Rice seedling stage brown planthopper resistance large-scale authenticating and screening method

The invention relates to the technical field of plant disease and insect pest prevention and treatment and rice breeding, in particular to a rice seedling stage brown planthopper resistance large-scale authenticating and screening method. The method includes the steps of dividing a sowing field into a plurality of areas, sowing a to-be-tested rice material in an adjacent area corresponding to a sensing insect contrast, evenly mixing brown planthoppers at all insect ages obtained through purifying, detoxifying and large-scale propagation, artificially inoculating the insects into the to-be-tested rice material and the sensing insect contrast, and evaluating the brown planthopper resistance of the to-be-tested rice material in reference to the sensing insect contrast corresponding to the to-be-tested rice material. Compared with an existing SSST method, the method simplifies the operation process, improves the authenticating efficiency, has high authenticating accuracy and stability, ismore suitable for large-s