Abstract: The control effect of six herbicides and different combinations on peanut weeds and the safety of peanut were clarified by field plot test method was used. The results showed that there were significant differences in weed control effect among different chemicals, showing strong selectivity. The control effect of fresh weight for 40 days was investigated. 108 g/L high-efficiency fluoropyrimidine EC had the highest control effect on grasses weeds, up to 96.3%, but its control effect on broad-leaved weeds was lower than that of other herbicides. 10% ethyl carboxyfluoroether EC had 100% control effect on broad-leaved weeds, but the lower control effect on gramineous weeds, which was 16.9%. The control effect of 480 g/L methicillin pine AS on broad-leaved weeds was 93.8%, but only 6.9% for gramineous weeds. Among the combinations, 240 g/L imidazole niacin AS and 5% quinofolin EC or 250 g/L fluorosulfamethoxazole AS had higher control effects on gramineae and broad-leaved weeds, and 240 g/L imidazole niacin AS and 5% quinofop EC were better separately applied than mixed application. Peanut leaves were slightly chlorotic and crinkle, after application of pesticides, and could return to normal growth after 10~20 days.

Key words: peanut, herbicide, control effect, security