榆中(zhong)縣南部二(er)陰地區氣候(hou)冷涼濕(shi)潤,生(sheng)(sheng)產蔬(shu)菜(cai)病(bing)蟲(chong)害(hai)(hai)輕(qing),農藥污染輕(qing),具有生(sheng)(sheng)產無公害(hai)(hai)大(da)白菜(cai)得(de)天(tian)獨厚(hou)的自然生(sheng)(sheng)態環境(jing)條(tiao)件。榆中(zhong)大(da)白菜(cai)具有葉球炮彈形、合(he)抱、葉幫(bang)潔白、外(wai)葉深綠(lv)、中(zhong)柱(zhu)短、口感佳的特(te)點。
榆中(zhong)大(da)白(bai)(bai)菜(cai)產區(qu)(qu)地(di)(di)處(chu)黃(huang)(huang)土高(gao)原、內(nei)(nei)(nei)蒙古(gu)高(gao)原、青藏(zang)高(gao)原交匯(hui)處(chu)的黃(huang)(huang)土高(gao)原,甘肅省中(zhong)部,屬(shu)蘭州(zhou)市(shi)三縣(xian)(xian)五(wu)區(qu)(qu)之(zhi)一(yi),在蘭州(zhou)東(dong)(dong)(dong)郊,縣(xian)(xian)城(cheng)距(ju)蘭州(zhou)38公里(li)(li),地(di)(di)跨(kua)東(dong)(dong)(dong)經103°49′15"—104°34′40",北緯35°34′20"—36°26′30"之(zhi)間(jian),縣(xian)(xian)境內(nei)(nei)(nei)南北長96.6公里(li)(li),東(dong)(dong)(dong)西寬66.4公里(li)(li),總面(mian)(mian)積(ji)(ji)3301.64平方公里(li)(li),海拔高(gao)度1480—3670米之(zhi)間(jian)。東(dong)(dong)(dong)接定(ding)西、會寧、靖(jing)遠縣(xian)(xian),西以馬銜山(shan)為(wei)界與(yu)臨洮毗鄰,西靠七里(li)(li)河區(qu)(qu)、城(cheng)關區(qu)(qu),北隔(ge)黃(huang)(huang)河與(yu)皋蘭縣(xian)(xian)、白(bai)(bai)銀市(shi)相(xiang)望(wang)。全(quan)縣(xian)(xian)轄8鎮(zhen)15鄉,268個行政村(cun),1619個村(cun)民(min)小組,共有42.6萬(wan)(wan)人,其中(zhong)農(nong)業人口38.8萬(wan)(wan)人。有漢、回、滿、東(dong)(dong)(dong)鄉、撒拉等13個民(min)族,漢族占(zhan)99%,耕(geng)地(di)(di)面(mian)(mian)積(ji)(ji)106萬(wan)(wan)畝(mu),其中(zhong)水澆地(di)(di)36萬(wan)(wan)畝(mu),保灌面(mian)(mian)積(ji)(ji)28萬(wan)(wan)畝(mu),山(shan)旱地(di)(di)70萬(wan)(wan)畝(mu),占(zhan)耕(geng)地(di)(di)面(mian)(mian)積(ji)(ji)的66%。榆中(zhong)縣(xian)(xian)地(di)(di)勢(shi)較高(gao),地(di)(di)勢(shi)北高(gao)南低(di),西高(gao)東(dong)(dong)(dong)低(di),土壤深厚(hou)肥沃,屬(shu)半干旱、半濕潤氣候區(qu)(qu),河谷地(di)(di)區(qu)(qu)水源(yuan)主要是境內(nei)(nei)(nei)的地(di)(di)表水和地(di)(di)下水,全(quan)縣(xian)(xian)從事蔬(shu)菜(cai)栽培的農(nong)戶有6萬(wan)(wan)多戶,川(chuan)塬地(di)(di)區(qu)(qu)主要以地(di)(di)下水資源(yuan)為(wei)主,區(qu)(qu)域內(nei)(nei)(nei)無工業污染,為(wei)天然(ran)綠色(se)食(shi)品生產區(qu)(qu)。目(mu)前(qian)大(da)白(bai)(bai)菜(cai)栽培面(mian)(mian)積(ji)(ji)2萬(wan)(wan)畝(mu),年產量8萬(wan)(wan)噸(dun),至2010年規(gui)劃面(mian)(mian)積(ji)(ji)發(fa)展(zhan)達到2.5萬(wan)(wan)畝(mu),年產榆中(zhong)大(da)白(bai)(bai)菜(cai)10萬(wan)(wan)噸(dun)。