Using Mathematical Models to Study the Influences of Different Ratios of Chemical Nitrogen, Phosphorus, and Potassium on the Content of Soluble Protein, Vitamin C, and Soluble Sugar in Melon

Shuangxi Li, Zhaohui Zhang, Juanqin Zhang, Xianqing Zheng, Hanlin Zhang, Haiyun Zhang, Yue Zhang, Naling Bai () and Weiguang Lv ()
Additional contact information
Shuangxi Li: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Zhaohui Zhang: Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai 201403, China
Juanqin Zhang: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Xianqing Zheng: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Hanlin Zhang: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Haiyun Zhang: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Yue Zhang: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Naling Bai: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Weiguang Lv: Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

IJERPH, 2022, vol. 20, issue 1, 1-15

Abstract: The current fertilizer recommendations for melon plantation have many limitations and exhibit deficiencies regarding future development. Therefore, in this study, the optimal quantities of fertilizer, in terms of the effects of single factors and interaction effects, are studied. There were significant interaction effects between N and P, N and K, P and K; the contents of soluble protein, vitamin C (Vc), and soluble sugar in melon could be improved using the optimal fertilization ratios. The optimal ratio of N:P:K was 2.33:1:3.85, with the amounts of N, P 2 O 5 , and K 2 O, respectively, being 157.5, 67.58, and 260.38 kg/hm 2 , yielding 8.73 g/kg of soluble protein in melon. The optimal ratio of N:P:K was 2.03:1:3.36, with amounts of N, P 2 O 5 , and K 2 O being 157.50, 77.40, and 260.38 kg/hm 2 , respectively, yielding 25.32 g/kg Vc content in melon. Finally, the optimal ratio of N:P:K was 1.53:1:3.36, with the amounts of N, P 2 O 5 , and K 2 O being 118.07, 77.40, respectively, and 260.38 kg/hm 2 , yielding 13.34% soluble sugar content in melon.

Keywords: balanced fertilization; melon quality; mathematic model; regression equation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/20/1/283/pdf (application/pdf)
https://www.mdpi.com/1660-4601/20/1/283/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:20:y:2022:i:1:p:283-:d:1013790

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().