For many years, the development of new high-end and high-quality carrot varieties has been one of the important directions of Shandong species. After many years of experimental planting, Shandong species have selected red jade rabbit, racing rabbit, red Yue, Tong Delai and other outstanding carrot varieties. Among them ," Tong Delai "carrot after two years in Shandong autumn, Hebei Bashang and other regional trials outstanding performance, by dealers and buyers recognized.

 Spring 2020, Cold, hail and other extreme weather, In such years, "Tong Delai" outstanding performance. Spring sowing 140 days harvest, About 70CM tall, Medium seedlings, Strong growth, Strong resistance, No bolting occurred in the field; Spring sowing Tong Delai root cylindrical, The epidermis and interior are orange red, Root length 20~22CM, Same root pattern, After washing, the color is bright, Good commodity; 29 May 2020, Field weighing, The yield was 4.7% higher than that of the control.

 According to the experts ," Tong Delai "carrot can be seeded and cultivated in spring and autumn, and it has great potential to increase production.