Effects of Slow-release Fertilizer and Balance Fertilization on Nitrogen,Phosphorus and Potassium Uptake of Dried Peppers

The field plot experiment was conducted to study the effects of two kinds of slow-release fertilizer and balance-recommended fertilization on dry matter accumulation,output,nitrogen,phosphorus and potassium uptake and fertilizer use efficiency of dried pepper.The results showed that the dry matter accumulation of dried pepper plant and nitrogen,phosphorus,potassium uptake amount of fruit increased significantly under the conditions of various fertilization,compared with no fertilizer.Compared to conventional fertilization,the dried pepper economic output increased significantly and separately by 20.94%,17.5% and 14.54%,the nitrogen uptake amount of dried pepper fruit increased by 21.53%,18.46% and 13.19%,phosphorus uptake amount increased by 14.08%,15.76% and 10.44%,and potassium uptake amount increased by 22.66%,15.73% and 16.28% under the conditions of balance-recommended fertilizer,slow release compound fertilizer and urea refined(slow release nitrogen fertilizer).And the fertilizer nitrogen utilization increased by 5.84%,7.14% and 8.33%,respectively,the fertilizer phosphorus utilization increased by 3.32%,3.27% and 2.47%,respectively.However,the utilization of fertilizer potassium reduced due to the increasing of potassium input,and fertilizer nitrogen,phosphorus utilization was low too,so further study was needed.And the nitrogen application could reduce by 20%-50% under the conditions of balance-recommended fertilization and two kinds of slow-release fertilizer,thereby reducing the risk of environmental pollution.Slow-release fertilizer could also reduce the frequency of application,and greatly reduce the labor costs,so they were in favor of energy saving,the cost-saving and environment protection.