精准施肥 Remote Sensing 3110367.0.400 600.395-0400 900.4040.416 3130.419-0.428 320.440.49 1200.41-0.420 1500.41l0.418311 0.367~0.400 313 0.419~0.428 312 0.444~0.449 60 0.395~0.400 90 0.404~0.416 120 0.411~0.420 150 0.411~0.418 Remote Sensing 精准施肥