2-Pyridinium-s-triazine salts of the formula ##STR1## wherein R.sub.1 represents unsubstituted or substituted alkyl of from 1 to 12 carbon atoms, alkenyl or haloalkenyl, R.sub.2 and R.sub.3 independently represent hydrogen, lower alkyl or haloalkyl and X.sup..crclbar. is the anion of an inorganic or organic acid. These salts are growth regulating agents especially for defoliation and desiccation of crop plants in order to facilitate harvesting. They may also be used as post-emergent herbicides.
化学式为##STR1##的2-
吡啶基-s-三嗪盐,其中R.sub.1代表未取代或取代的1至12个碳原子的烷基,烯基或卤代烯基,R.sub.2和R.sub.3独立地代表氢,低烷基或卤代烷基,X.sup..crclbar.是无机或有机酸的阴离子。这些盐是生长调节剂,特别用于作物植物的落叶和干燥,以便于收获。它们也可以用作后发生
除草剂。