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当前位置: 首页 > 文章 > Soil Microbiological and Biochemical Properties as Affected by Different Long-Term Banana-Based Rotations in the Tropics 土壤圈(英文版) 2015,25 (6)
Position: Home > Articles > Soil Microbiological and Biochemical Properties as Affected by Different Long-Term Banana-Based Rotations in the Tropics Pedosphere 2015,25 (6)

Soil Microbiological and Biochemical Properties as Affected by Different Long-Term Banana-Based Rotations in the Tropics

作  者：
Shuang Zhong;Huicai Zeng;Zhiqiang Ji
单  位：
Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 570102 (China;Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 570102 (China);Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 570102 (China); Hainan Key Laboratory of Banana Genetic Improvement, Haikou 570102 (China)
关键词：
banana;rotations;cm;ab;bb;soi
摘  要：
Soil microbiological and biochemical properties under various field crop rotations such as grains, pastures and vegetables have been studied intensively under short-term period. However, there is limited information about the influence of banana-based rotations on soil organic C, total N (TN), microbial biomasses and enzyme activities under long-term crop rotations. A field experiment arranged in a randomized complete block design with three replicates was carried out at the Wanzhong Farm in Ledong (18 degrees 37'-18 degrees 38' N, 108 degrees 46'-108 degrees 48' E), Hainan Province, China, to compare the responses of these soil parameters to long-term (10-year) banana (Musa paradisiaca)-pineapple (Ananas) rotation (AB), banana-papaya (Carica) rotation (BB) and banana monoculture (CK) in a conventional tillage system in the Hainan Island. Soil pH, total organic C (TOC), dissolved organic C (DOC), TN, total P (TP) and available P (AP) were found to be significantly higher (P < 0.01) in AB and BB than CK at 0-30 cm soil depth. Microbial biomass C (MBC) and N (MBN) were observed 18.0%-35.2% higher in AB and 8.6%-40.5% higher in BB than CK at 0-30 cm. The activities of urease (UA), invertase (IA), dehydrogenase (DA) and acid phosphatase (APA) showed a mean of 21.5%-59.6% increase in AB and 26.7%-66.1% increase in BB compared with CK at 0-30 cm. Higher pH, TOC and DOC at 0-10 and 10-20 cm than at 20-30 cm were obtained despite of the rotations. Soil MBC and MBN and activities of UA, IA and DA decreased markedly (P < 0.01) with increasing soil depth in the different rotation soils. as well as the monoculture soil. In general, soil microbial biomass and enzymatic activities were more sensitive to changes in banana-based rotations than soil chemical properties, and consequently they were well-established as early indicators of changes due to crop rotations in the tropics.

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