section n-n n-n

N fertilizer utilization rate

N utilization ratio

N-fertilizer utilization rate

chemical fertilizer utilization ratio

fertilizer utilization ratio

(Br2BN3)(n) n=1~4

(CaN6)n (n=1～5) clusters

(Cl2BN3)n（n=1-4）

(HCaN3)n(n=1～5) clusters

(Me2BN3)n（n=1～3） clusters

(Mg3N2)n(n=1～4) clusters

(MgB2)(n) n=1~3 clusters

(MgN6)n (n=1～5) clusters

(N，N DIETHYL)AMINO ACETANILIDE

[Ca(NH2)2]n(n=1～5) clusters

~(15)N fertilizer

~(15)N utilization

~(15)N-fertilizer