Evaluation on soil nutrients and heavy metals pollution risk in main producing areas of rapeseed in Hunan Province, China

doi:10.3969/j.issn.1004-1524.2021.10.14

Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (10): 1904-1912.DOI: 10.3969/j.issn.1004-1524.2021.10.14

• Environmental Science • Previous Articles Next Articles

Evaluation on soil nutrients and heavy metals pollution risk in main producing areas of rapeseed in Hunan Province, China

XIONG Tinghao¹(), HUANG Yiguo², ZHOU Xuan³, LU Yanhong³, ZI Tao¹, HU Yuqian¹, SONG Haixing¹^,^*()

1. College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
2. Hengyang Agricultural Science Institute, Hengnan 421101, China
3. Soil and Fertilizer Institute of Hunan Province, Changsha 410125, China

Received:2020-12-25 Online:2021-10-25 Published:2021-11-02
Contact: SONG Haixing

Abstract

Abstract:

In this study, 56 topsoil samples were collected from the main producing areas of rapeseed in Hunan Province, and the contents of main nutrients and available heavy metals in these samples were determined to reveal the spatial distribution characteristics of soil fertility, as well as heavy metals pollution risk. The results showed that the soils in the main producing areas of rapeseed in Hunan Province were mainly mild acid and weak acid, and the deficiency of organic matter, nitrogen, phosphorus, potassium, boron, sulfur and molybdenum was common. About half of the soil samples were deficient in calcium and magnesium, yet were rich in iron, manganese, copper and zinc. The soil comprehensive fertility was rated average. Among all the samples, the lightly, moderately and seriously cadmium polluted samples accounted for 16.1%, 1.8% and 1.8%, respectively, and no pollution risk of copper, zinc, lead and nickel was found. Therefore, organic matter, nitrogen, phosphorus, potassium, boron should be reasonably supplemented in the main producing areas of rapeseed in Hunan Province, and measures should be taken to reduce the availability of cadmium in certain areas.

Key words: main producing areas of rapeseed, soil nutrients, fertility evaluation, heavy metal

CLC Number:

S158

XIONG Tinghao, HUANG Yiguo, ZHOU Xuan, LU Yanhong, ZI Tao, HU Yuqian, SONG Haixing. Evaluation on soil nutrients and heavy metals pollution risk in main producing areas of rapeseed in Hunan Province, China[J]. Acta Agriculturae Zhejiangensis, 2021, 33(10): 1904-1912.

Figures/Tables 6

References 23

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项目Item	缺乏Deficient	中等Mid range	丰富 Rich
有机质 Organic matter/(g·kg^-1)	<20	20~40	>40
全氮 Total N/(g·kg^-1)	<1.0	1.0~2.0	>2.0
有效磷 Available P/(mg·kg^-1)	<12	12~30	>30
速效钾 Available K/(mg·kg^-1)	<60	60~180	>180
有效硼 Available B/(mg·kg^-1)	<0.2	0.2~0.6	>0.6
交换性钙 Available Ca/(mg·kg^-1)	<400	400~1 200	>1 200
交换性镁 Available Mg/(mg·kg^-1)	<50	50~100	>100
有效硫 Available S/(mg·kg^-1)	<25	25~50	>50
有效铁 Available Fe/(mg·kg^-1)	<10	10~50	>50
有效锰 Available Mn/(mg·kg^-1)	<5	5~15	>15
有效铜 Available Cu/(mg·kg^-1)	<0.2	0.2~2.0	>2.0
有效锌 Available Zn/(mg·kg^-1)	<0.5	0.5~1.0	>1.0
有效钼 Available Mo/(mg·kg^-1)	<0.15	0.15~0.20	>0.20

