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

Table 3

The fertilizer N recovery efficiency and use efficiency were after harvest in two consecutive years.

Treatment	2012				2013
	Effective residual N (kg hm^−2)	N absorption contents (kg hm^−2)	N recovery efficiency (%)	N use efficiency (%)	Effective residual N (kg hm^−2)	N absorption contents (kg hm^−2)	N recovery efficiency (%)	N use efficiency (%)
W1F1	82.38	161.83	27.35%	50.25	91.21	163.41	31.68%	50.07
W1F2	64.45	147.02	18.27%	58.77	71.65	144.50	20.87%	56.25
W1F3	66.09	117.41	4.10%	63.48	70.41	110.76	2.16%	56.26
W2F1	110.25	136.06	28.22%	39.51	120.88	141.15	34.77%	40.79
W2F2	93.03	127.30	23.19%	47.82	86.98	126.82	19.57%	46.43
W2F3	86.70	95.44	2.97%	45.18	85.25	95.36	1.70%	43.43
W3F1	150.13	121.08	38.60%	33.27	152.47	103.56	32.27%	25.13
W3F2	144.45	107.82	40.94%	36.99	138.60	97.34	31.87%	30.05
W3F3	103.32	85.62	8.63%	36.99	97.04	83.52	1.65%	33.56
Control		41.23				43.25
Initial N content	137.35				143.58