Characterization of Orchard Fields Based on Soil Fertility Index (SOFIX)

• 作者: Kenzo Kubota Kiwako S. Araki Motoki Kubo Pitchayapa Pholkaw Quoc Thinh Tran Taiki Kawagoe Takamitsu Kai
• 来源期刊: 农业化学和环境(英文)
• 学科: 农学
• 关键词: Orchard Field Soil Fertility Index (SOFIX) Bacterial Biomass
• 年，卷（期）: nyhxhhjyw_2020,（3）
• 页码范围: 159-176
• 页数: 18页
• 分类号: S15

摘要

Soil samples from 139 agricultural orchard fields (apple, grape, tea, and others) w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> analyzed using the soil fertility index. From these samples, an orchard field database was constructed and the soil properties between orchard, upland, and paddy fields </span><span style="font-family:Verdana;">were </span><span style="font-family:""><span style="font-family:Verdana;">compared. The average value of bacterial biomass in the orchard fields was 7.4 × 10</span>^{<span style="font-family:Verdana;">8</span>}<span style="font-family:Verdana;"> cells/g-soil, ranging from not detected (lower than 6.6 × 10</span>^{<span style="font-family:Verdana;">6</span>}<span style="font-family:Verdana;"> cells/g-soil) to 7.7 × 10</span>^{<span style="font-family:Verdana;">9</span>}<span style="font-family:Verdana;"> cells/g-soil. The average values of total carbon (TC), total nitrogen (TN), total phosphorus (TP), and total potassium (TK), were 24,000 mg/kg (2670 to 128,100 mg/kg), 1460 mg/kg (133 to 6400 mg/kg), 1030 mg/kg (142 to 5362 mg/kg), and 5370 mg/kg (1214 to 18,155 mg/kg), respectively. The C/N and C/P ratios were 19 (3 to 85) and 27 (2 to 101), respectively. Soil properties of the orchard fields were compared with those of the upland and the paddy fields. The average value of bacterial biomass in the orchard fields was almost the same as that in the upland fields (8.0 × 10</span>^{<span style="font-family:Verdana;">8</span>}<span style="font-family:Verdana;"> cells/g-soil), but the number was lower than that in the paddy fields (12.9 × 10</span>^{<span style="font-family:Verdana;">8</span>}<span style="font-family:Verdana;"> cells/g-soil). The average values of TC and TN in the orchard fields fell between those in the upland fields (TC: 33,120 mg/kg, TN: 2010 mg/kg) and the paddy fields (TC: 15,420 mg/kg, TN: 1080</span></span><span style="font-family:""> </span><span style="font-family:Verdana;"