Status of soil phosphorus pools in Zizania latifolia field and their relationships with plantation years and leaching risk

doi:10.3969/j.issn.1004-1524.20221683

Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (11): 2645-2654.DOI: 10.3969/j.issn.1004-1524.20221683

• Environmental Science • Previous Articles Next Articles

Status of soil phosphorus pools in Zizania latifolia field and their relationships with plantation years and leaching risk

SHAN Yingjie¹(), REN Bailin², CHEN Yuhang², DING Zhifeng², ZHANG Mingkui²^,^*()

1. Zhejiang Management Station of Cropland Quality and Fertilizer, Hangzhou 310020, China
2. College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China

Received:2022-11-25 Online:2023-11-25 Published:2023-12-04

Abstract

Abstract:

In the present study, the abundance and deficiency of phosphorus in surface (0-20 cm) soil and characteristics of phosphorus pool in typical Zizania latifolia planting areas in Zhejiang Province were investigated, and the relationship between the plantation years of Zizania latifolia and the accumulation of phosphorus in soil was analyzed. It was shown that the average contents of total P and available P (Olsen-P) in the soil samples were 876.73, 63.30 mg·kg^-1, respectively. Phosphorus was accumulated in the soil of Zizania latifolia planting areas, and the proportion of soil samples with abundant level of available P was as high as 81.05%. Inorganic P was the main form of P in the soil samples, which accounted for 79.91% of the total P on average. The average contents of water-extractable inorganic P (H₂O-Pi), NaHCO₃-extractable inorganic P (NaHCO₃-Pi), NaOH-extractable inorganic P (NaOH-Pi), HCl-extractable inorganic P (HCl-Pi), NaHCO₃-extractable organic P (NaHCO₃-Po), NaOH-extractable organic P (NaOH-Po) and residual P were 16.16, 122.06, 213.03, 103.22, 22.18, 158.52, 241.86 mg·kg^-1, respectively. Except the residual P and HCl-Pi, the contents of the other forms of P increased with the increasing planting years of Zizania latifolia. The degree of P sorption saturation increased with the increasing plantation years of Zizania latifolia, while soil phosphorus moved downward along the profile obviously. When the soil available P content was greater than 60 mg·kg^-1, the phosphorus leaching risk increased, and about 48.37% of the soil samples showed high phosphorus leaching risk.

Key words: Zizania latifolia, available phosphorus, phosphorus leaching risk, phosphorus forms

CLC Number:

S153.61

SHAN Yingjie, REN Bailin, CHEN Yuhang, DING Zhifeng, ZHANG Mingkui. Status of soil phosphorus pools in Zizania latifolia field and their relationships with plantation years and leaching risk[J]. Acta Agriculturae Zhejiangensis, 2023, 35(11): 2645-2654.

Figures/Tables 8

References 28

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磷形态 Phosphorus form	范围 Range	平均值 Mean	标准差 Standard deviation
H₂O-Pi	0.43~2.65	1.66	0.57
NaHCO₃-Pi	0.87~25.32	13.29	4.22
NaOH-Pi	3.26~44.56	21.08	9.21
HCl-Pi	1.05~30.45	12.47	6.63
NaHCO₃-Po	0.59~5.97	2.56	1.07
NaOH-Po	3.81~31.98	17.53	5.39
R-P	10.28~73.35	31.41	11.45
O-P	5.59~35.75	20.09	5.72

磷形态 Phosphorus form	范围 Range	平均值 Mean	标准差 Standard deviation
H₂O-Pi	0.43~2.65	1.66	0.57
NaHCO₃-Pi	0.87~25.32	13.29	4.22
NaOH-Pi	3.26~44.56	21.08	9.21
HCl-Pi	1.05~30.45	12.47	6.63
NaHCO₃-Po	0.59~5.97	2.56	1.07
NaOH-Po	3.81~31.98	17.53	5.39
R-P	10.28~73.35	31.41	11.45
O-P	5.59~35.75	20.09	5.72

