Physical and Biochemical Properties of Apple Orchard Soils of Different Productivities
Physical and Biochemical Properties of Apple Orchard Soils of Different Productivities作者机构：Department of Biotechnology Faculty of Life Sciences Ritsumeikan University Biwako-Kusatsu Campus Kusatsu Shiga 525-8577 Japan
出 版 物：《Open Journal of Soil Science》 (土壤科学期刊（英文）)
年 卷 期：2015年第5卷第7期
页 面：149-156页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
主 题：Apple Orchard Soil Physical Properties Biochemical Properties Fruit Yield
摘 要：Physical and biochemical properties of apple orchard soils of different productivities (orchard A: 30 t·haǃorchard B: 20 t·haǃ) were analyzed. Most of the physical properties were similar in both orchards. In orchard A, the horizontal saturated hydraulic conductivity at 10-cm depth was 16.42 cm·dayǃ, and was about four times higher than that in orchard B (4.41 cm·dayǃ). Total carbon, total nitrogen, and total phosphorus were about two times higher in orchard B soil, whereas total potassium, bacterial biomass, nitrification, and phosphorus mineralization activities were similar in both orchards. Excess nutrients accumulated on the top 15 cm layer of orchard B soil because the topographical and physical conditions were associated with reduced apple productivity. Appropriate management of fallen leaves and reduction of chemical fertilizer seem necessary for a high level of apple productivity.
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