Combined application of N and K

Effect of N and K on yield

Combined N and K and Zn fertilizers

section n-n n-n

section k-k k-k

balance between K + and N a +

balance of K fertilizer

balance of N

Balance of N fertilizer

check and balance of powers

disequilibrium of balance of payment

dynamic and balance of salt

gambling and balance of labor benefit

inflow and outflow of balance of payments

loss of balance of psychology

N Balance and cycling

protection based on the principle of balance of energy

reduction of balance of cost method

“K-of-N” system