'Suili No.3'is a high-quality plum edible variety selected and bred by the Berry Research Institute of the Heilongjiang Academy of Agricultural Sciences,which has the characteristics of large fruit size,sweet and sour taste,high yield,excellent quality,strong adaptability,and cold resistance,etc..On the basis of a brief introduction to the efficient cultivation technology of plum in Harbin area,the cultivation technology of plum tree was elaborated,the fruit set rate,fruit yield and other related traits was analyzed,and put forward the efficient and high-yield cultivation technology of'Suili No.3'in H arbin with water and fertilizer integration.Intended to promote the scale,standardization and industrialization of the plum industry,and to provide reference for promote the quality and efficiency of the plum industry and achieve sustainable development.