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郑白四号（豫白菜六号）大白菜是郑州市蔬菜研究所利用自交不亲和系ams－8和石4－3配制而成的中熟一代杂种。具有多抗性，丰产稳产性好，品质佳，商品性状优，种植效益高等优点。1995年6月9日经河南省农作物品种审定委员会审定命名，为国家“八五”攻关上交品种。特征特性生育
Zheng Bai IV (Henan cabbage VI) Chinese cabbage is the Zhengzhou Institute of vegetables using self-incompatibility ams-8 and 4-3 prepared from stone middle-generation hybrids. With multi-resistance, high yield and good stability, good quality, superior product traits, planting benefits and higher advantages. June 9, 1995 by the Henan Province Crop Variety Approval Committee validated named for the national “Eighth Five-Year” key varieties. Characteristic characteristics of fertility