Site-specific analysis of soil-plant-climate interactions on maize

Revista Brasileira de Engenharia Agrícola e Ambiental

Prado, Hélio do²  Santos, Antonio O.¹ 

[1] Centro de Engenharia Agrícola;Centro de Cana-de-açúcar

关键词: Ceres-Maize;    agrometeorology;    soil-water;    Zea mays L;   

DOI  :  10.1590/S1415-43662002000100018

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

Taking into account the very large area of corn crop in Brazil along side the constant demand for the improvement of crop management, there is a need for further investigation into the new methodologies for the treatment of inputs required by the production system. Maize yield studies have demonstrated significant spatial and time-related variability along the growing seasons. The simulation of the crop development may serve while discussing the variability and its effects on yield, as well as for data integration, when looking for useful information. This happens, mainly when moving from a homogeneous treatment of cultivated field toward a site-specific based management; where the difference in potential yield is due to occur, inside the same cultivated area. In accordance with the Ceres-Maize model, soil, plant and climate data, were collected in a corn growing area, located around the Angatuba (Sao Paulo), Brazil, at the Vale do Parapanema region (23º33' S; 48º18' W; 670 m). The simulation of yield related properties, for a single growing season and for a medium term climatic series of data was performed, in three separate soil units. The Ceres-Maize model allows the simulation of corn development on a daily-step basis, based upon a balance of carbon, nitrogen and water, provided that

【 授权许可】

CC BY-NC