榆(yu)中縣南部(bu)二陰地區氣候(hou)冷涼濕潤(run),生產(chan)蔬菜(cai)病(bing)蟲害(hai)(hai)輕,農(nong)藥污染輕,具(ju)有生產(chan)無公害(hai)(hai)大(da)白(bai)菜(cai)得天(tian)獨厚的自然生態環(huan)境條件(jian)。榆(yu)中大(da)白(bai)菜(cai)具(ju)有葉球炮彈形、合抱(bao)、葉幫潔白(bai)、外葉深綠、中柱短(duan)、口感佳的特點。
榆中大(da)白(bai)(bai)(bai)菜(cai)產區(qu)(qu)地(di)(di)處黃土(tu)高(gao)原(yuan)、內蒙古高(gao)原(yuan)、青藏高(gao)原(yuan)交匯處的(de)黃土(tu)高(gao)原(yuan),甘(gan)肅省中部,屬(shu)蘭(lan)州市三(san)縣(xian)五(wu)區(qu)(qu)之(zhi)一,在蘭(lan)州東郊,縣(xian)城距(ju)蘭(lan)州38公(gong)里,地(di)(di)跨東經103°49′15"—104°34′40",北緯35°34′20"—36°26′30"之(zhi)間(jian),縣(xian)境內南北長96.6公(gong)里,東西寬66.4公(gong)里,總面(mian)(mian)積(ji)3301.64平(ping)方公(gong)里,海(hai)拔高(gao)度1480—3670米之(zhi)間(jian)。東接定西、會寧、靖遠縣(xian),西以馬銜山(shan)(shan)為(wei)界與臨洮毗鄰(lin),西靠(kao)七(qi)里河區(qu)(qu)、城關區(qu)(qu),北隔黃河與皋(gao)蘭(lan)縣(xian)、白(bai)(bai)(bai)銀市相望。全縣(xian)轄(xia)8鎮15鄉,268個行政村(cun),1619個村(cun)民小(xiao)組,共有(you)42.6萬(wan)人(ren),其中農(nong)業人(ren)口38.8萬(wan)人(ren)。有(you)漢、回、滿、東鄉、撒拉等13個民族,漢族占99%,耕地(di)(di)面(mian)(mian)積(ji)106萬(wan)畝,其中水澆地(di)(di)36萬(wan)畝,保灌面(mian)(mian)積(ji)28萬(wan)畝,山(shan)(shan)旱地(di)(di)70萬(wan)畝,占耕地(di)(di)面(mian)(mian)積(ji)的(de)66%。榆中縣(xian)地(di)(di)勢較高(gao),地(di)(di)勢北高(gao)南低,西高(gao)東低,土(tu)壤深厚(hou)肥沃,屬(shu)半(ban)(ban)干(gan)旱、半(ban)(ban)濕潤氣候區(qu)(qu),河谷地(di)(di)區(qu)(qu)水源(yuan)(yuan)主(zhu)要(yao)是境內的(de)地(di)(di)表水和地(di)(di)下水,全縣(xian)從事蔬(shu)菜(cai)栽培的(de)農(nong)戶(hu)有(you)6萬(wan)多戶(hu),川塬地(di)(di)區(qu)(qu)主(zhu)要(yao)以地(di)(di)下水資源(yuan)(yuan)為(wei)主(zhu),區(qu)(qu)域內無工業污染,為(wei)天然綠色食(shi)品(pin)生產區(qu)(qu)。目前大(da)白(bai)(bai)(bai)菜(cai)栽培面(mian)(mian)積(ji)2萬(wan)畝,年(nian)產量8萬(wan)噸(dun),至2010年(nian)規劃面(mian)(mian)積(ji)發展達到2.5萬(wan)畝,年(nian)產榆中大(da)白(bai)(bai)(bai)菜(cai)10萬(wan)噸(dun)。