论文部分内容阅读
大白菜生长期短,产量高,要求水肥条件高。加强大白菜莲座期和包心期的水肥管理,是确保大白菜丰产丰收的关键措施。一、莲座期水肥管理此期是根系大量发生和叶片生长骤增时期,同时气温转向温和,正是大白菜生长的良好时机,该期生长的莲座叶是包心期制造光合产物的器官,只
Chinese cabbage growth period is short, high yield, requiring high water and fertilizer conditions. Strengthening the management of water and fertilizer cabbage rosette stage and pericarp is to ensure that the key to high-yield bumper harvest of cabbage. First, the rosette period of water and fertilizer management This period is a large number of root causes and leaf growth surge period, while the temperature turned moderate, it is a good time for the growth of Chinese cabbage, rosette leaves during this period is the period of production of photosynthetic products organ, only