Research Article

Effects of Irrigation and Nitrogen Fertilizer Input Levels on Soil -N Content and Vertical Distribution in Greenhouse Tomato (Lycopersicum esculentum Mill.)

Figure 4

The effects of different irrigation and fertilization on vertical distribution of soil -N content in root zone soil of different treatment at 43 days after transplanting in 2012. W1: 100%, W2: 75%, and W3: 50%; F1: N240–P2O5120–K2O150 kg hm−2; F2: N180–P2O590–K2O112.5 kg hm−2; and F3: N120–P2O560–K2O75 kg hm−2.
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