四川省眉山县40年代初即有零星脐橙栽培,多年来由于品种(系)不对路,产量不高。1974年在本县郑南桥果园选出脐橙9号单株,经多年观察鉴定,性状稳定,高产优质,抗逆性强。在1985年农牧渔业部优质农产品展评会上。眉山9号脐橙被评为优质水果。目前全县已栽植5000余亩80万株,年产量35万公斤。已建立母本园200亩,繁殖苗木50余万株,并向31个县推广接穗60多万枝。 Meishan County, Sichuan Province in the early 40s that sporadic navel orange cultivation, over the years due to varieties (lines) wrong way, the yield is not high. In 1974 in the county Zhengnanqiao Orchard electoral orange plant No. 9, after years of observation and identification, stable, high yield and high quality, strong resistance. In 1985, Ministry of Agriculture, Animal Husbandry and Fisheries Quality Agricultural Products Exhibition. Meishan No. 9 navel orange was rated as high-quality fruit. At present, the county has planted more than 5,000 acres of 800,000 plants, annual output of 350,000 kg. Has been established Mother Park 200 acres, breeding more than 500,000 seedlings, and to 31 counties to promote more than 60 million spike.