Sweet cherries are currently the most economically efficient tree species in deciduous fruit trees in northern China. However, due to improper allocation of pollination trees, chilling, and blooming frosts, cherry yields often rise and fall, 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 fruit varieties, frost-resistance, high-yield, and good self-cultivation varieties of sweet cherry, and to research and formulate integrated cultivation techniques.
Yantai City Academy of Agricultural Sciences 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, the Yantai Academy of Agricultural Sciences created a yield of 1447 kilograms per year for 6-year old trees, 3115 kilograms per year for 12-year old trees, and 30,000 to 50,000 yuan per mu for open field cultivation. More than 36,000 mu have been promoted, and the selected fine varieties have become important new development varieties not only in Yantai, Tai'an, Laiwu, Zaozhuang, and Weifang, but also expanded to Shaanxi, Dalian, Beijing, Sichuan, Qinghai, and Xinjiang. It has become the main pusher in the lower areas of cherry yield.
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