[Control efficacy of Trichogramma japonicum against Chilo suppressalis and Chilaraea auricilia].

In order to understand the relationships of the population increase capacities between egg parasitoid Trichogramma japonicum Ashmead (Hymenoptera: Trichogrammatidae) and two rice borers Chilo suppressalis Walker and Chilaraea auricilia Dudgeon (Lepidoptera: Pyralidae), and to evaluate the control efficacy of T. japonicum against C. suppressalis and C.

[Comprehensive assessment on management measures of rice insect pests].

Based on the investigation of arthropods biodiversity and insect pests controlling effect in the paddy fields of demonstration area of organic rice production in Guangzhou, a comprehensive assessment on the economic, social, and ecological profits and costs of organic rice production in study area was conducted by using analytic hierarchy process (AHP). The results indicated that among all insect pests controlling measures, organic rice planting had the best comprehensive benefits, with a weight value of 0.5355.