加强肥水管理和病虫防治,保证肥水供应,减轻病虫为害,促进叶球形成,是大白菜结球期的重点管理工作,具体技术措施如下: 一、水分管理 在大白菜结球期出现缺水干旱,使叶片萎蔫下垂,导致脱帮而不结球。因此,要保证水分充足,均衡供应,切忌时多时少,一般应保证早、晚各淋一次清水,使土 Strengthen fertilizer and water management and pest control, to ensure fertilizer and water supply, reduce pests and diseases, promote leaf ball formation, is the key management of Chinese cabbage node, the specific technical measures are as follows: First, the water management of Chinese cabbage at the junction of missing Drought water, wilting the leaves, leading to help off without balling. Therefore, to ensure sufficient water supply, balanced supply, should not be long and less, the general should ensure that morning and evening shower a clear water, the soil