a method for stimulating an induced insect resistance of rice is provided , which is effective to rice planthoppers , including nilaparvata lugens , sogatella furcifera , and laodelphax striatellus . the present invention increases the resistance of the rice against rice planthoppers through p - fluorophenoxyacetic acid , thereby decreasing damages of the rice planthoppers to the rice . through applying the p - fluorophenoxyacetic acid having a certain concentration to the rice , the rice generates the induced resistance against the rice planthoppers , which obviously decreases a survival rate of nymphs of the rice planthoppers .