Effect of Different Fertilization Ways on K Content of Vegetable Planted Soils in Greenhouse

The effects of different fertilization on K content of vegetable soil greenhouse were investigated through the cooperation of field experiment and the chemical analysis.The results showed that the amount of total potassium obviously changed under different fertilization in greenhouse soil.Long-term application of potassium increased the amount of total potassium in the soil,while the application of organic fertilizer had little effect.The application of organic matter significantly increased the amount of slowly available potassium and readily available potassium.The amount of readily available potassium was the highest in the BNPK treatment.