Estimation of crop lodging has been extensively investigated. However, mechanisms concerning the variation of crop lodging resistance at different stages of lifecycle during maturation are still unclear. Here, we develop a simplified Euler buckling model to estimate the effect of gradient structural parameters on the lodging resistance and material utilization of rice stem. Three-point bending test was carried out to obtain the stiffness gradient of rice stem. Experimental results show that green rice stem has relatively high material utilization and lodging resistance. When rice stem becomes ...
