สืบค้นงานวิจัย
Evaluation of erosion productivity impact calculator (EPIC) model for nitrogen losses in rice paddy of Thailand
Arunrat N. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Evaluation of erosion productivity impact calculator (EPIC) model for nitrogen losses in rice paddy of Thailand
ผู้แต่ง / หัวหน้าโครงการ (EN): Arunrat N.
บทคัดย่อ (EN): Rice fields are commonly characterized by flooding conditions and high percolation rate. Nitrogen (N) is the most important nutrient for rice yield and is required in large quantities. In this article, the Erosion Productivity Impact Calculator (EPIC) 0509 version was used and was run using i-EPIC (interactive EPIC) interface, to validate this version and evaluate N losses in mineral rice soils. The results indicated that N losses of rice soil in terms of N loss in sediment, nitrate (N03) loss via runoff, NOgloss in subsurface and NOg leaching. The results revealed that the northern region of Thailand had the maximum average of 9.58 kg ha-1 during the major rice season, followed by the central, eastern, western, northeastern and southern regions, respectively. In the second rice season, NOg loss in the western region had the maximum average of 25.52 kg ha-1, followed by the northern, central, eastern, northeastern and southern regions, respectively. In terms of N pool (humus mineralization, slow humus N pool, passive humus N pool, total N pool) the eastern region had the maximum average of 4,475.33 kg ha-1 during the major rice season, followed by the central, southern, northern, northeastern and western regions, respectively. Whereas, the second rice season found that the eastern region had also the maximum average of 6,909.03 kg ha-1, followed by the central, southern, northern, northeastern and western regions, respectively. Furthermore, EPIC-simulated hydrology found that precipitation, runoff, percolation and soil temperature share a positive relationship with major rice yield. © 2014 Knowledgia Review, Malaysia.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898045018&doi=10.3923%2fajar.2014.70.83&partnerID=40&md5=980dcb9fb1773e5e282bae5241e53309
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Thailand
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

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