Research Progress in the Research on Biology, Ecology and Integrated Prevention and Control Techniques of Rice Water Weevil in China

【Objective】 The latest developments in the biology, ecology and comprehensive prevention and control technology of rice water weevil at home and abroad were summarized to provide an important reference for the monitoring, prevention and continuous research of rice water weevil in China. 【Method】 Related document document literature in domestic and foreign official website were collected, and these literature were analyzed contrastively. 【Result】 The rice-water weevil originated in the Mississippi River Valley. They occurred and established populations in rice-growing areas in South America, Asia, and Europe. This pest was discovered in Tanghai County of Hebei Province of China in 1988.At present, they were distributed in 403 counties (cities or regions) in 23 provinces (autonomous regions and municipalities directly under the Central Government). The main spreading and diffusion way of rice-water weevil in China were sporadic diffusion and rapid diffusion, including rice seedlings, meteorological wind, migration, crawling / flying movement, drifting with wind / water. Rice water weevil has complicated genetic structure and high heterogeneity in China, with higher differences. in population genetic. It moved mainly using three activities such as crawling, swimming and flying, and its migration and diffusion depend on airflow and water flow. The effects of constantly changing light intensity, humidity, temperature and airflow on the migration of rice water weevil are interactive and superimposed. The suitability of rice water weevil in China was generally N16.53-26.73 °, E97.85-116.75 °. 【Conclusion】 Rice water weevil has occurred and established populations in rice planting areas all around the world. The colonization and expansion of rice water weevil are related to different ecological environments. There was good result in prevention and control of rice water weevil using bioinformatics and other technologies. There are already had a emergency blockaded and integrated control technique in our country.