Effects of soil amendments on Cd uptake and accumulation in red pepper

doi:10.3969/j.issn.1004-1524.2021.10.16

Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (10): 1921-1930.DOI: 10.3969/j.issn.1004-1524.2021.10.16

• Environmental Science • Previous Articles Next Articles

Effects of soil amendments on Cd uptake and accumulation in red pepper

CHEN De¹(), ZHAO Shouping¹, YE Xuezhu¹^,^*(), ZHANG Qi¹, XIAO Wendan¹, RUAN Yifei², WU Shaofu³

1. Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
2. Farmland Construction Service Center of Lin’an District, Hangzhou 311300, China
3. Shaoxing Grain and Oil Crop Technology Extension Center, Shaoxing 312000, China

Received:2021-05-09 Online:2021-10-25 Published:2021-11-02
Contact: YE Xuezhu

Abstract

Abstract:

Field experiment was conducted to investigate effects of soil amendments on uptake and accumulation of Cd in red pepper and to screen out suitable soil amendment that can effectively reduce Cd uptake in red pepper. The results showed that red pepper Yanjiao 425 had a strong ability to absorb Cd from soil, Cd concentrations in different tissues were as follows: stem and leaf>root>fruit. Concentrations of Cd in red pepper fruit ranged from 0.049 to 0.106 mg·kg^-1, Cd concentrations in red pepper fruit were reduced by 25%-54% as a result of application of soil amendments except for biochar, where the highest reduction of Cd was attributed to sepiolite, followed by the composite amendments. Translocation factor and concentration factor were also effectively reduced at the ranges of 26%-44% and 23%-52%, respectively. Decreases of Cd contents in pepper were mainly attributed to the increase of soil pH value and the decrease of soil Cd availability as a result of amendments addition into soil. Compared with the control, soil pH value increased by 0.8-2.4 units, and the available Cd contents decreased by 68%-93% in amended soils. Besides, different amendments also increased the content of soil organic matter and main nutrients. In general, sepiolite and composite amendments could effectively improve soil properties, reduce the uptake, transportation and accumulation of Cd in red pepper, and to ensure the safety of pepper production.

Key words: red pepper, heavy metal, soil, in-situ remediation, uptake and translocation

CLC Number:

CHEN De, ZHAO Shouping, YE Xuezhu, ZHANG Qi, XIAO Wendan, RUAN Yifei, WU Shaofu. Effects of soil amendments on Cd uptake and accumulation in red pepper[J]. Acta Agriculturae Zhejiangensis, 2021, 33(10): 1921-1930.

Figures/Tables 5

References 47

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处理	果实Cd含量 Fruit Cd content/ (mg·kg^-1)	茎叶Cd含量 Shoot Cd content/ (mg·kg^-1)	根系Cd含量 Root Cd content/ (mg·kg^-1)	转运系数 Translocation factor	富集系数 Concentration factor
CK	0.106±0.004a	1.51±0.15 a	0.51±0.10 a	3.10±0.95 a	0.55±0.03 a
BC	0.104±0.004 a	1.08±0.05 b	0.48±0.10 ab	2.29±0.40 bc	0.55±0.01 a
SH	0.078±0.015 b	0.83±0.06 c	0.41±0.03 ab	2.04±0.00 c	0.42±0.09 b
SEP	0.049±0.006 c	0.53±0.03 e	0.24±0.00 d	2.18±0.10 bc	0.26±0.04 c
GMP	0.079±0.014 b	0.77±0.10 c	0.28±0.03 d	2.77±0.11 ab	0.41±0.06 b
F1	0.068±0.006 bc	0.58±0.06 de	0.30±0.04 cd	1.95±0.09 c	0.37±0.03 b
F2	0.078±0.013 b	0.75±0.18 cd	0.43±0.02 ab	1.73±0.32 c	0.41±0.06 b
F3	0.064±0.018 bc	0.76±0.09 c	0.40±0.07 bc	1.92±0.09 c	0.34±0.08 bc

