关键词: 瓜蒌, "3414"施肥方案, 熵权法, 灰色关联度分析法

Abstract: [Objective] The quality of Fructus trichosanthis was used by "3414" fertilizer protocol, which could be laid the foundation for the development of special fertilizer. [Method] The fruit of Fructus trichosanthis was collected and measured by the fresh weight, dry fruit weight, pericarp thickness, peel weight, pulp weight, 1 000 grain weight, ash, extract content, soluble sugar content, saponin content, free amino acids content, adenosine content, 3, 29-Dibenzoyl rarounitriol content, separately;Based on the entropy weight method, the grey relational grade analysis method was used to evaluate the optimal ratio of fertilizer application. [Results] Results indicated that effects of different treatments on different components were not samilar, of which N₁P₂K₂ had the greatest effect on Trichosanthes weight;the effect of N₂P₀K₂ was the greatest on pericarp thickness and ash;the effect of N₂P₁K₂ was the greatest on the content of free amino acid; the effect of N₂P₂K₂ was the greatest on the extract content;the effect of N₂P₃K₂ was the greatest on flesh weight and 3, 29-Dibenzoyl rarounitriol content;the effect of N₂P₂K₃ was the greatest on seed weight, soluble sugar and ginsenoside content;the effect of N₃P₂K₂ was the greatest on pericarp weight and maximum amount of adenosine;Based on the weighted grey relational degree analysis, N₂P₂K₃(N:300 kg/hm², P:450 kg/hm², K:360 kg/hm²) was the optimal ratio of fertilizer applica-tion for Fructus trichosanthis. [Conclusion] Fertilization had a great effect on the properties and chemical composition of Fructus trichosanthis, effects of different fertilization levels on each index are different. The effects of fertilization on growth traits and chemical composition index were investigated by the system of grey relational degree analysis based on the entropy method, it can be drived the optimum rate of fertilizer. The theoretical basis provided in the study would be available for the research of quantitative fertilization and special fertilizer.

Key words: Fructus trichosanthis, "3414" fertilizer experiment, the entropy method, the grey relational grade analysis method