6 △SOM 1.56E+13 Total N 3 3 3 3 3 1.56E+13 7 P fertilizer 2 2 2 2 2 7.35E+12 39 24 8 N fertilizer 3.42E+13 9 Herbicides 2 2 5.05E+12 11 11 11 11 11 11 11 11 Diesel 2.11E+12 Machinery 1.20E+13
6 △SOM 1.56E+13 Total N 1.56E+13 7 P fertilizer 7.35E+12 8 N fertilizer 3.42E+13 9 Herbicides 5.05E+12 Diesel 2.11E+12 11 Machinery 1.20E+13 2 11 2 11 2 11 2 11 2 11 2 11 2 11 3 3 3 3 3 24 39