3 - (difluoromethane) - 1-methyl-n - (3 ', 4', 5 'trifluoromethane (1,1' - difluoro) - 2-il) - h-pirazol-4-carboxamida crystal form B; preparation procedure for crystal form; plant preparation containing such substance and method for inhibiting useless plant growth.

摘要

3 - (difluoromethane) - 1-methyl-n - (3 ', 4', 5 'trifluoromethane (1,1' - difluoro) - 2-il) - h-pirazol-4-carboxamida crystal form B; preparation procedure for crystal form; and use in plants.