榆中縣(xian)南(nan)部二陰(yin)地(di)區氣候(hou)冷涼濕潤,生(sheng)產蔬菜(cai)病蟲害輕(qing)(qing),農(nong)藥(yao)污染輕(qing)(qing),具有(you)(you)生(sheng)產無公害大(da)白菜(cai)得天(tian)獨厚(hou)的(de)自然生(sheng)態環境條件。榆中大(da)白菜(cai)具有(you)(you)葉(xie)球炮(pao)彈(dan)形、合抱(bao)、葉(xie)幫潔白、外葉(xie)深(shen)綠、中柱短、口感佳的(de)特點。
榆中(zhong)(zhong)(zhong)大白菜(cai)產(chan)區(qu)地(di)處黃土高原、內蒙古(gu)高原、青藏(zang)高原交匯處的黃土高原,甘肅省中(zhong)(zhong)(zhong)部,屬(shu)蘭(lan)(lan)州市(shi)三縣(xian)五區(qu)之一,在蘭(lan)(lan)州東(dong)郊,縣(xian)城(cheng)距蘭(lan)(lan)州38公里(li),地(di)跨(kua)東(dong)經103°49′15"—104°34′40",北(bei)緯35°34′20"—36°26′30"之間,縣(xian)境(jing)內南(nan)北(bei)長(chang)96.6公里(li),東(dong)西(xi)(xi)寬66.4公里(li),總面(mian)積(ji)(ji)3301.64平方公里(li),海拔高度(du)1480—3670米之間。東(dong)接定西(xi)(xi)、會寧、靖(jing)遠縣(xian),西(xi)(xi)以馬銜(xian)山為(wei)界與(yu)臨洮毗鄰,西(xi)(xi)靠七里(li)河區(qu)、城(cheng)關區(qu),北(bei)隔黃河與(yu)皋蘭(lan)(lan)縣(xian)、白銀市(shi)相望(wang)。全(quan)(quan)縣(xian)轄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(zhong)(zhong)(zhong)農(nong)業人(ren)口38.8萬(wan)人(ren)。有(you)漢、回、滿、東(dong)鄉、撒拉等13個民族(zu),漢族(zu)占99%,耕(geng)地(di)面(mian)積(ji)(ji)106萬(wan)畝(mu)(mu),其中(zhong)(zhong)(zhong)水(shui)澆(jiao)地(di)36萬(wan)畝(mu)(mu),保灌面(mian)積(ji)(ji)28萬(wan)畝(mu)(mu),山旱地(di)70萬(wan)畝(mu)(mu),占耕(geng)地(di)面(mian)積(ji)(ji)的66%。榆中(zhong)(zhong)(zhong)縣(xian)地(di)勢(shi)較高,地(di)勢(shi)北(bei)高南(nan)低,西(xi)(xi)高東(dong)低,土壤深厚肥沃(wo),屬(shu)半(ban)干旱、半(ban)濕潤氣候區(qu),河谷地(di)區(qu)水(shui)源主要(yao)是境(jing)內的地(di)表水(shui)和(he)地(di)下(xia)水(shui),全(quan)(quan)縣(xian)從事(shi)蔬菜(cai)栽培的農(nong)戶有(you)6萬(wan)多戶,川塬地(di)區(qu)主要(yao)以地(di)下(xia)水(shui)資源為(wei)主,區(qu)域內無工業污染,為(wei)天然綠色(se)食品生產(chan)區(qu)。目(mu)前大白菜(cai)栽培面(mian)積(ji)(ji)2萬(wan)畝(mu)(mu),年(nian)產(chan)量8萬(wan)噸(dun),至2010年(nian)規(gui)劃面(mian)積(ji)(ji)發展達到2.5萬(wan)畝(mu)(mu),年(nian)產(chan)榆中(zhong)(zhong)(zhong)大白菜(cai)10萬(wan)噸(dun)。