| 摘要 |
<p>2,4-bis-pyridylium-s-triazines of the formula WHEREIN R1 represents hydrogen, lower alkyl, lower haloalkyl, NH2, OH, phenyl, 4-pyridyl, N'-methyl-4'-pyridylium, R2 and R3 each independently represents alkyl, alkenyl, an alkyl radical substituted by halogen, alkoxy, alkylthio, cyano, alkoxycarbonyl, and X represents the anion of an inorganic or organic acid or the anion I-3, represents growth regulating agents which produce increases in yield or quality in the crop products of the useful plants or which facilitate harvesting. They may also be used as herbicides.</p> |
