Physical and Biochemical Properties of Apple Orchard Soils of Different Productivities

• 作者: Dinesh Adhikari Kiwako S. Araki Masaki Mukai Motoki Kubo Takamitsu Kai
• 来源期刊: 土壤科学期刊(英文)
• 学科: 农学
• 关键词: Apple ORCHARD Soil PHYSICAL PROPERTIES BIOCHEMICAL PROPERTIES FRUIT YIELD
• 年，卷（期）: 2015,（7）
• 页码范围: 149-156
• 页数: 8页
• 分类号: S15

摘要

Physical and biochemical properties of apple orchard soils of different productivities (orchard A: 30 t&#183haǃorchard B: 20 t&#183ha&#451) 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&#183day&#451, and was about four times higher than that in orchard B (4.41 cm&#183day&#451). 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.