Evaluation and Performance of the APSIM Crop Growth Model for German Winter Wheat, Maize and Fieldpea Varieties in Monocropping and Intercropping Systems

摘要: Competition for solar radiation between plants grown in multi-species cropping systems can severely limit crop production of individual species within that system. There are various approaches modeling light interception mixed-cropping and row or strip intercropping systems. To extend the knowledge about model behavior different under interspecific competition conditions, Agricultural Production Systems Simulator (APSIM) was evaluated calibrated field experiments previously described simulated by Decision Support System Agrotechnology Transfer (DSSAT). Initially APSIM plant successfully modified to simulate wheat, maize fieldpea monocultures European agro-ecological zone. Once calibrated, then used a relay maize/wheat maize/fieldpea In DSSAT, shading algorithm introduced modify daily weather input order take into account. contrast, simulates using Beer’s law multi-component canopy conditions. After re-evaluation regarding minimum change coefficients variables, able dry matter grain yield German maize, wheat varieties adequately. However, is point-based model, many processes influence cannot be accommodated adjusting Law alone. So far none tested frameworks modeled intercropping. The governing growth numerous very diversifying complex at this point time have not been captured sufficient detail.