Effects of Combined Application of Organic Fertilizer and Chemical Fertilizer on the Yield,Quality and Economic Benefit of the'Baifeng'Peach Cultivar in Lanzhou Area
In order to investigate the effects of the combined application of organic fertilizer and chemical fertilizer on the soil properties and the growth of'Baifeng'peach trees,so as to construct a good ecological system for peach orchard soil,experiments were set up to replace chemical fertilizers with different proportions of organic fertilizers(25%,50%,75%,100%).A chemical fertilizer treatment(N 450 kg/ha,P2O5 300 kg/ha,K2O 450 kg/ha)was used as a control to study the effects of partial replacement of chemical fertilizer by organic fertilizer on soil nutrient content,yield,and quality of'Baifeng'peaches.The results showed that compared with conventional fertilization,organic fertilizer combined with chemical fertilizer could increase soil organic matter content,yield and income return in peach production.The optimal results were observed with 50%and 75%organic fertilizer replacement treatments,compared with conventional fertilization,the average fruit weight increased by 11.33 g and 8.22 g,fruit hardness increased by 0.67 kg/cm2 and 0.61 kg/cm2,the rate of high-quality fruits increased by 11.0 and 12.2 percentage points,soluble solids content increased by 31 g/kg and 36 g/kg,soil organic matter content in the peach orchard increased by 4.39 g/kg and 5.34 g/kg,yield increased by 3 642.8 kg/ha and 3 612.0 kg/ha,and planting income increased by 63 879.4 Yuan/ha and 53 211.0 Yuan/ha,respectively.It is suggested that the 50%and 75%organic fertilizer replacement treatments to be promoted to maximize the economic benefits of'Baifeng'peach cultivation while effectively maintaining soil health.
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