豫白菜5号(原名(?)89—8)大白菜(?)河南省新乡市农科所利用(?)交(?)亲和系3039配制而成的早熟抗热一代杂种。1995年6月通过河南省农作物品种审定委员会审定并命名,同年获中国杨陵第二届农业博览会后稷金像奖,其杂交制种方法获国家专利。1997年9月被国家科委列入国家科技成果重点推广计划。目前已推广到河南、江苏、安徽、浙江、云南、广西、陕西、河北等地。 一、特征特性 豫白菜5号外叶绿色,叶面少毛轻皱,叶柄绿白,株型紧凑,株高38厘米,开展度50厘米,球高26厘米,球径18.5厘米,球形指数1.4。叶球叠抱,叶帮薄,球心洁白,软叶率53％,净菜率73％,单球净重2公斤左右。 1、早熟、丰产 豫白菜5号生长期只有55～60天,亩产净菜一般为4000公斤,高者可达5000公斤,较小杂56增产20％左右,具有早熟、丰产的特点。 2、抗病、稳产 该品种的两个自交系是在高温、高湿条件下经多年严格 Chinese cabbage 5 (formerly known as (?) 89-8) Chinese cabbage (?) Xinxiang City, Henan Province, Agricultural Science and Technology Department ()? In June 1995, it was approved and named by Henan Province Crop Variety Approval Committee. In the same year, it was awarded the “Houjiju” Prize by the Second Agricultural Exposition of Yangling in China and its hybrid seed production method won the national patent. September 1997 by the State Science and Technology Commission included in the national key projects to promote scientific and technological achievements. Has been extended to Henan, Jiangsu, Anhui, Zhejiang, Yunnan, Guangxi, Shaanxi, Hebei and other places. First, the characteristics of Yum cabbage on the 5th green leaves, foliar hairless light wrinkle, petiole green and white, plant compact, height 38 cm, the degree of 50 cm, the ball 26 cm, 18.5 cm diameter, spherical index of 1.4. Leaves stacked ball, leaf thin, white ball center, soft leaf rate of 53%, net food rate of 73%, net weight of 2 kg single ball. 1, precocious, high yield Yu cabbage on the 5th growth period of only 55 to 60 days, net yield per mu is generally 4000 kg, the highest up to 5000 kg, a smaller hybrid 56 yield about 20%, with a precocious, high yield characteristics. 2, disease resistance, stable yield The two varieties of inbred lines at high temperature, high humidity conditions after years of strict