Weed prevention and control method used in organic rice planting process

The invention discloses a weed prevention and control method used in the organic rice planting process. The weed prevention and control method used in the organic rice planting process is low in cost, good in effect, truly free of toxin and damage and practical. The method is characterized that a rice seedling bed is irrigated 7-10 days after rice seedlings are transplanted, deep water weed control is achieved, the weed control water level is kept to be 55-65% of the height of the rice seedlings, and the water level is kept continuously for 8-10 days and nights; during the time from transplanting of the rice seedlings to water treatment, the water level is kept in the field, soil can not be exposed, and growth of weeds and weed seeds is inhibited or the weeds and the weed seeds are dead under the condition that oxygen and sunlight irradiation lack. The method is low in implementation cost, good in weed prevention and control effect and very beneficial to later growth of rice. The method solves the problems wh