Effects of Subsurface Drip Irrigation on Water Consumption and Yields of Alfalfa under Different Water and Fertilizer Conditions

Table 2

Designs of the experimental factors and levels for the fertilization of the alfalfa under SDI conditions.

Treatment	Levels and factors for production target
	Irrigation quota (mm)	N (kg·hm^-2)
SF-1	20	0
SF-2	20	60
SF-3	20	120
SF-4	25	0
SF-5	25	60
SF-6	25	120
SF-7	30	0
SF-8	30	60
SF-9	30	120
SF-10	A local herdsman’s traditional alfalfa planting field was taken as the control treatment