Sweet cherries are the most economical species in the deciduous fruit trees of northern China. However, due to improper allocation of pollinating trees, late spring and flowering frost, cherry yield often rises and falls, which limits the further development of sweet cherries. Self-cultivation varieties can produce high yields and stabilize production. However, the current production and cultivation of self-cultivation varieties Rabins and Stella fruits are small and affect farmers' income. It is an urgent problem to be solved for the healthy development of the cherry industry to screen a good variety of sweet cherry with large fruit shape, frost-resistance, high yield, good adaptability and self-cultivation. Yantai City Academy of Agricultural Sciences in Shandong Province has selected three self-cultivated varieties: Sunyang, Santina, and Stark Yanhong. The sun is bright red, and the fruit is very large. The average fruit weight is 11.23 grams and the maximum is 22.8 grams, ranking the highest in the country; Santi Tina is purple and black, which fills the gap of domestic black varieties; Stark red fruit is red, bright, very Beautiful. All three varieties have strong frost resistance, high yield, and good adaptability. The institute creatively carried out the research and demonstration of key production technologies such as “deep planting and shallow buryingâ€, “high ridge ridgingâ€, “controlling bud shapingâ€, “branch rough control cuttingâ€, “protection promoting fertilizerâ€, and other integrated support. Cultivation techniques are novel, simple and easy to implement. In the process of demonstration and promotion, they created a yield of 1447 kilograms per year for 6-year old trees, 3115 kilograms per year for 12-year old trees, and 50,000 yuan per mu for open cultivation. More than 36,000 mu have been promoted, and the economic benefits have been 540 million yuan. The selected fine varieties have become important new development varieties not only in Yantai, Tai'an, Laiwu, Zaozhuang, Weifang and other places, but also expanded to Shaanxi, Dalian, Beijing and Sichuan. Qinghai, Xinjiang, and other places have become the main push varieties for lower yield areas of cherry. Fire Alarm Series,Fire Detector,Wifi Smoke Detector,Photoelectric Smoke Alarm Guangdong Isafenest Co.,Ltd. , https://www.isfenest.com