Partial Replacement of Chemical Fertilizer with Organic Fertilizer: Effects on Eggplant Yield, Quality and Soil Fertility

doi:10.11924/j.issn.1000-6850.casb2020-0433

Abstract

Abstract:

The excessive application of chemical fertilizer can degrade vegetable quality and reduce fertilizer utilization rate, so we investigated the appropriate replacement ratio of chemical fertilizer with organic fertilizer and the suitable kinds of organic fertilizers in Sucheng, and studied the effects of partial replacement of chemical fertilizer with organic fertilizer on eggplant yield, quality and soil fertility. The results showed that 40% of chemical fertilizer replacement with organic fertilizer was better than 30% replacement. Compared with the conventional fertilization, the yield of organic fertilizer replacement was increased by 5.17%, the nitrogen use efficiency was increased by 10.49%, the eggplant soluble sugar content was increased by 9.09%, Vc content was increased by 12.31%, nitrate content was decreased by 7.09%, soil organic matter content was increased by 17.06%, and alkaline soil pH decreased by 2.92%. The study suggests that reducing nitrogen fertilizer and increasing organic fertilizer are effective ways to improve eggplant yield, quality and soil fertility. Baikenong organic fertilizer is suitable for improving soil fertility, and Wolubao organic fertilizer is suitable for improving eggplant quality.

Key words: organic fertilizer, eggplant, yield, quality, soil fertility

CLC Number:

S143.7
S531

Yuan Qi, Feng Bing, Zhong Yuehua, Wang Jing, Xu Xianju, Ma Hongbo. Partial Replacement of Chemical Fertilizer with Organic Fertilizer: Effects on Eggplant Yield, Quality and Soil Fertility[J]. Chinese Agricultural Science Bulletin, 2021, 37(34): 59-63.

Figures/Tables 3

References 25

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处理	产量/(kg/20 m²)	氮肥利用率/%
不施氮肥	108.33b
常规施肥	120.83ab	37.62a
百可农有机肥替代化肥30%	122.92ab	39.17a
百可农有机肥替代化肥40%	129.17a	40.41a
沃绿宝有机肥替代化肥30%	125.00a	39.74a
沃绿宝有机肥替代化肥40%	127.08a	41.57a

处理	产量/(kg/20 m²)	氮肥利用率/%
不施氮肥	108.33b
常规施肥	120.83ab	37.62a
百可农有机肥替代化肥30%	122.92ab	39.17a
百可农有机肥替代化肥40%	129.17a	40.41a
沃绿宝有机肥替代化肥30%	125.00a	39.74a
沃绿宝有机肥替代化肥40%	127.08a	41.57a

处理	Vc/(mg/100 g)	糖/%	硝酸盐/(mg/kg)
不施氮肥	0.81b	4.36a	155.70a
常规施肥	1.38a	4.40a	163.26a
百可农有机肥替代化肥30%	1.42a	4.40a	161.88a
百可农有机肥替代化肥40%	1.45a	4.76a	151.67a
沃绿宝有机肥替代化肥30%	1.47a	4.60a	162.44a
沃绿宝有机肥替代化肥40%	1.55a	4.80a	153.35a

处理	Vc/(mg/100 g)	糖/%	硝酸盐/(mg/kg)
不施氮肥	0.81b	4.36a	155.70a
常规施肥	1.38a	4.40a	163.26a
百可农有机肥替代化肥30%	1.42a	4.40a	161.88a
百可农有机肥替代化肥40%	1.45a	4.76a	151.67a
沃绿宝有机肥替代化肥30%	1.47a	4.60a	162.44a
沃绿宝有机肥替代化肥40%	1.55a	4.80a	153.35a

处理	pH	有机质/(g/kg)	碱解氮/(mg/kg)	有效磷/(mg/kg)	速效钾/(mg/kg)
不施氮肥	7.92a	14.89c	53.13b	31.04b	303.5a
常规施肥	7.87a	14.98b	54.28ab	35.76ab	338a
百可农有机肥替代化肥30%	7.79a	15.38ab	57.67ab	32.80ab	341.5a
百可农有机肥替代化肥40%	7.74a	15.83a	62.14a	40.84a	354.5a
沃绿宝有机肥替代化肥30%	7.67a	15.16ab	57.29ab	37.16ab	351a
沃绿宝有机肥替代化肥40%	7.64a	15.59ab	60.75ab	39.16a	357a