Effect of different application rates of organic fertilizer on soil enzyme activity and microbial population(Soil Biology)

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概要

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• After cultivating 24 crops of vegetables for three consecutive years in a greenhouse, the effects of different application rates of compost (Rate 1, 270kg N ha^<-1> y^<-1>; Rate 2, 540kg N ha^<-1> y^<-1>; Rate 3, 810kg N ha^<-1> y^<-1>; Rate 4, 1,080kg N ha^<-1> y^<-1>) were compared with the effects of chemical fertilizer (CF) and no application of fertilizer treatments (CK) for some selected soil chemical properties, microbial populations and soil enzyme activities (dehydrogenase, cellulase, β-glucosidase, protease, urease, arysulphatase, and acid and alkaline phosphatases). The results show that the pH, electrical conductivity, concentrations of total nitrogen (N) and the organic matter received from compost treatment were generally higher than those received through CF treatment. The soil microbial biomass, populations of bacteria, fungi and actinomycetes, as well as soil enzyme activities increased significantly in the compost-treated soils compared with the CF-treated soil. In most instances, no significant increase was observed in the enzymatic activities studied for compost applications higher than a Rate 2 treatment. However, all enzymatic activities examined showed significant linear correlations with the organic matter contents of the soils. The vegetable yield reached its highest level at the Rate 2 treatment and declined or leveled off in the higher treatments, implying that a high application rate of compost cannot further increase the crop yield after the soil fertility has been established. High organic matter content in the soil was found to alleviate the adverse effect of soluble salts on vegetable growth. In conclusion, an application rate of compost at Rate 2, 540kg N ha^<-1> y^<-1>, is adequate on the basis of vegetable yields and soil chemical, biochemical and enzymatic properties in greenhouse cultivation under subtropical climatic conditions.

• 社団法人日本土壌肥料学会の論文

著者

• CHANG Ed-Haun

  Department of Nursing, Mackay Medicine, Nursing and Management College

• CHUNG Ren-Shih

  Department of Agricultural Chemistry, National Taiwan University

• Chang Ed‐haun

  Nursing And Management Coll. Taipei

• Chang Ed-haun

  Department Of Nursing Mackay Medicine Nursing And Management College

• Chung Ren‐shih

  National Taiwan Univ. Taipei

• Chung Ren-shih

  Department Of Agricultural Chemistry National Taiwan University

• TSAI Yuong-How

  Chinan Branch Station, Kaohsiung District Agricultural Research and Extension Station

• Tsai Yuong-how

  Chinan Branch Station Kaohsiung District Agricultural Research And Extension Station

関連論文

• Effect of different types of organic fertilizers on the chemical properties and enzymatic activities of an Oxisol under intensive cultivation of vegetables for 4 years(Fertilizers and Soil Amendments)
• Effect of different application rates of organic fertilizer on soil enzyme activity and microbial population(Soil Biology)
• Soil microbial community structure and microbial activities in the root zone of Nothapodytes nimmoniana(Fertilizers and soil amendments)
• Soil microbial community structure and microbial activities in the root zone of Nothapodytes nimmoniana

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