  We revealed novel phase deagram of Fe-pnictide high-Tc superconductor
LaFe(As_{1-x}P_{x})O in wide doping level (0.3<x<1) by P-NMR. Systematic
31P-NMR studies revealed the emergence of the antiferromagnetic ordered phase
(AFM-2) in 0.4 < x < 0.7 that intervenes between two superconductivity
(SC-1/SC-2) phases. The 31P-NMR Knight shift points to the appearance of the
sharp density of states at the Fermi level that is derived from d_{3Z^2?r^2}
orbit, which is less relevant with the onset of the SC-2. On the other hand, we
remark that the AFM spin fluctuations arising from the interband nesting on the
d_{XZ}/d_{YZ} orbits must be a key ingredient for the occurrence of SC around
AFM-2.
