Effects of optimizing fertilizer management on yield, quality and greenhouse gas emissions of Citrus×aurantium L. Changshanhuyou

doi:10.3969/j.issn.1004-1524.20240790

Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (11): 2293-2307.DOI: 10.3969/j.issn.1004-1524.20240790

• Horticultural Science • Previous Articles Next Articles

Effects of optimizing fertilizer management on yield, quality and greenhouse gas emissions of Citrus×aurantium L. Changshanhuyou

SHEN Jiayu¹^,²(), DENG Yan³, LI Bei³, WANG Jiayu³, ZHANG Jiwen⁴, PENG Guofang⁵, WU Qun⁶, ZHU Qichao³, ZHANG Weifeng¹^,²^,³, DUAN Zhiping³^,^*()

1. College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
2. Anhui Key Laboratory of Farmland Ecological Conservation and Efficient Utilization of Nutrient Resources, Hefei 230036, China
3. College of Resources and Environment, China Agricultural University, Beijing 100083, China
4. Quzhou Agricultural Characteristic Industry Development Center, Quzhou 324000, Zhejiang, China
5. Dabaoshan Citrus Professional Cooperative of Changshan County, Changshan 324204, Zhejiang, China
6. Quzhou Agricultural Forestry Science Research Institute, Quzhou 324003, China

Received:2024-09-07 Online:2025-11-25 Published:2025-12-08
Contact: ^*段志平,E-mail: d_zhiping12@163.com

Abstract

Abstract:

To explore the special fertilizer formulas suitable for Citrus×aurantium L. Changshanhuyou at different growth stages and their effects on yield, quality, greenhouse gas emissions, and soil fertility, this study established four fertilization modes: CK (no fertilization), FP (farmers’ conventional fertilization), OPT (optimized fertilization) and OPT50%N (optimized fertilization with nitrogen application rate reduced by 50%). The static chamber-gas chromatography method was employed to monitor the emissions of greenhouse gases (N₂O and CH₄) throughout the growth period within one year (from March 30th, 2023 to January 11th, 2024). The results showed that compared with the FP treatment: the OPT treatment did not cause a significant decrease in fruit yield while improving fruit quality, with titratable acidity significantly (p<0.05) reduced by 21.6%, ratio of total soluble solids content to titratable acidity and edible rate significantly increased by 27.7% and 2.37 percentage points, respectively; cumulative CH₄ emission and greenhouse gas intensity (GHGI) were significantly reduced by 30.8% and 33.3%, respectively; and the supply of soil nutrients in soil was guaranteed. Although the OPT50%N treatment also maintained fruit quality and the supply of available nutrients in soil, with cumulative N₂O emission and CH₄ emission significantly reduced by 30.9% and 61.5% than those of FP treatment, respectively, the fruit yield was significantly decreased by 4.52%. In conclusion, the OPT treatment could not only ensure fruit yield but also achieve the coordination of quality improvement and greenhouse gas emissions reduction, and thus could be developed into a special fertilizer product. The total nutrients input of chemical fertilizers in this treatment was reduced by 24.4% compared with FP, which effectively realized the usage reduction and efficiency improvement of chemical fertilizers.

Key words: orchard, Changshanhuyou, reducing fertilizer usage, special formulated fertilizer, soil available nutrients, greenhouse gas emissions reduction

CLC Number:

S666.306.2

SHEN Jiayu, DENG Yan, LI Bei, WANG Jiayu, ZHANG Jiwen, PENG Guofang, WU Qun, ZHU Qichao, ZHANG Weifeng, DUAN Zhiping. Effects of optimizing fertilizer management on yield, quality and greenhouse gas emissions of Citrus×aurantium L. Changshanhuyou[J]. Acta Agriculturae Zhejiangensis, 2025, 37(11): 2293-2307.

