Oolong Tea: Change of Rhizosphere Soil Fertility and Leaves Quality Without Fertilization

doi:10.11924/j.issn.1000-6850.casb16020022

Abstract

Abstract: The paper aims to analyze the change of rhizosphere soil nutrient and quality of tea tree leaf, ‘Jinguanyin’, ‘Tieguanyin’ and ‘Huangjingui’ were used as materials, and physicochemical indexes of soil and quality indexes of tea tree leaf were measured under no fertilization in 2 years. The results showed that: (1) pH values of rhizosphere soil of the 3 kinds of tea trees all decreased with the increase of planting years; contents of organic matter and total nitrogen (N) were up toⅠ-level, and contents of total phosphorus (P) were up to Ⅲ-level; contents of total potassium (K) were at Ⅱ-level in 0-year-old soil and at Ⅲ-level in the 1-year-old and 2-year-old soil; contents of available N and K were at Ⅰ-level, Ⅱ-level, and Ⅲ-level in the 0-year-old, 1-year-old and 2-year-old soil, respectively; and contents of available P were at Ⅰ-level in the 0-year-old and 1-year-old soil, and Ⅲ-level in the 2-year-old soil; (2) quality indicators and indexes of tea tree leaf showed a downward trend with the increase of planting years under no fertilization, i.e., the change of contents of polyphenols was little, but that of theanine and caffeine had extremely significant difference. In conclusion, the demand characteristics of the 3 kinds of tea trees on soil nutrient differed under no fertilization may lead to the change of rhizosphere soil nutrient components, and then influence synthesis and accumulation of secondary metabolites related to the quality of tea tree leaf.

CLC Number:

S571.1

Ye Jianghua,Wang Haibin,Chen Xiaoting and Jia Xiaoli. Oolong Tea: Change of Rhizosphere Soil Fertility and Leaves Quality Without Fertilization[J]. Chinese Agricultural Science Bulletin, 2016, 32(28): 160-165.

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