.05	26.7 ± 3.8	9.10± 1.23	0.658 ±0.575	10.9±0.5	0.32±0.01
菖蒲Acorus calamus	8.71± 0.14	55.9±0.5	1.50± 0.08	31.8 ± 2.6	—	2.070± 0.215	109.0±13.2	0.14±0.01
竹屑Bamboo shavings	9.70± 0.12	81.8±2.6	9.22± 0.11	35.4 ± 1.9	—	1.630± 0.127	41.9±5.4	0.18±0.02

处理 Treatments	pH	EC/ (μS· cm^-1)	CEC/ (cmol· kg^-1)	有机质含量 Organic matter content/ (g·kg^-1)	碱解氮含量 Hydrolysable nitrogen content/ (mg·kg^-1)	速效钾含量 Available potassium content/ (mg·kg^-1)	有效磷含量 Available phosphorus content/(mg·kg^-1)
CK	5.79±0.14 f	858.07±42.04 e	8.87±0.32 c	27.71±1.25 c	144.03±5.39 f	137.67±5.69 f	135.90±3.52 f
SF	6.96±0.08 e	892.67±5.13 de	9.95±0.12 b	26.91±2.20 c	152.60±3.29 e	159.67±4.16 de	144.67±5.39 e
ZF	7.59±0.08 ab	1 217.33±51.43 a	10.58+0.63 a	27.56±1.68 c	177.33±2.14 b	226.67±4.51 a	184.69±1.75 a
DGK	7.51±0.11 abc	975.77±60.83 cd	10.16±0.19 ab	27.52±0.48 c	170.27±2.05 c	158.33±3.51 e	150.48±5.11 de
YM	7.29±0.06 d	1 113.83±83.36 ab	9.86±0.03 b	29.10±0.40 abc	164.50±3.03 d	186.00±5.00 b	151.30±4.91 de
ZZ	7.43±0.09 bcd	1 095.33±84.62 b	10.11±0.20 ab	31.02±0.66 a	177.57±2.28 b	168.67±5.51 cd	171.58±6.74 b
MP	7.46±0.08 abc	1 052.00±62.27 bc	10.09±0.09 ab	28.18±0.84 bc	170.57±4.22 c	168.33±5.69 cd	158.23±6.79 cd
CPC	7.63±0.11 a	1 166.67±72.86 ab	10.06±0.14 b	30.25±2.19 ab	179.67±2.65 ab	219.33±6.66 a	163.57±2.98 bc
WN	7.39±0.06 cd	1 056.03±44.98 bc	10.26±0.08 ab	27.42±0.66 c	183.43±2.37 a	170.33±6.35 c	146.03±2.20 e

Effects of application of biochar from different raw materials combined with inorganic amendments on cadmium accumulation in pakchoi shoots and soil cadmium inactivation

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