Effect of Combined Application of Biochar-based Fertilizer and Chemical Fertilizer on Yield and Quality of Lettuce

doi:10.11923/j.issn.2095-4050.cjas19030004

Abstract

Abstract:

To conduct scientific fertilization and realize high yield and high quality production of lettuce, we took routine fertilization as a control group, and carried out pot experiment to study the effects of different amounts of biochar-based fertilizer combined with chemical fertilizer on the yield, physiological characteristics, nitrate reductase (NR), vitamin C (Vc) and nitrate content. The results showed that the yield of lettuce under the application of chemical fertilizer was the highest, which reached 305.74 g/pot, increased by 24.42% compared with that of the control group. Compared with those of the control group, the SPAD, net photosynthetic rate and nitrate reductase increased by 8.48%, 64.53% and 29.59%, respectively. The Vc of lettuce was 132.00 mg/kg, which was 15.79% higher than that of the control. The nitrate content of lettuce decreased by 10.88% with the combination of chemical fertilizer and high-amount biochar-based fertilizer. The reduction of fertilizer reduced the nitrate content of lettuce by 15.38%-22.38%, and the nitrate content of lettuce could be significantly reduced under the combination application of fertilizer reduction and biochar-based fertilizer. The combined application of chemical fertilizer and high biochar-based fertilizer could significantly increase the yield of lettuce, promote the photosynthetic capacity and improve the quality of lettuce.

Key words: Lettuce, Biochar-based Fertilizer, Fertilizer Reduced, Fertilizer, Yield, Quality

CLC Number:

S636.2

Xu Mengze, Liang Min, Li Miaomiao, Gao Liang, Xie Faping, Wang Yilun. Effect of Combined Application of Biochar-based Fertilizer and Chemical Fertilizer on Yield and Quality of Lettuce[J]. Journal of Agriculture, 2020, 10(7): 45-49.

Figures/Tables 7

References 25

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编号	处理	基肥				追肥
编号	处理	尿素	过磷酸钙	氯化钾	炭基肥	尿素	过磷酸钙	氯化钾
T1（对照）	常规化肥	1.52	1.88	1.00	—	1.52	1.88	1.00
T2	常规化肥+低量炭基肥	1.52	1.88	1.00	25.00	1.52	1.88	1.00
T3	常规化肥+中量炭基肥	1.52	1.88	1.00	50.00	1.52	1.88	1.00
T4	常规化肥+高量炭基肥	1.52	1.88	1.00	100.00	1.52	1.88	1.00
T5	化肥减量20%+中量炭基肥	1.22	1.50	0.80	50.00	1.22	1.50	0.80
T6	化肥减量40%+中量炭基肥	0.91	1.13	0.60	50.00	0.91	1.13	0.60

编号	处理	基肥				追肥
编号	处理	尿素	过磷酸钙	氯化钾	炭基肥	尿素	过磷酸钙	氯化钾
T1（对照）	常规化肥	1.52	1.88	1.00	—	1.52	1.88	1.00
T2	常规化肥+低量炭基肥	1.52	1.88	1.00	25.00	1.52	1.88	1.00
T3	常规化肥+中量炭基肥	1.52	1.88	1.00	50.00	1.52	1.88	1.00
T4	常规化肥+高量炭基肥	1.52	1.88	1.00	100.00	1.52	1.88	1.00
T5	化肥减量20%+中量炭基肥	1.22	1.50	0.80	50.00	1.22	1.50	0.80
T6	化肥减量40%+中量炭基肥	0.91	1.13	0.60	50.00	0.91	1.13	0.60

处理	Pn/[μmol/(m²·s)]	Gs/[mmol/(m²·s)]	Ci/(μmol/mol)	Tr/[mmol/(m²·s)]
T1	3.88b	0.13a	322.82a	4.23b
T2	5.02ab	0.14a	323.17a	5.52ab
T3	5.15ab	0.14a	323.94a	6.03ab
T4	6.39a	0.21a	330.85a	7.28a
T5	5.26ab	0.16a	333.27a	6.22a
T6	4.15b	0.14a	320.42a	5.96ab

处理	Pn/[μmol/(m²·s)]	Gs/[mmol/(m²·s)]	Ci/(μmol/mol)	Tr/[mmol/(m²·s)]
T1	3.88b	0.13a	322.82a	4.23b
T2	5.02ab	0.14a	323.17a	5.52ab
T3	5.15ab	0.14a	323.94a	6.03ab
T4	6.39a	0.21a	330.85a	7.28a
T5	5.26ab	0.16a	333.27a	6.22a
T6	4.15b	0.14a	320.42a	5.96ab