Research Article

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

Figure 7

Effects of different irrigation and fertilizer treatments on tomato yield in the 2012 and 2013 seasons. Columns with the same letter represent values that are significant at the 5% probability level. Each value is the mean ± SD ().