Figures/Tables 6

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处理 Treatment	单株挂果数量 Fruit quantity per plant	单果重 Single fruit weight/g	产量 Yield/(t·hm^-2)
CK	320.92±4.19 c	272.05±6.26 b	69.46±0.77 c
FP	441.25±8.17 a	275.86±4.98 ab	88.92±1.05 a
OPT	426.73±2.80 ab	285.69±1.55 a	88.72±1.02 a
OPT50%N	418.07±10.79 b	281.93±5.97 ab	84.90±0.20 b

处理 Treatment	单株挂果数量 Fruit quantity per plant	单果重 Single fruit weight/g	产量 Yield/(t·hm^-2)
CK	320.92±4.19 c	272.05±6.26 b	69.46±0.77 c
FP	441.25±8.17 a	275.86±4.98 ab	88.92±1.05 a
OPT	426.73±2.80 ab	285.69±1.55 a	88.72±1.02 a
OPT50%N	418.07±10.79 b	281.93±5.97 ab	84.90±0.20 b

处理 Treatment	横径 Transverse diameter/mm	纵径 Vertical diameter/mm	可溶性固形物含量 Total soluble solids content/%	可滴定酸度 Titratable acidity/%	固酸比 Ratio of total soluble solids content to titratable acidity	维生素C含量 Vitamin C content/(mg·g^-1)	可食率 Edible rate/%
CK	86.41±2.23 ab	72.00±1.67 a	11.13±0.15 b	1.08±0.08 ab	10.37±0.72 ab	0.293 7±0.004 5 b	65.48±0.29 b
FP	87.74±1.06 ab	75.39±1.22 a	11.57±0.15 a	1.25±0.07 a	9.29±0.60 b	0.304 6±0.005 1 ab	65.22±0.34 b
OPT	89.80±1.52 a	75.55±2.06 a	11.63±0.21 a	0.98±0.04 b	11.86±0.68 a	0.309 7±0.008 8 a	67.59±0.22 a
OPT50%N	85.78±0.98 b	73.60±2.27 a	11.50±0.10 ab	0.98±0.10 b	11.80±1.12 a	0.303 1±0.003 6 ab	67.55±0.25 a

处理 Treatment	横径 Transverse diameter/mm	纵径 Vertical diameter/mm	可溶性固形物含量 Total soluble solids content/%	可滴定酸度 Titratable acidity/%	固酸比 Ratio of total soluble solids content to titratable acidity	维生素C含量 Vitamin C content/(mg·g^-1)	可食率 Edible rate/%
CK	86.41±2.23 ab	72.00±1.67 a	11.13±0.15 b	1.08±0.08 ab	10.37±0.72 ab	0.293 7±0.004 5 b	65.48±0.29 b
FP	87.74±1.06 ab	75.39±1.22 a	11.57±0.15 a	1.25±0.07 a	9.29±0.60 b	0.304 6±0.005 1 ab	65.22±0.34 b
OPT	89.80±1.52 a	75.55±2.06 a	11.63±0.21 a	0.98±0.04 b	11.86±0.68 a	0.309 7±0.008 8 a	67.59±0.22 a
OPT50%N	85.78±0.98 b	73.60±2.27 a	11.50±0.10 ab	0.98±0.10 b	11.80±1.12 a	0.303 1±0.003 6 ab	67.55±0.25 a

处理 Treatment	N₂O累积排放量 Cumulative N₂O emission/(kg·hm^-2)	CH₄累积排放量 Cumulative CH₄ emission/(kg·hm^-2)	GWP/(kg·hm^-2)	GHGI/(kg·kg^-1)
CK	4.28±0.23 c	-0.03±0.01 d	1 275.18±68.82 c	0.02±0.01 b
FP	8.77±0.54 a	0.13±0.01 a	2 618.15±160.45 a	0.03±0.01 a
OPT	7.06±0.32 ab	0.09±0.02 b	2 107.23±96.33 b	0.02±0.01 b
OPT50%N	6.06±0.48 bc	0.05±0.01 c	1 807.56±141.82 b	0.02±0.01 b

Effects of optimizing fertilizer management on yield, quality and greenhouse gas emissions of Citrus×aurantium L. Changshanhuyou

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