Many problems have been brought in the main apple planting areas of loess plateau because of perennial extensive management,such as the replantation diseases caused by the soil degradation,and the decrease of the quality of apple by the excessive pesticide,which are seriously threatened the sustainable and steady development of the apple industry.In this study,a microbial compound fertilizer was developed on the basis of the screening of microbial strains of PGPR from the apple tree and the soil fundamental...
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