处理	果实Cd含量 Fruit Cd content/ (mg·kg^-1)	茎叶Cd含量 Shoot Cd content/ (mg·kg^-1)	根系Cd含量 Root Cd content/ (mg·kg^-1)	转运系数 Translocation factor	富集系数 Concentration factor
CK	0.106±0.004a	1.51±0.15 a	0.51±0.10 a	3.10±0.95 a	0.55±0.03 a
BC	0.104±0.004 a	1.08±0.05 b	0.48±0.10 ab	2.29±0.40 bc	0.55±0.01 a
SH	0.078±0.015 b	0.83±0.06 c	0.41±0.03 ab	2.04±0.00 c	0.42±0.09 b
SEP	0.049±0.006 c	0.53±0.03 e	0.24±0.00 d	2.18±0.10 bc	0.26±0.04 c
GMP	0.079±0.014 b	0.77±0.10 c	0.28±0.03 d	2.77±0.11 ab	0.41±0.06 b
F1	0.068±0.006 bc	0.58±0.06 de	0.30±0.04 cd	1.95±0.09 c	0.37±0.03 b
F2	0.078±0.013 b	0.75±0.18 cd	0.43±0.02 ab	1.73±0.32 c	0.41±0.06 b
F3	0.064±0.018 bc	0.76±0.09 c	0.40±0.07 bc	1.92±0.09 c	0.34±0.08 bc

处理	有机质 Organic matter/ (g·kg^-1)	全氮 Total nitrogen/ (g·kg^-1)	碱解氮 Alkali hydrolyzable nitrogen/(mg·kg^-1)	全磷 Total phosphorus/ (g·kg^-1)	有效磷 Available phosphorus/ (mg·kg^-1)
CK	27.00±1.83 d	1.58±0.03 d	129.6±3.3 c	0.91±0.10 b	28.33±2.74 ef
BC	37.65±4.74 a	1.84±0.12 a	148.5±6.3 b	0.89±0.06 b	30.37±3.65 de
SH	30.50±0.99 bcd	1.77±0.03 ab	170.8±22.8 a	0.89±0.05 b	50.83±8.04 b
SEP	27.75±0.21 cd	1.60±0.03 cd	146.0±2.2 bc	0.75±0.01 c	18.80±2.43 f
GMP	30.70±2.26 bcd	1.68±0.02 bc	149.6±5.4 b	1.07±0.09 a	69.28±5.55 a
F1	30.80±1.41 bcd	1.70±0.06 b	156.0±6.6 ab	0.93±0.04 b	33.45±7.75 cde
F2	33.13±0.04 ab	1.70±0.01 b	158.4±8.9 ab	0.87±0.01 b	40.43±5.60 bcd
F3	31.55±0.92 bc	1.73±0.07 b	155.6±8.1 ab	0.94±0.06 b	42.10±8.90 bc

处理	有机质 Organic matter/ (g·kg^-1)	全氮 Total nitrogen/ (g·kg^-1)	碱解氮 Alkali hydrolyzable nitrogen/(mg·kg^-1)	全磷 Total phosphorus/ (g·kg^-1)	有效磷 Available phosphorus/ (mg·kg^-1)
CK	27.00±1.83 d	1.58±0.03 d	129.6±3.3 c	0.91±0.10 b	28.33±2.74 ef
BC	37.65±4.74 a	1.84±0.12 a	148.5±6.3 b	0.89±0.06 b	30.37±3.65 de
SH	30.50±0.99 bcd	1.77±0.03 ab	170.8±22.8 a	0.89±0.05 b	50.83±8.04 b
SEP	27.75±0.21 cd	1.60±0.03 cd	146.0±2.2 bc	0.75±0.01 c	18.80±2.43 f
GMP	30.70±2.26 bcd	1.68±0.02 bc	149.6±5.4 b	1.07±0.09 a	69.28±5.55 a
F1	30.80±1.41 bcd	1.70±0.06 b	156.0±6.6 ab	0.93±0.04 b	33.45±7.75 cde
F2	33.13±0.04 ab	1.70±0.01 b	158.4±8.9 ab	0.87±0.01 b	40.43±5.60 bcd
F3	31.55±0.92 bc	1.73±0.07 b	155.6±8.1 ab	0.94±0.06 b	42.10±8.90 bc

参数 Parameter	果实中Cd Fruit Cd	土壤pH值 Soil pH value	有效态Cd Available Cd	有机质 Organic matter	茎叶中Cd Shoot Cd	根中Cd Root Cd
土壤pH值 Soil pH value	-0.768^**
有效态Cd Available Cd	0.655^**	-0.856^**
有机质 Organic matter	0.255	-0.062	-0.204
茎叶中Cd Shoot Cd	0.746^**	-0.892^**	0.873^**	0.039
根中Cd Root Cd	0.685^**	-0.694^**	0.599^**	0.363	0.710^**
转运系数 Translocation factor	0.340	-0.523^**	0.560^**	-0.290	0.638^**	-0.078

Effects of soil amendments on Cd uptake and accumulation in red pepper

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