Preliminary Study on Selenium Enrichment of Hawthorn and Persimmon in Typical Carbonate Rock Region of Qingzhou City, Shandong Province

doi:10.11924/j.issn.1000-6850.casb2021-0243

Abstract

Abstract:

Hawthorn and persimmon have undergone a long history of planting in the carbonate rock area in the southwest Qingzhou City of Shandong Province, and their fruits are of high quality. By collecting the fruits of hawthorn and persimmon, and their root soil, the selenium (Se) level, enrichment rule and the influencing factors were studied, aiming to provide a scientific basis for the subsequent development of Se-rich fruit industry. The results show that: (1) Se is relatively rich in hawthorn and persimmon root soil in the study area, which is closely related to organic matter; due to the adsorption and solidification of organic matter, the content of easy-to-use Se is low; (2) the content of Se in the fruits of hawthorn and persimmon is low, so is the enrichment coefficient; the enrichment ratio of Se in hawthorn is 17.65%, whereas that of persimmon does not reach the level of Se enrichment; (3) the Se enrichment coefficient of persimmon and hawthorn is strongly and negatively correlated with the content of organic matter and Se in the root soil; (4) the adsorption and solidification of Se by organic matter could increase the content of Se in the soil, but reduce the bioavailability of Se, and organic matter is the key factor affecting the availability of Se.

Key words: carbonate rock area, hawthorn, persimmon, selenium, organic matter, Qingzhou

CLC Number:

Q946

JIANG Bing, SUN Zengbing, ZHANG Hairui, LIU Yang, ZHANG Hongbin. Preliminary Study on Selenium Enrichment of Hawthorn and Persimmon in Typical Carbonate Rock Region of Qingzhou City, Shandong Province[J]. Chinese Agricultural Science Bulletin, 2022, 38(3): 37-43.

Figures/Tables 10

References 21

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元素或指标	平均值	标准差	变异系数	K值
Cu	24.94	11.35	0.46	1.12
Pb	29.33	15.14	0.52	1.32
Zn	82.04	29.55	0.36	1.21
Cr	70.68	5.01	0.07	1.02
Cd	0.17	0.03	0.20	1.06
Ni	36.29	3.72	0.10	1.27
As	11.34	2.71	0.24	1.03
Hg	0.028	0.009	0.33	0.71
Se	0.24	0.10	0.43	1.14
CEC	18.89	4.54	0.24	—
有机质	20.58	9.32	0.45	1.13
pH	8.09	0.17	0.02	1.03

元素或指标	平均值	标准差	变异系数	K值
Cu	24.94	11.35	0.46	1.12
Pb	29.33	15.14	0.52	1.32
Zn	82.04	29.55	0.36	1.21
Cr	70.68	5.01	0.07	1.02
Cd	0.17	0.03	0.20	1.06
Ni	36.29	3.72	0.10	1.27
As	11.34	2.71	0.24	1.03
Hg	0.028	0.009	0.33	0.71
Se	0.24	0.10	0.43	1.14
CEC	18.89	4.54	0.24	—
有机质	20.58	9.32	0.45	1.13
pH	8.09	0.17	0.02	1.03

元素或指标	相关系数R
Cu	0.349^*
Pb	0.182
Zn	0.347^*
Cr	0.070
Cd	0.721^**
Ni	0.281
As	0.282
Hg	0.577^**
CEC	0.452^**
有机质	0.908^**
pH	-0.026

元素或指标	相关系数R
Cu	0.349^*
Pb	0.182
Zn	0.347^*
Cr	0.070
Cd	0.721^**
Ni	0.281
As	0.282
Hg	0.577^**
CEC	0.452^**
有机质	0.908^**
pH	-0.026

作物	参数	最大值	最小值	平均值	标准差
山楂	果实Se/(mg/kg)	0.0110	0.0001	0.0050	0.0035
	根系土Se/(mg/kg)	0.41	0.11	0.27	0.08
	富集系数/%	7.33	0.03	2.20	2.02
柿子	果实Se/(mg/kg)	0.0061	0.0001	0.0026	0.0013
	根系土Se/(mg/kg)	0.44	0.08	0.21	0.11
	富集系数/%	4.38	0.05	1.49	0.96