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在隔沟交替灌溉条件下,对甘蓝、绿菜花和大白菜生产上的几个主栽品种,进行了高水分利用效率品种的初步筛选。通过比较各品种单株重、单产和水分生产效率等指标,甘蓝秋甘3号的水分利用效率较中甘18、中甘22和中甘16分别提高8.0kg/m~3、17.2kg/m~3和23.0kg/m~3。绿菜花中青6号的水分利用效率较B1、B3和中青2号分别提高3.3kg/m~3、6.4kg/m~3和6.8kg/m~3。大白菜中早熟新3号和改良67的单株净菜重、产量和水分利用效率无显著差异。改良67的水分利用效率较小杂61、京翠60和橘红2号分别提高9.7kg/m~3、10.2kg/m~3和10.6kg/m~3。可以看到,不同蔬菜品种间的水分利用效率有较大的差异,选育、筛选和推广高水分生产效率的品种具有重要意义。
Under the conditions of alternate irrigation in the furrow, several cultivars of cabbage, green cauliflower and Chinese cabbage were screened for high water use efficiency. The water use efficiency of cabbage Qiu Gan 3 was increased by 8.0kg / m ~ 3 and 17.2kg / m respectively compared with that of Zhonggan 18, Zhonggan 22 and Zhonggan 16 by comparing the individual weight per plant, yield and water productivity. ~ 3 and 23.0 kg / m ~ 3. The water use efficiency of green cauliflower Zhongqing 6 was increased by 3.3kg / m ~ 3,6.4kg / m ~ 3 and 6.8kg / m ~ 3 respectively compared with B1, B3 and Zhongqing 2. There was no significant difference in net plantation weight, yield and water use efficiency of Chinese cabbage in early maturity new 3 and improved 67. The water use efficiency of modified 67 was less than that of hybrid 61, Jingui 60 and Juhong 2 increased by 9.7kg / m ~ 3, 10.2kg / m ~ 3 and 10.6kg / m ~ 3, respectively. It can be seen that there are great differences in water use efficiency among different vegetable varieties. Breeding, screening and promoting varieties with high water productivity are of great significance.