Effects of Simultaneous Biochar and Nitrogen Fertilizer Application on the Yield，Quality and Cd Uptake of Pepper

doi:10.16420/j.issn.0513-353x.2021-1158

Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (3): 549-558.doi: 10.16420/j.issn.0513-353x.2021-1158

• Research Papers • Previous Articles Next Articles

Effects of Simultaneous Biochar and Nitrogen Fertilizer Application on the Yield，Quality and Cd Uptake of Pepper

CHAI Guanqun¹, ZHANG Xiujin², ZHANG Ronghui³, WANG Li¹, LIU Guihua¹, LUO Muxinjian¹, FAN Chengwu¹^,^*()

¹Institute of Soil and Fertilizer，Guizhou Academy of Agricultural Sciences，Guiyang 550006，China
²College of Eco-Environmental Engineering，Guizhou Minzu University，Guiyang 550025，China
³College of Agriculture，Guizhou University，Guiyang 550025，China

Received:2022-09-21 Revised:2023-01-05 Online:2023-03-25 Published:2023-04-03
Contact: *（E-mail：18985581415@189.cn）

Abstract

Abstract:

In order to develop carbon-based compound fertilizer suitable for the safe production of pepper cultivated cadmium-contaminated farmland，a pot experiment was conducted to study effects of simultaneous biochar and different nitrogen fertilizer application on the yield，quality，Cd uptake and Cd accumulation of pepper. The experiment was designed to have three treatments，biochar + amide nitrogen（control），biochar + ammonium nitrogen and biochar + nitrate nitrogen. Results showed that the fruit yield and vitamin C content of biochar + nitrate nitrogen treatment were significantly higher than those of the other two treatments. The fresh weight of pepper fruit treated with biochar + nitrate nitrogen treatment was 36.07% and 130.15% higher than that of biochar + amide nitrogen（control）and biochar + ammonium nitrogen，respectively. The vitamin C content of biochar + nitrate nitrogen treatment was 8.39% and 11.51% higher than that in biochar + amide nitrogen（control）and biochar + ammonium nitrogen treatments，respectively. The Cd content of fruits with biochar + nitrate nitrogen treatment was significantly lower than that of the other two treatments，and lower than the Chinese food safety limit（0.05 mg · kg^-1）. The translocation factor of Cd from root to stem and leaf with biochar + nitrate nitrogen treatment were significantly higher than that with biochar + ammonium nitrogen treatment. Compared with the other treatments，biochar + nitrate nitrogen treatment significantly increased the accumulation of Cd in unusable parts（root，stem and leaf）. In summary，the combination application of biochar and nitrate nitrogen can increase the yield and vitamin C content in pepper fruits，and realize the safe production of pepper cultivated cadmium-contaminated farmland. It is recommended that biochar and nitrate nitrogen fertilizer be used as raw materials for the preparation of carbon-based functional compound fertilizer.

Key words: pepper, Cd, biochar, nitrogen fertilizer, yield, quality

CLC Number:

S641.3

CHAI Guanqun, ZHANG Xiujin, ZHANG Ronghui, WANG Li, LIU Guihua, LUO Muxinjian, FAN Chengwu. Effects of Simultaneous Biochar and Nitrogen Fertilizer Application on the Yield，Quality and Cd Uptake of Pepper[J]. Acta Horticulturae Sinica, 2023, 50(3): 549-558.

Figures/Tables 5

References 36

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处理 Treatment	果实鲜质量 The weight of fresh fruit	干质量Dry weight
处理 Treatment	果实鲜质量 The weight of fresh fruit	果实Fruit	叶Leaf	茎Stem	根Root
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	215.41 ± 5.39 b	24.11 ± 4.14 b	9.13 ± 0.42 a	17.03 ± 1.54 a	5.67 ± 0.42 b
铵态氮 + 生物炭（NH₄）₂SO₄+ Biochar	127.36 ± 5.66 c	12.07 ± 1.92 c	5.10 ± 0.53 c	12.07 ± 1.43 b	4.63 ± 0.43 c
硝态氮 + 生物炭 KNO₃ + Biochar	293.12 ± 7.21 a	31.34 ± 3.42 a	7.47 ± 0.75 b	17.97 ± 1.71 a	6.77 ± 0.50 a

