function of water and fertilizer with yields
consumption of water and fertilizer
coordinated effect of water and fertilizer
coordination of water and fertilizer
coupling effect of water and fertilizer
coupling effects of water and fertilizer
coupling of fertilizer and water
coupling of water and fertilizer
effect of fertilizer and water
effect of water and fertilizer
efficiency of water and fertilizer
integral regulation and control of water and fertilizer
Integrated management of water and fertilizer
Integration management of water and fertilizer
interaction of water and fertilizer
Mathematical model of water and fertilizer
Ratio of water and fertilizer
regulation of water and fertilizer
Relation of fertilizer and water