摘要：There are increasingly serious ecological environmental pollution problems caused by the increased use offertilizers in the process of agricultural production, therefore the rational application of fertilizers is a majorway to prevent and control the pollution caused by fertilizers, so as to maximize the utilization efficiency andreduce the runoff and volatilization of fertilizers. The experiment was conducted in the greenhouse (LiaoShenI type) with different water and fertilizer couplings to establish yield models of tomatoes, monitor the index ofsoil environment and nutrients during the growth of tomatoes, and finally to search for optimal managementmodes of water and fertilizer. The results show that the optimum amount of nitrogen, phosphate and kaliumfertilizer are 565kg/hm 2 , 375kg/hm 2 and 150kg/hm 2 respectively, with the irrigation quota of 200mm and theyield of tomato being 50000kg/hm 2 . The experimental coupling of water and fertilizer will provide a scientificguidance for the cultivation of greenhouse tomatoes with high yield, high efficiency and less pollution inLiaoning province.
