1, the orchard should be pruned reasonably, improve the ventilation and light environment, and pay attention to water supply and drainage. Rational fertilization: in autumn, organic fertilizer and bacterial fertilizer are used as the main base fertilizer, supplemented by compound fertilizer, and 2 kg of mesut is added per mu. Harvitt was used for irrigation in the young fruit period, Harvey fruit was used for irrigation in the fruit expansion period, and high-potassium compound fertilizer was combined with topdressing without nitrogen fertilizer.

2. Spraying foliar fertilizer which is beneficial to the absorption of fruit trees: spraying 5% of plum trees with Dole and 80% of plum trees with whole fruits for two consecutive times with an interval of 7 days. During the fruit expansion period, spray Beverly+Tianbao on the leaves.

3. Spray 2-3 times with "color concentration" during the color change period, with an interval of 7 days. Directly promote plums to swell, sweeten and color.