The dispersed fluorescence yields of excited photodissociation fragments of N2O are obtained by means of the two-dimensional fluorescence spectroscopy as a function of both the excitation energy (E(ex)) in the range 14.28-36.35 eV and the fluorescence wavelength (lambda(fl)) in the range 80-200 nm. Final dissociation products, dissociation limits, and correlation among different neutral dissociation channels are identified. In most cases of the neutral dissociation of superexcited states below 20 eV, neutral dissociation is shown to proceed via multichannel predissociation. The nd pi Rydberg states converging to N2O+(C-2 Sigma(+)) are shown to have the neutral dissociation channel with specific branching ratios for their decay. The neutral dissociation into N-2(a(1) Pi(g)) + O is shown to diminish at the threshold energy for the three-body neutral dissociation, Broad features of enhanced fluorescence above 20 eV are identified as multiply excited neutral states.