| 摘要 |
<p>Compositions containing phosphonic acid derivatives (I) their acid chlorides, anhydrides, hydrolysable mono- and diesters, and salts. R = vinyl-, allyl-, haloethyl-, halopropyl-, methoxyethyl-, carboxymethyl-, phosphonoethyl- pref. cmpds. of general formula (III) X = hal- or -PO(Y)Z Y = Cl- or -OR4 R4 = H-, Na+, Al+, Zn+ or opt. substd. aryl-, arylmethylene-, heterocyclyl-, heterocycly- methylene- or XCH2CH2PO(Z)- Z = Y or opt. substd. opt. unsatd. H/C (e.g. lower alkyl- or C = 18 cycloakyl-) or R4 + Z together may be -O-phi, -OCH2-phi-, -COO-phi-, -CONH phi phi = divalent opt. substd. benzene or heterocyclic ring Plant growth regulants e.g. increase in yield, auxine action, inhibition of growth at extremities and promotion of branching, increase in protein content, falling off of leaves, flowers and fruit, accelerated ripening of fruit, promotion of formation of flowers and fruit, inhibition of flower and seed formation; strengthening of stems; stimulation of seed germination; resistance to frost; hormone- and epinasty effects, etc.</p> |
