“…As the benefits of intercropping facilitation, yield advantage, high utilization efficiency of light and water, pest and disease suppression, biological nitrogen fixation and legume /non-legume intercropping system are widely used in the world (Ghanbari et al, 2010;Li et al, 2009). In China, half of the total grain yield is produced with multiple cropping; wheat/corn/soybean relay strip intercropping system is popular in South China (Yan et al, 2010). Plants are usually exposed to several stresses simultaneously under field conditions, with limit of light and water availability being the main environmental factors affecting relay strip *Corresponding author.…”