| Popis: |
To reduce the soil fixing of phosphorus fertilizer, improve the nutrition efficiency, and increase crop yield, the potted pakchoi experiment was conducted to study the effects of fertilizer on the yield and quality of pakchoi, soil nutrients and fertilizer use efficiency. In this study, we set up a control, a conventional fertilizer treatment and seven novel phosphorus fertilizers that combined with humic acid, zeolite powder, diatomite activator in different proportions. The results showed that, several optimized phosphorus treatments significantly increased the yield of pakchoi with increase rate from 0.44% to 12.82%; Compared with nitrogen, phosphorus and potassium regular fertilization, the superfine phosphorus and potassium-humic acid-diatomite-zeolite activation treatment increased the content of Vc by 5.37% of pakchoi and reduced the nitrate content and soluble sugar content by 18.23%, 53.13% respectively; The content of available phosphorus in soil increased by 17.20%~24.87%, and the utilization rate of phosphate fertilizer increased from 11.70%(nitrogen, phosphorus and potassium regular fertilization) to 20.17%(superfine phosphorus and potassium-humic acid-zeolite activation treatment). Thus, under the conditions of this experiment, it is recommended to select the superfine phosphorus potassium-humic acid-zeolite-activated fertilizer in fertilizer production and application. |
