Abstract:

In order to explored the response mechanism of controlled release fertilizer on apple root domain environment, which provided a theoretical basis for the application of controlled release fertilizer in fruit, the effect of controlled release fertilizer on full fruit period fruit orchard soil was studied, including orchard soil organic matter, pH and mineral elements contents such as N, P, K, Ca, Mg, Cu, Fe, Zn and Mn by the application of apple special controlled release fertilizer and common compound fertilizer with different CRFs content treatment. The results showed that, pH value and organic matter content were reduced by application of fertilizer, and the pH value of applying CRFs was higher that that of applying common compound fertilizer. The application of CRFs increased significantly contents of soil available nitrogen, Fe and Zn, but reduced contents of available phosphorus, potassium, exchangeable Ca, Mg, Mn and Cu. The application of CRFs was increased the utilization of soil N, reduced the loss of fertilizer on soil pollution and effectively improved the environment of the fruit root domain environment.