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一、环境质量要求生产基地要远离有工业“三废”污染的地区,其环境质量应符合《NY/T5009—2001无公害蔬菜产地环境条件》。生产场地应清洁卫生,地势平坦,土质疏松、肥沃,无三年以上重茬,前茬以葱蒜类、豆类、禾本科作物为宜,忌与十字花科蔬菜重茬。二、生产季节和茬口安排大白菜为半耐寒性蔬菜,不同品种和类型之间差异较大。烟台市栽培的大白菜有春、夏、秋三茬,其中以秋茬栽培为主。现以秋大白菜为例说明无公害大白菜生产技术。
First, the environmental quality requirements Production base away from the industrial “three wastes ” pollution in the area, its environmental quality should be consistent with “NY / T5009-2001 pollution-free vegetable origin environmental conditions.” Production sites should be clean, flat, loose soil, fertile, no more than three years of stubble, the former crop with onion and garlic, beans, gramineous crops is appropriate, bogey and cruciferous vegetables stubble. Second, the production season and crop arrangement Chinese cabbage is a half hardy vegetables, different varieties and types of differences between the larger. Chinese cabbage cultivation in Yantai City, spring, summer and autumn stubble, of which the cultivation of autumn-based. Autumn cabbage is an example to illustrate the pollution-free cabbage production technology.