Abstract:

To investigate the effect of foliar application of iron chlorine e6 on the lodging resistance of rice stems and their morphological and physiological characteristics, a field experiment was conducted using japonica rice variety W3668. Foliar application of iron chlorine e6, especially at the jointing stage, was proved to be an effective method for enhancing the lodging resistance of rice stems. Application at the jointing stage significantly increased stem diameter and both the inner and outer diameters of the stem, while application at the seedling stage notably increased stem wall thickness. Moreover, compared with foliar application at the seedling stage, application at the jointing stage more effectively controlled the elongation of the basal internodes and significantly enhanced their filling, thereby increasing the mechanical strength of the stems. In terms of yield, the jointing stage application significantly improved rice yield by increasing the number of grains per panicle and the seed-setting rate, thus optimizing the yield components. The study indicates that iron chlorine e6 application at the jointing stage has a remarkable effect on improving both rice lodging resistance and yield.

Key words: japonica rice, W3668, lodging resistance, iron chlorine e6