Approved No.: Guangdong Review Fruit 2008006
Breeding units: College of Horticulture, South China Agricultural University, Institute of Pomology, Guangdong Academy of Agricultural Sciences, Orange Research Institute, Boluo County, Guangzhou Agricultural Technology Promotion Center
Variety source: Japan (Qingmi/Nakano No. 3) strains
Characteristics: Strong tree vigor, fruit ripening period from mid-December to mid-January (Frost area). The average fruit weight of 347 grams, apparent shape characteristics, tender and tender fruit, soluble solids 12.2%, sugar and acid ratio 12.9:1, strong flavor, good quality, high yield and adaptability. Field performance basically maintained the original variety characteristics and characteristics.
Yield performance: After several trials, the average yield was 7.1 kg for three years, 14.1 kg for four years, and 34.7 kg for five years.
Cultivation techniques: (1) Choose low-slope hilly lands, dry slopes, or paddy fields that are convenient for irrigation and drainage, pay attention to drainage in spring and summer rains, and prevent drought in autumn and winter; (2) strengthen fertilizer and water management. In April-August, long-term organic fertilizer was used as the main fertilizer, accounting for 70% of the annual fertilization amount; winter and spring fertilization was dominated by decomposed farmyard fertilizers and soil miscellaneous fertilizers, and the application amount accounted for 20% of the annual total; (3) appropriate promotion. Flowers, timely protection. For a prosperous tree with a small amount of flowers, the use of circumcision or hormones should be used to promote flowering, and fruit should be protected in time; (4) Attention should be paid to prevention and treatment of huanglong disease, anthrax, gray mold, red spider, rust spider, leaf miner, aphid Diseases and insect pests such as whitefly, whitefly, and scale insects; (5) Timely harvest: It is appropriate to harvest in the mid-January of January when the fruit quality is the best; (6) Do not mix with other varieties to reduce the production of seeds.
The provincial product review meeting approved opinion: Guangdong cited Ighuo orange was imported from Japan. Strong tree vigor, good yield, strong adaptability. The average weight of 347 grams. Soluble solids 12.2%, sugar to acid ratio 12.9:1. The flesh is tender, with a strong flavor and good quality. Mature period from mid-December to mid-January. Suitable for planting in the central and northern regions of our province. Comply with the certification standards for crop varieties in Guangdong Province and pass the examination and approval.
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