Effects of Bio-organic Fertilizer Combined with Fertilizer of Silicon-Calcium-Potassium-Magnesium on Watermelon Yield, Quality and Soil Nutrients

doi:10.11923/j.issn.2095-4050.cjas2021-0029

Abstract

Abstract:

To scientifically reduce the amount of chemical fertilizer application and improve the soil structure and environment, we used ‘L600’ watermelon as the research object, and set up four treatments including bio-organic fertilizer combined with silicon-calcium-potassium-magnesium fertilizer and reducing the amount of base fertilizer and chemical fertilizer. Conventional fertilization was used as the control to study the effects of the above fertilizers on the yield, quality and soil nutrients of watermelon. The results showed that: compared with conventional fertilization, the combined application of bio-organic fertilizer with silicon-calcium-potassium-magnesium fertilizer could increase watermelon yield by 8.05%, heart sugar content by 13.08%, side sugar content by 5.77%, vitamin C content by 18.57%, and decrease the total acid content by 31.25% and nitrate content by 18.22%. The combined application of the two fertilizers had positive effects on improving the soil environment, and the soil pH, available phosphorus content and available potassium content were significantly higher than those of conventional fertilization. Under these conditions, reducing the application of base fertilizer and chemical fertilizer could ensure the yield and quality of watermelon, which is an effective method of reducing fertilizer application.

Key words: watermelon, reduced fertilization, bio-organic fertilizer, fertilizer of silicon-calcium-potassium-magnesium, yield, quality, soil nutrient

CLC Number:

S147.5

ZHAO Yue, HUANG Nan, LIU Jipei. Effects of Bio-organic Fertilizer Combined with Fertilizer of Silicon-Calcium-Potassium-Magnesium on Watermelon Yield, Quality and Soil Nutrients[J]. Journal of Agriculture, 2022, 12(9): 37-41.

Figures/Tables 5

References 26

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处理	商品有机肥/(t/hm²)	生物有机肥/(t/hm²)	硅钙钾镁肥/(kg/hm²)	复混肥/(kg/hm²)	水溶肥/(kg/hm²)
T1	45	0	0	600	375
T2	37.5	7.5	0	600	375
T3	45	0	750	600	375
T4	37.5	7.5	750	600	375
T5	37.5	7.5	750	300	375

处理	商品有机肥/(t/hm²)	生物有机肥/(t/hm²)	硅钙钾镁肥/(kg/hm²)	复混肥/(kg/hm²)	水溶肥/(kg/hm²)
T1	45	0	0	600	375
T2	37.5	7.5	0	600	375
T3	45	0	750	600	375
T4	37.5	7.5	750	600	375
T5	37.5	7.5	750	300	375

处理	心糖/%	边糖/%	维生素C/(mg/kg)	总酸/%	硝酸盐/(mg/kg)
T1	10.7c	10.4b	77.53b	0.48a	127.3a
T2	11.2b	10.9a	81.90b	0.36b	101.7b
T3	11.4b	10.7ab	82.97b	0.33b	126.4a
T4	12.1a	11.0a	91.93a	0.33b	104.1b
T5	11.9b	10.9a	90.13a	0.30b	92.1b

处理	心糖/%	边糖/%	维生素C/(mg/kg)	总酸/%	硝酸盐/(mg/kg)
T1	10.7c	10.4b	77.53b	0.48a	127.3a
T2	11.2b	10.9a	81.90b	0.36b	101.7b
T3	11.4b	10.7ab	82.97b	0.33b	126.4a
T4	12.1a	11.0a	91.93a	0.33b	104.1b
T5	11.9b	10.9a	90.13a	0.30b	92.1b

处理	有机质/(g/kg)	碱解氮/(mg/kg)	有效磷/(mg/kg)	速效钾/(mg/kg)	pH
T1	20.4a	215.8a	343.9c	432.4c	7.32b
T2	21.1a	210.2a	364.2bc	435.3bc	7.37b
T3	20.3a	208.2a	393.4a	454.0ab	7.96a
T4	20.7a	221.8a	397.5a	473.0a	7.90a
T5	20.8a	203.0a	374.4ab	450.9bc	7.97a