云南澜沧县景迈古茶园土壤养分和土壤酶活性研究

doi:10.13305/j.cnki.jts.2008.03.008

Abstract

Abstract: Ancient tea gardens in Yunnan Province are regarded as the provenance of Pu-erh Tea, and the ancient tea garden (ATG) in Jingmai, Lancang County is a typical example of cultivated ATGs. In order to investigate soil nutrients and enzyme activity, the ATG soil in Jingmai and its neighboring conventional tea garden (CTG) and forest soils were sampled. Soil pH, organic matter (OM), total N (TN), total P (TP), total K (TK), alkaline hydrolyzed N (AN), available P (AP), available K (AK), Ca, Al, Mg, activity of acid phosphatase, catalase, urease and saccharase were analyzed. The results showed that (1) All the soils were acid and at a pH of 3.80~3.91, and pH in tea garden soils was lower than in forest soil. (2), The OM, N, P and soil enzyme activity were rich in top soil (0~20 cm) and poor under 20 cm in different soil layers, while K, Mg and Al showed no obvious difference in different layers. (3) OM was rich in all soils, and the contents of OM, TN and AN were CTG < ATG < forest, while TP and AP were richest in ATG. (4) Enzyme activity showed different distribution patterns in the three soils. (5) Soil pH correlated with metal elements, N existed the most significant correlation with other nutrients, and soil nutrients did certain correlation with soil enzymes, especially N, C, P, K.

Key words: ancient tea garden, conventional tea garden, forest, soil nutrients, enzyme activity

CLC Number:

S571.1
S154

JIANG Hong, SHA Li-qing. Characteristics of Soil Nutrients and Enzyme Activity of Ancient Tea Garden in Jingmai, Lancang, Yunnan Province[J]. Journal of Tea Science, 2008, 28(3): 214-220.

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Characteristics of Soil Nutrients and Enzyme Activity of Ancient Tea Garden in Jingmai, Lancang, Yunnan Province

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