Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China

Table 3

Simulated soil water leaching and soil water storage variation under different planting systems.

Planted type	Precipitation + irrigation; (mm)	Soil water leaching; (mm)	Soil water storage; (mm)
Grape orchard	1631.8	971.8	6.5
Vegetable base	1521.8	963.8	−46.4
Conventional farmland	1581.8	1177.6	−17.2
Planted type	Fertilizer usage; (kg·hm^−2)	Leaching loss for NO3-N (kg·hm^−2)	Leaching rate for NO3-N (%)
Grape orchard	695.5	277.1	39.8
Vegetable base	381.4	91.3	23.9
Conventional farmland	178.6	15.2	8.5

Noted: + means that the soil water storage increases; − means that the soil water storage decreases.