Effects of fertilization application of waste branches on orchard soil and fruit tree development and fruit quality
[Objective]To investigate the feasibility of returning waste branches to the field in north-west China.[Method]Commercial organic fertilizer was used as the control(CK),and branches and leaves were crushed and applied directly(RF)and after fermentation(FB)as the return treatments in 2020～2021 in TianshuiHuaniu apple orchard in Gansu Province,and the new tips,new leaves,soil properties and fruit quality of apple trees were measured.The effects of different treatments on apple tree development,fruit quality,and orchard soil properties were analyzed.[Result]Compared with CK,the diameter and chloro-phyll content of the new annual leaves of FB increased by 5.92%and 2.35%,and the nitrogen and potas-sium contents of the leaves increased by 2.85%and 7.62%,respectively.After fruit harvest,soil organic matter and alkaline digested nitrogen increased by 11.9%and 4.52%,respectively,and soil bacterial popu-lation increased by 2.12%in FB compared to CK,while RF soil fast-acting phosphorus increased by 5.32%compared to the control.Procipal component analysis showed that the overall fruit quality index of each treatment was ranked from high to low as CK>FB>RF,but there was no significant difference be-tween FB and CK.[Conclusion]After fermentation,apple shoots maintained the tree growth,fruit quality and soil physicochemical properties comparable to conventional organic fertilizer application,which can be applied to the clean production of apple orchards in this area.
NETL
NSTL
万方数据
维普
