徐州煤田土地复垦对农田养分分布的影响

This research was carried out to evaluate the effect of the reclamation procedure with respect to soil fertility and nutrient distribution pattern in the reprecipitated reclaimed soil. Although there was an obvious indication of low levels of essential nutrients in the reclaimed farm lands (organic matter = 0.32 g kg^-1, total N = 380.8 m g kg^-1, available P = 4.7 m g kg^-1 ), compared to the undisturbed farm lands (organic matter = 2.5 g kg^-1, total N= 1 220 g kg^-1, available P = 20.8 mg kg^-1), the uneven pattern of nutrient distribution was also shown to have been the major limitation to successful reclamation. Further improvement can be achieved through the integration of intensive eco-farming systems using proper fertilizer field correction (PF-FC) and organic manure for successful reestablishment and management of newly reclaimed farm lands overlying the Xuzhou coal mine subsidence.

Effect of land reclamation on nutrient distribution in reclaimed farmlands overlying Xuzhou underground coal mines

The effect of reclamation was evaluated with respect to soil fertility and nutrient distribution pattern in reprecipitated reclaimed soil (Anthroturbic Entisols) in Jiangsu Province, China. Although there were low levels of nutrients in the reclaimed farmlands (organic matter=0.32 g/kg, total N=380.8 mg/kg, available P=4.7 mg/kg), compared to the undisturbed farmlands (organic matter=2.5 g/kg, total N=1220 g/kg, available P=20.8 mg/kg), the uneven pattern of nutrient distribution was also shown to have been the major limitation to successful reclamation. Further improvement can be achieved through the integration of intensive eco-farming systems using proper fertilizer field correction and manure for successful reestablishment and management of newly reclaimed farmlands overlying the Xuzhou coal mine subsidence.