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一、对环境条件的要求甘蓝生育期与大白菜相似。耐寒与耐热性较大白菜强,能耐-6℃及短期-10℃的低温。叶球生产适温为5~20℃,低于10℃生长缓慢,高于25℃生长不良。幼苗耐寒耐热性均强,能耐-2~4℃,短期-8~-12℃的低温,在35℃高温下能正常生长。甘蓝叶面积大,不耐干旱,尤其不耐土壤干旱,但也不耐涝。甘蓝喜肥、耐肥,幼苗期和莲座期吸收氮素营养较多,结球期则吸收磷、钾增多。营养生长
First, the requirements of environmental conditions cabbage growth period and Chinese cabbage similar. Cold and heat-resistant cabbage strong, resistant to -6 ℃ and short-term -10 ℃ low temperature. Leaf ball production suitable temperature is 5 ~ 20 ℃, less than 10 ℃ slow growth, higher than 25 ℃ poor growth. Seedlings are strong cold and heat resistance, capable of -2 ~ 4 ℃, short-term -8 ~ -12 ℃ low temperature, 35 ℃ high temperature can grow normally. Large cabbage leaf area, intolerant of drought, especially not resistant to soil drought, but not resistant to waterlogging. Hippophae rhamnosus, fat-tolerant, seedling stage and rosette absorbed more nitrogen nutrition, while the absorption of phosphorus, potassium increased during the period. Nutritional growth