Effects of Phosphate Fertilizer Reduction on Yield,Quality and Economic Benefits of Prunus humilis
In order to study the effects of different phosphate fertilizer rates on the yield and quality of Prunus humilis,this experiment set up different dosage of phosphate fertilizers,including conventional fertilization(CK),phosphorus reduction by 1/3,phosphorus reduction by 2/3 and no phosphorus application.The results showed that the phosphorus reduction by 1/3 treatment had the highest yield of P.humilis,reaching 14 753.17 kg/hm2,which was 3.55％higher than CK.The effectiveness and VC content of single plant of P.humilis decreased with the decrease of phosphorus fertilizer application amount,whereas tannins decreased first and then increased;and anthocyanins,total phenols,and flavonoids all present similar patterns.Agronomic efficiency and partial productivity of phosphate fertilizer application were improved by reducing phosphorus application.When phosphorus application was reduced by 1/3,the profit was the highest,reached 32 277.34 yuan/hm2,and the profit rate was as high as 36.46％.Therefore,the recommended dosage of phosphate fertilizer(P2O5)was 150 kg/hm2 under optimal yield and quality.
万方数据
维普