种植年限	OM/(g·kg^-1)	pH值pH value	TP/(g·kg^-1)	Olsen-P/(mg·kg^-1)	CaCl₂-P/(mg·kg^-1)
Plantation years/a
0(CK)	25.45±7.79 bc	5.59±0.55 ab	522±146 d	17.41±17.70 d	0.29±0.19 c
<5	21.43±5.93 c	6.01±0.77 a	528±157 d	24.11±13.91 d	0.29±0.15 c
5~<10	27.51±9.49 ab	5.83±0.80 ab	690±166 cd	46.79±26.64 c	0.58±0.34 c
10~<20	27.57±8.08 ab	5.55±0.67 ab	894±226 bc	67.43±28.86 bc	1.24±1.37 b
20~<30	29.99±7.80 a	5.23±0.92 bc	1 083±512 ab	85.44±27.31 ab	1.72±1.78 ab
≥30	30.09±7.13 a	4.99±0.39 c	1 392±752 a	99.09±35.74 a	2.93±2.52 a

种植年限	OM/(g·kg^-1)	pH值pH value	TP/(g·kg^-1)	Olsen-P/(mg·kg^-1)	CaCl₂-P/(mg·kg^-1)
Plantation years/a
0(CK)	25.45±7.79 bc	5.59±0.55 ab	522±146 d	17.41±17.70 d	0.29±0.19 c
<5	21.43±5.93 c	6.01±0.77 a	528±157 d	24.11±13.91 d	0.29±0.15 c
5~<10	27.51±9.49 ab	5.83±0.80 ab	690±166 cd	46.79±26.64 c	0.58±0.34 c
10~<20	27.57±8.08 ab	5.55±0.67 ab	894±226 bc	67.43±28.86 bc	1.24±1.37 b
20~<30	29.99±7.80 a	5.23±0.92 bc	1 083±512 ab	85.44±27.31 ab	1.72±1.78 ab
≥30	30.09±7.13 a	4.99±0.39 c	1 392±752 a	99.09±35.74 a	2.93±2.52 a

种植年限	H₂O-Pi	NaHCO₃-Pi	NaOH-Pi	HCl-Pi	NaHCO₃-Po	NaOH-Po	R-P	TPo	TPi
Plantation years/a
0(CK)	3.73 ±4.21 c	64.50 ±35.17 c	65.89 ±51.19 c	63.71 ±32.83 b	20.87 ±10.13 ab	90.75 ±40.14 bc	212.05 ±21.89 b	111.62 ±44.56 cd	409.88 ±120.13 c
<5	5.49 ±4.77 c	49.81 ±38.75 c	67.55 ±54.95 c	82.73 ±30.45 ab	12.17 ±9.55 b	72.05 ±48.29 c	240.89 ±31.18 ab	84.22 ±53.24 d	444.1 ±109.17 c
5~<10	10.59 ±6.07 bc	89.03 ±42.61 bc	125.36 ±74.53 b	91.71 ±34.99 a	17.99 ±9.81 b	126.50 ±63.46 b	228.77 ±25.75 ab	144.49 ±69.34 cd	545.46 ±109.77 bc
10~<20	16.92 ±6.93 b	128.52 ±42.80 b	214.58 ±113.61 b	107.07 ±68.48 a	23.13 ±10.87 ab	162.90 ±55.19 b	240.46 ±26.86 ab	186.03 ±61.71 bc	707.56 ±183.09 ab
20~<30	22.35 ±14.07 ab	159.67 ±58.77 ab	303.93 ±236.06 ab	119.08 ±126.49 a	27.50 ±9.03 ab	203.69 ±103.76 ab	246.83 ±39.07 ab	231.2 ±107.84 ab	851.86 ±418.75 ab
≥30	30.70 ±19.35 a	212.73 ±148.40 a	470.96 ±376.41 a	110.66 ±71.63 a	32.74 ±15.59 a	254.5 ±112.33 a	279.73 ±74.47 a	287.23 ±124.52 a	1 104.77 ±638.91 a

Status of soil phosphorus pools in Zizania latifolia field and their relationships with plantation years and leaching risk

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