榆中縣南(nan)部二陰地區氣候冷(leng)涼濕潤,生產蔬菜(cai)(cai)病(bing)蟲害(hai)輕,農藥污(wu)染輕,具有生產無公(gong)害(hai)大白菜(cai)(cai)得天獨厚的自然生態環(huan)境條件。榆中大白菜(cai)(cai)具有葉球炮彈形(xing)、合抱(bao)、葉幫潔白、外葉深綠、中柱(zhu)短、口感佳的特點(dian)。
榆中(zhong)(zhong)(zhong)大白(bai)(bai)菜產區(qu)地(di)(di)(di)(di)(di)處黃土(tu)高(gao)原(yuan)、內(nei)(nei)(nei)蒙古高(gao)原(yuan)、青(qing)藏高(gao)原(yuan)交(jiao)匯處的(de)黃土(tu)高(gao)原(yuan),甘肅省(sheng)中(zhong)(zhong)(zhong)部,屬(shu)(shu)蘭(lan)州(zhou)(zhou)(zhou)市三(san)縣(xian)(xian)五(wu)區(qu)之(zhi)一,在蘭(lan)州(zhou)(zhou)(zhou)東(dong)郊,縣(xian)(xian)城距蘭(lan)州(zhou)(zhou)(zhou)38公(gong)(gong)(gong)里(li),地(di)(di)(di)(di)(di)跨東(dong)經(jing)103°49′15"—104°34′40",北(bei)(bei)緯35°34′20"—36°26′30"之(zhi)間(jian),縣(xian)(xian)境(jing)內(nei)(nei)(nei)南(nan)北(bei)(bei)長(chang)96.6公(gong)(gong)(gong)里(li),東(dong)西(xi)(xi)寬66.4公(gong)(gong)(gong)里(li),總面(mian)積3301.64平方公(gong)(gong)(gong)里(li),海拔高(gao)度(du)1480—3670米之(zhi)間(jian)。東(dong)接定西(xi)(xi)、會寧、靖(jing)遠縣(xian)(xian),西(xi)(xi)以(yi)馬(ma)銜山為界與臨洮毗(pi)鄰,西(xi)(xi)靠(kao)七里(li)河(he)(he)區(qu)、城關區(qu),北(bei)(bei)隔黃河(he)(he)與皋(gao)蘭(lan)縣(xian)(xian)、白(bai)(bai)銀市相望(wang)。全縣(xian)(xian)轄8鎮15鄉(xiang)(xiang),268個行政村(cun),1619個村(cun)民小組,共(gong)有(you)(you)42.6萬人(ren),其(qi)中(zhong)(zhong)(zhong)農業(ye)人(ren)口38.8萬人(ren)。有(you)(you)漢、回、滿、東(dong)鄉(xiang)(xiang)、撒拉(la)等13個民族,漢族占(zhan)99%,耕(geng)地(di)(di)(di)(di)(di)面(mian)積106萬畝(mu),其(qi)中(zhong)(zhong)(zhong)水(shui)(shui)澆地(di)(di)(di)(di)(di)36萬畝(mu),保灌面(mian)積28萬畝(mu),山旱地(di)(di)(di)(di)(di)70萬畝(mu),占(zhan)耕(geng)地(di)(di)(di)(di)(di)面(mian)積的(de)66%。榆中(zhong)(zhong)(zhong)縣(xian)(xian)地(di)(di)(di)(di)(di)勢較高(gao),地(di)(di)(di)(di)(di)勢北(bei)(bei)高(gao)南(nan)低,西(xi)(xi)高(gao)東(dong)低,土(tu)壤(rang)深(shen)厚肥(fei)沃,屬(shu)(shu)半干(gan)旱、半濕潤(run)氣候區(qu),河(he)(he)谷地(di)(di)(di)(di)(di)區(qu)水(shui)(shui)源(yuan)主要是境(jing)內(nei)(nei)(nei)的(de)地(di)(di)(di)(di)(di)表水(shui)(shui)和地(di)(di)(di)(di)(di)下水(shui)(shui),全縣(xian)(xian)從事蔬菜栽(zai)培(pei)的(de)農戶有(you)(you)6萬多戶,川塬(yuan)地(di)(di)(di)(di)(di)區(qu)主要以(yi)地(di)(di)(di)(di)(di)下水(shui)(shui)資源(yuan)為主,區(qu)域內(nei)(nei)(nei)無工(gong)業(ye)污染,為天然綠色食品生產區(qu)。目前大白(bai)(bai)菜栽(zai)培(pei)面(mian)積2萬畝(mu),年產量8萬噸,至(zhi)2010年規劃面(mian)積發(fa)展達到2.5萬畝(mu),年產榆中(zhong)(zhong)(zhong)大白(bai)(bai)菜10萬噸。