处理 Treatment	果实鲜质量 The weight of fresh fruit	干质量Dry weight
处理 Treatment	果实鲜质量 The weight of fresh fruit	果实Fruit	叶Leaf	茎Stem	根Root
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	215.41 ± 5.39 b	24.11 ± 4.14 b	9.13 ± 0.42 a	17.03 ± 1.54 a	5.67 ± 0.42 b
铵态氮 + 生物炭（NH₄）₂SO₄+ Biochar	127.36 ± 5.66 c	12.07 ± 1.92 c	5.10 ± 0.53 c	12.07 ± 1.43 b	4.63 ± 0.43 c
硝态氮 + 生物炭 KNO₃ + Biochar	293.12 ± 7.21 a	31.34 ± 3.42 a	7.47 ± 0.75 b	17.97 ± 1.71 a	6.77 ± 0.50 a

处理 Treatment	可溶性蛋白质/（mg · kg^-1） Soluble protein	还原糖/（g · kg^-1） Reducing sugar	维生素C/（mg · kg^-1） Vitamin C	辣椒素/ （g · kg^-1） Capsaicin
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	0.92 ± 0.16 ab	34.72 ± 1.67 a	4.29 ± 0.11 b	2.46 ± 0.15 a
铵态氮 + 生物炭（NH₄）₂SO₄ + Biochar	0.74 ± 0.11 b	33.65 ± 2.38 a	4.17 ± 0.17 b	1.74 ± 0.48 b
硝态氮 + 生物炭 KNO₃ + Biochar	1.10 ± 0.12 a	35.08 ± 2.02 a	4.65 ± 0.23 a	2.85 ± 0.51 a

处理 Treatment	可溶性蛋白质/（mg · kg^-1） Soluble protein	还原糖/（g · kg^-1） Reducing sugar	维生素C/（mg · kg^-1） Vitamin C	辣椒素/ （g · kg^-1） Capsaicin
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	0.92 ± 0.16 ab	34.72 ± 1.67 a	4.29 ± 0.11 b	2.46 ± 0.15 a
铵态氮 + 生物炭（NH₄）₂SO₄ + Biochar	0.74 ± 0.11 b	33.65 ± 2.38 a	4.17 ± 0.17 b	1.74 ± 0.48 b
硝态氮 + 生物炭 KNO₃ + Biochar	1.10 ± 0.12 a	35.08 ± 2.02 a	4.65 ± 0.23 a	2.85 ± 0.51 a

处理Treatment	果实中Cd含量（鲜质量） Cd content in fruit （Fresh weight）	Cd含量（干质量） Cd content（Dry weight）
处理Treatment	果实中Cd含量（鲜质量） Cd content in fruit （Fresh weight）	叶Leaf	茎Stem	根Root
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	0.057 ± 0.005 a	1.16 ± 0.07 ab	0.51 ± 0.09 c	2.98 ± 0.18 b
铵态氮 + 生物炭（NH₄）₂SO₄ + Biochar	0.047 ± 0.004 b	1.01 ± 0.05 b	0.63 ± 0.02 b	4.04 ± 0.24 a
硝态氮 + 生物炭KNO₃ + Biochar	0.043 ± 0.004 c	1.46 ± 0.25 a	0.70 ± 0.03 a	2.52 ± 0.19 c

Effects of Simultaneous Biochar and Nitrogen Fertilizer Application on the Yield，Quality and Cd Uptake of Pepper

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处理 Treatment	果/根 Fruit/root	叶/根 Leaf/root	茎/根 Stem/root
酰胺态氮 + 生物炭（对照） CH₄N₂O + Biochar（control）	0.21 ± 0.03 a	0.45 ± 0.12 a	0.21 ± 0.06 ab
铵态氮 + 生物炭（NH₄）₂SO₄ + Biochar	0.12 ± 0.02 b	0.26 ± 0.06 b	0.17 ± 0.05 b
硝态氮 + 生物炭 KNO₃ + Biochar	0.16 ± 0.04 ab	0.58 ± 0.12 a	0.28 ± 0.04 a

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