项目Item	缺乏Deficient	中等Mid range	丰富 Rich
有机质 Organic matter/(g·kg^-1)	<20	20~40	>40
全氮 Total N/(g·kg^-1)	<1.0	1.0~2.0	>2.0
有效磷 Available P/(mg·kg^-1)	<12	12~30	>30
速效钾 Available K/(mg·kg^-1)	<60	60~180	>180
有效硼 Available B/(mg·kg^-1)	<0.2	0.2~0.6	>0.6
交换性钙 Available Ca/(mg·kg^-1)	<400	400~1 200	>1 200
交换性镁 Available Mg/(mg·kg^-1)	<50	50~100	>100
有效硫 Available S/(mg·kg^-1)	<25	25~50	>50
有效铁 Available Fe/(mg·kg^-1)	<10	10~50	>50
有效锰 Available Mn/(mg·kg^-1)	<5	5~15	>15
有效铜 Available Cu/(mg·kg^-1)	<0.2	0.2~2.0	>2.0
有效锌 Available Zn/(mg·kg^-1)	<0.5	0.5~1.0	>1.0
有效钼 Available Mo/(mg·kg^-1)	<0.15	0.15~0.20	>0.20

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	平均值 Mean	标准差 Standard deviation	变异系数 Coefficient of variation/%	最小值 Minimum	最大值 Maximum	级别 Level	肥力系数 Fertility coefficient
pH值 pH value	5.7	1.1	19.9	4.3	8.0	微酸性Mild acid	1.6
有机质Organic matter/(g·kg^-1)	29.0	10.0	35.0	11.0	57.0	中等Mid range	1.9
全氮Total N/(g·kg^-1)	1.7	0.5	29.5	0.8	2.8	中等Mid range	2.4
有效磷Available P/(mg·kg^-1)	23.2	21.0	90.6	2.9	126.3	中等Mid range	2.2
速效钾Available K/(mg·kg^-1)	103.4	40.1	38.8	42.0	212.0	中等Mid range	1.7
有效硼Available B/(mg·kg^-1)	0.4	0.1	93.7	0.2	1.0	中等Mid range	2.0
交换性钙Available Ca/(mg·kg^-1)	1 994	1 868	62.6	145.4	6 410	丰富Rich	3.0
交换性镁Available Mg/(mg·kg^-1)	148.2	92.9	51.3	25.9	418.3	丰富Rich	3.0
有效硫Available S/(mg·kg^-1)	22.1	11.3	34.4	5.0	59.6	缺乏Deficient	1.0
有效铁Available Fe/(mg·kg^-1)	191.5	133.1	69.5	8.7	435.5	丰富Rich	3.0
有效锰Available Mn/(mg·kg^-1)	66.2	48.7	73.6	9.3	264.3	丰富Rich	3.0
有效铜Available Cu/(mg·kg^-1)	4.5	1.5	34.3	0.9	9.0	丰富Rich	3.0
有效锌Available Zn/(mg·kg^-1)	5.1	3.2	63.8	0.7	17.1	丰富Rich	3.0
有效钼Available Mo/(mg·kg^-1)	0.2	0.1	61.5	0	0.5	中等Mid range	3.0

Evaluation on soil nutrients and heavy metals pollution risk in main producing areas of rapeseed in Hunan Province, China

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项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	样本数量分布Sample quantity distribution				P_i
项目 Item	P_i≤1	1<P_i≤2	2<P_i≤3	P_i>3	平均值 Mean	变异系数 Coefficient of variation/%
Cd	45	9	1	1	0.75	87.4
Cu	56	0	0	0	0.08	39.7
Zn	56	0	0	0	0.02	64.3
Pb	56	0	0	0	0.10	65.8
Ni	56	0	0	0	0.01	64.6

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项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190

项目 Item	pH值≤5.5 pH value≤5.5	5.5<pH值≤6.5 5.5<pH value≤6.5	6.5<pH值≤7.5 6.5<pH value≤7.5	pH值>7.5 pH value>7.5
Cu	50	50	100	100
Zn	200	200	250	300
Cd	0.3	0.3	0.3	0.6
Pb	70	90	120	170
Ni	60	70	100	190