Optimization of Controlled Water and Nitrogen Fertigation on Greenhouse Culture of Capsicum annuum

Table 1

Physical and chemical properties of the experimental field soil.

Soil depth; (cm)	Soil bulk density; (g⋅cm^−3)	Field capacity; (%)	Wilting point; (%)	Saturated moisture; (%)	pH value	Organic matter; content; (%)	Total N content; (%)	Total P content; (%)	Total K content; (%)
0–20	1.46	24.4	15.2	45.3	8.03	14.5	0.08	0.06	0.17
20–40	1.57	23.8	18.2	42.0	8.15	15.7	0.08	0.05	0.14
40–60	1.48	24.7	17.6	49.0	8.20	14.3	0.06	0.04	0.14
60–80	1.45	25.2	16.0	35.2	8.20	14.0	0.05	0.02	0.12