美国栽培柑桔有四百多年的历史,而大面积栽培只是最近十几年。1976年柑桔总面积795.7万亩,其中结果面积724.5万亩。1975年每亩平均产量为四千零七十五斤,全国柑桔总产量为一千四百七十七万吨,比1960年增长了七百八十五万吨。总产约占世界总产的三分之一。美国柑桔生产发展,主要有以下几个特 Citrus cultivation in the United States has a history of more than four hundred years, while the cultivation of large-scale cultivation is only the last ten years. In 1976, the total area of ​​citrus was 7,957,000 mu, of which the result area was 7,245,000 mu. In 1975, the average output per mu was 4,075 catties, with a total citrus output of 14,770,000 tons, an increase of 7,850,000 tons over 1960. Total output accounts for about one third of the world’s total output. The United States citrus production development, mainly in the following special