Method for improving parasitic effect of rice planthopper eggs and application of method

The embodiment of the invention discloses a method for improving the parasitic effect of rice planthopper eggs and application, and belongs to the field of biological control of major rice pests. The method comprises the steps of mixed production and mixed release of two kinds of rice planthopper egg parasitic wasps, namely anagrus nilaparvatae and trichogramma planthopper. In the rice field environment in China, the anagrus nilaparvatae is a parasitic wasp dominant species of rice planthopper eggs, and in the practical application process, although a certain effect is achieved when the anagrus nilaparvatae is singly used for preventing and controlling the rice planthopper, a large number of rice planthopper eggs are not parasitized and normally develop into nymphs to drill out and harm rice still exists. By utilizing the characteristics that the anagrus nilaparvatae and the trichogramma planthopper can parasitize the same rice planthopper egg mass, the parasitism peak period in the daytime is different, the