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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (10): 2207-2219.doi: 10.16420/j.issn.0513-353x.2022-0481

• Cultivation Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Organic Fertilizer Replacement on Soil Nutrients in Tea Garden and Yield-quality of Tea Plant

SHU Zaifa, JI Qingyong, SHAO Jingna, ZHENG Shenghong, ZHOU Huijuan, HE Weizhong*()   

  1. Lishui Academy of Agriculture and Forestry Sciences,Lishui,Zhejiang 323000,China
  • Received:2023-03-31 Revised:2023-07-31 Online:2023-10-25 Published:2023-10-30

Abstract:

The effect of soil nutrients and tea yield and quality to different fertilization structures was studied by using the‘Jingbai 1’tea cultivar as experimental material through five fertilization treatments: no fertilization,conventional fertilization,100% chemical fertilizer fertilization,30% organic fertilizer substitution and 100% organic fertilizer substitution. The results of three-year experiment showed that fertilization treatments significantly increased the contents of soil organic matter,total nitrogen (N),available phosphorus (P),available potassium (K) and available magnesium (Mg),and increased the absorption of N,P,K and Mg. Whereas organic fertilizer substitution treatment showed divergent variation in nutrient absorption. Meanwhile,fertilization treatments displayed a positive effect on tea yield. 30% organic fertilizer substitution treatment revealed the highest increase in tea yield with a 27.28% average increase in the three years. In addition,the components of tea quality showed diverse responses to different treatments. When compared with no fertilization,other fertilization treatments promoted the accumulation of free amino acids,decreased the polyphenol/amino acids. After three years,compared to no fertilization treatment,other fertilization treatments decreased the contents of GA,EC,EGCG,EC,ester catechin,Non-ester catechin and total catechin. Furthermore,conventional fertilization and 30% organic fertilizer substitution treatments increased the caffeine content compared with no fertilization treatment. Meanwhile,fertilization treatment increased the content of umami amino acid,organic fertilizer substitution treatment increased obviously. In summary,the results showed that 30% organic fertilizer substitution treatment can effectively improve the tea yield and quality.

Key words: fertilization structure, soil nutrient, tea yield, tea quality