The invention discloses a method for detecting sensibility of
brown planthopper to medicament. The method comprises following steps: A, medicament preparation:
nitenpyram original
medicine is dissolved by
acetone to be prepared into
pesticide mother solution, and the mother solution is dissolved by
acetone to be prepared into liquor; B, a certain amount of liquor is absorbed to be placed into a glass
bottle to be rolled evenly, susceptibility determination of liquor is performed after the
acetone is evaporated fully, comparison medicament is processed by acetone, and comparison is repeated for 3 to 4 times; C, third
instar nymphs of
brown planthopper are placed into the prepared glass bottles with
medicine films, death rate is checked after 90 min, and the
brown planthopper which can not move is determined to be dead; D, the death rate of a
matched group is smaller than 5%, which proves that an experiment is effective; E, the sensibility of brown
planthopper to medicament is judged as per the adjusted mortality ratio after 90 min of the brown
planthopper in the glass bottles with
medicine films, in other words, if the adjusted mortality ratio is larger than 90%, which shows that the brown
planthopper is sensitive to the medicament. The method is simple, easy to implement, and convenient to operate, solves the problems of complex operations and large
workload of an impregnation method and a
drop method of rice stem, and can finish detection in field quickly.