How to make green vegetables more green? The key to using or not using pesticides is the key. Recently, good news was received from Tianjin Agricultural University Technology Demonstration Park. After three years of unremitting efforts, researchers successfully introduced biological predators that are environmentally friendly and harmless to the main pests of vegetables and effectively controlled greenhouses. Occurrence of insect pests such as locusts, whitefly, and infestation of vegetables in facilities. The removal rate of greenhouse vegetable pests reached 85%, and the use of pesticides was greatly reduced by ensuring the quality of vegetables. In order to solve the problem of industrial production of major natural enemies, the Institute of Plant Protection of the Municipal Academy of Agricultural Sciences is currently conducting independent research and development of natural enemies, and has developed a variety of biological natural enemy eggs, including the reed bees, which are currently undergoing finalization. test. This year, the Plant Protection Institute will work with the park to systematically and standardize the release technology, comprehensive prevention and control technologies, as well as the factory-based breeding and breeding technology for biological natural enemies in the facility greenhouses. It will also develop small-scale collection devices and facilitate storage and transportation. The release of packaging containers has enabled the commercialization and large-scale production of biological enemies to ensure that the city's 500,000 mu of protected vegetables are of higher quality.