[Strong stem effect and physiological characteristics of rice plant under rice-duck farming].

A field plot comparison experiment was conducted to study the strong stem effect and physiological characteristics of rice plant under rice-duck farming. The results showed that under rice-duck farming, the morphology of rice plant changed obviously, and the carbohydrate content and C/N ratio of the plant as well as the dry matter output from rice stem increased significantly, due to the activities of duck in paddy field. In the meantime, the length of basal internodes decreased by 2.