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兴山县于1968年春季从重庆北碚中国农科院柑桔研究所引进少量脐橙(华脐、罗脐、汤脐)接穗,进行高接换种试种。经过十多年的栽培观察,证明在兴山香溪河两岸海拔500米以下的地方,无论气候条件或土壤条件都适于栽培脐橙,并能获得丰产优质。据调查,高接6—8年生的脐橙最高株产达到120斤。果实橙红光滑,皮薄心小,香味浓,肉质脆嫩,汁多化渣,品质好,一般含可溶性固形物12—15％,含柠檬酸0.6—0.8％,很受群众喜爱。目前全县已发展到1.5万株,合计有150亩。
In the spring of 1968, Xingshan County imported a small amount of scion of navel orange (Hua na, Luo na, soup umbilical) from the Citrus Research Institute of BeiLong Chinese Academy of Agricultural Sciences in Chongqing in the spring of 1968 for high alternate seeded test. After more than ten years of cultivation observation, it has been proved that the planting of navel orange is suitable regardless of the climatic conditions or soil conditions and the high yield and quality can be obtained where the two sides of Xiangxi River in Xingshan are 500 meters above sea level. According to the survey, the highest yield of 6-8-year-old navel oranges reached 120 pounds. The fruit is orange-red and smooth, thin and thin, fragrant, succulent and juicy, with good quality. It generally contains 12-15% of soluble solids and 0.6-0.8% of citric acid, which is very popular among the masses. At present, the county has grown to 15,000, with a total of 150 acres.