Soil enzyme activity in the rhizosphere of Humulus lupulus plants of different ages

Abstract

Abstract: The effects of different aged hops (Humulus lupulus) on the activities of catalase, urease, neutral phosphatase and polyphenol oxidase were studied in a field experiment. The activity of catalase, urease and neutral phosphatase of rhizospheric soil was significantly greater than that of non-rhizospheric soil, but the activity of polyphenol oxidase was significantly less. With an increase in hop age, catalase activity decreased markedly, urease activity markedly increased, while the activity of neutral phosphatase and polyphenol oxidase increased initially but then decreased with age. The catalase activity decreased significantly by 14.80%, 24.34%, 23.03%, and 22.04% for the 8, 18, 20, and 22-ages, respectively compared with the 5-age, while the corresponding urease activity increased by 3.96%, 30.35%, 80.99% and 106.33%, even though no significant difference was observed for the 8-age. The yield of hops at 18 and 20 ages was significantly higher than that of other treatments, and the content of α-acid at 5 and 8 ages was significantly higher than that of other treatments.

CLC Number:

ZHANG En-he, ZHANG Xin-hui. Soil enzyme activity in the rhizosphere of Humulus lupulus plants of different ages[J]. Acta Prataculturae Sinica, 2010, 19(6): 35-40.

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