IRRIGATION AND FERTILIZATION COUPLING EFFECTS ON PROPERTIES OF PADDY SOIL AFTER PLANTING GREEN VEGETABLES IN GREENHOUSE

Irrigation and fertilization obviously affected green vegetables growth. Six irrigation system and fertilization coupling treatments were set to investigate their interacted effects on soil properties of greenhouse green vegetable. They were ACC (urea fertilizer+ superphosphate fertilizer+ potassium sulphate fertilizer +normal irrigation) as a check, OC (bio-organic fertilizer + normal irrigation), OS (bioorganic fertilizer + water-saving irrigation), CFC (NPK compound fertilizer + normal irrigation), CFS (NPK compound fertilizer + water-saving irrigation), OCFC (bio-organic fertilizer + NPK compound fertilizer + normal irrigation), and OCFS (bio-organic fertilizer + NPK compound fertilizer + water-saving irrigation). Results showed significant differences presented in soil water (SW), pH, EC, organic matters (SOM), available nitrogen (AN), available phosphorus (AP), available potassium (AK) and total nitrogen (TN) among all treatments (P