Path Analysis between Soil Urease Activities and Nutrient Factor in Greenhouse Cultivation

In order to study the relationship of the soil urease activity and nutrient in the greenhouse cultivation condition,the relationships between soil urease activity and soil nutrient contents of greenhouse were studied through path analysis.The results showed that multiple regression equation explained 93.5% of urease activities of variance.The err path coefficient was 0.255.Organic and available nitrogen in greenhouse had a direct effect on soil urease activity,they are the main factors of the impact of urease activity.Total N,rapidly available P and K had effects on urease activity through indirect effects of the organic and available nitrogen.