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一、甜橙生产概况 瓯海地处浙江南部,东海之滨,气候温和,据1961～1980年的二十年气象资料分析,年平均气温17.9℃,≥10℃年积温5641.1℃,一月平均气温7.6℃,绝对最低温-4.5℃,平均年降雨量1610.5毫米。根据我国柑桔生态区域的气温指标要求,甜橙年平均温度16～18℃,≥10℃年积温5000～5500℃,极端最低气温>-5℃,一月平均气温5～7℃,极端最低气温历年平均-3～-1℃,我县气象要素和甜橙大面积试种以来的生长结果证明,我县是栽培甜橙的适宜区。 瓯海县现有甜橙面积1763亩,其中1982年前栽植的投产面积为869.8亩,1986年春和1987年春新发展的面积为791亩,1987年估产330吨,成片基地的主栽品种是雪柑,梧埏桔区少量引种试栽的品种为“路比血橙”和冰糖橙。瓯海永强区沿海各乡,待开发海涂
First, the orange production profile Ouhai is located in southern Zhejiang, the coast of the East China Sea, mild climate, according to 1961-1980 twenty years of meteorological data analysis, the annual average temperature of 17.9 ℃, ≥ 10 ℃ accumulated 5641.1 ℃, the average January The temperature of 7.6 ℃, the absolute minimum temperature of -4.5 ℃, the average annual rainfall of 1610.5 mm. According to the requirements of the temperature index of the citrus ecological region in China, the annual average temperature of sweet orange is 16-18 ℃, the accumulated temperature of ≥10 ℃ is 5000-5500 ℃, the extreme minimum temperature is -5 ℃, the average temperature of January is 5-7 ℃, the extreme minimum The average annual temperature of -3 ~ -1 ℃, meteorological factors and large areas of orange cultivation since the test results prove that my county is the appropriate area for cultivating sweet orange. The existing area of sweet orange in Ouhai County is 1,763 mu, of which 869.8 mu is put into operation before 1982, 791 mu is newly developed in the spring of 1986 and 1987, and the annual output is estimated to be 330 tons in 1987. The cultivated base of the base is Semen citrus, a small amount of cultivated Citrus Orange Region planted varieties for the “road than blood orange” and rock candy orange. Ouhai Yongqiang coastal townships to be developed tidal flat