The research on pesticide compound preparation is of great significance for prolonging the service life of new pesticide varieties, alleviating the resistance of target organisms, expanding the spectrum of prevention, reducing the cost of prevention, improving drug efficacy and environmental safety. In order to screen the pesticide synergistic compound formula for controlling the whitebacked planthopper, the researchers of the Institute of Entomology of Guizhou University and the Institute of Plant Protection of Guizhou Province used the rice stem impregnation method to measure 8 pesticide single agents and compounding agents against white back. The virulence of the 3rd instar nymph. The co-toxicity factors were used to screen out the ratio of 16 groups of co-toxic factors greater than 20, and 15 groups were further quantitatively screened by co-toxicity coefficient method, and 5 groups with synergistic effect were obtained, respectively, which were nitenpyram. The ratio of 1:10 to chlorpyrifos and the ratio of imidacloprid to isoprocarb were 7:40, 7:200, 7:400 and 7:1000, respectively; the co-toxicity coefficients were 112.5, 242.1, 212.4, 638.1, 417.7, respectively. Among them, imidacloprid and isoprocarb have the most significant synergistic effect in the ratio of 7:400. More pesticide knowledge , please pay attention to China Pesticide Network Medical Gloves are disposable gloves used
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Use of imidacloprid and isoprocarb in the control of whitebacked planthopper