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[Simulation model for the crop development stages in sunflower-potato intercropping]
Fang Gou1, Li-Zhen Zhang, Wan-Lin Dong
1College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China. goufang041@163.com
Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|January 31, 2013
Summary
A new model accurately simulates potato and sunflower development in intercropping systems, crucial for optimizing this Chinese farming practice. The model shows high accuracy, with prediction errors below 5%.
Area of Science:
- Agricultural Science
- Crop Modeling
- Agronomy
Context:
- Potato-sunflower intercropping is a common system in China's agricultural-pastoral ecotone.
- Accurate phenological simulation is vital for assessing and optimizing intercropping systems.
Purpose:
- To develop and validate a simulation model for potato and sunflower phenological development in monoculture and intercropping systems.
- To assess the model's accuracy using field experimental data.
Summary:
- A simulation model was established based on physiological development times for potato and sunflower.
- The model was validated using field data from 2010-2011, showing good fitness between simulated and observed development stages.
- The root mean square error (RMSE) for key development stages (sowing to mature) was low (1.2-2.9 days), with prediction errors under 5%.
Impact:
- The model demonstrates strong mechanistic properties, explanatory power, and adaptability.
- It serves as a valuable tool for research on crop growth and development in intercropping systems.
