After the onion is sown, the seedling stage needs to be fertilized and managed, and if the fertilization is in place, the emergence rate and survival rate of the onion seedlings can be significantly improved.
After the onion is sown, what periods need to be fertilized and managed
In addition to applying the bottom fertilizer, according to the growth cycle of onion seedlings, combined with the characteristics of nutrient absorption in different periods, it is necessary to carry out seedbed fertilization management within these periods after emergence, before the seedlings are together, the two leaves are one heart, and the seedlings are lifted.
Onion seedlings are really patted
What are the roles of seedling management
Bottom fertilizer and seedbed fertilizer are to be able to replenish soil organic matter, fertilize fertility, supplement nitrogen, phosphorus and potassium, and at the same time turn the ground to loosen the soil and create a good environment for the root growth of allium plants;
Fertilization before seedlings after emergence is to promote root growth, because for the growth of green onions, the main factor that determines the yield in the early stage is the root system, so root-promoting fertilization management can be carried out before the seedlings are formed;
After the emergence of seedlings, qi seedlings before
Two leaves are fertilized, mainly used to supplement nitrogen, phosphorus and potassium, with the continuous growth of onion seedlings, the demand for nitrogen, phosphorus and potassium nutrients continues to increase, the content in the soil is limited, and fertilization mainly plays a role in supplementing nutrients;
Fertilization during the seedling lifting period, at this time, the onion seedlings are about to enter the colonization and transplanting stage, so in order to quickly increase the height and thickness of the seedlings, so that they can meet the transplanting standards, it is necessary to fertilize and manage them.
Shallot seedlings to be transplanted
When fertilizing and managing the seedlings at the seedling stage, it is necessary to combine the different needs of the onion seedlings in different periods for nutrients, carry out targeted nutritional supplementation, and cannot use a single fertilizer from beginning to end, but should be scientifically formulated and used together.
Many onion friends will ignore the importance of management of the green onion seedling stage, excessive fertilizer or less fertilization and improper fertilization, the impact on the emergence rate and survival rate is very large, if you encounter problems in the seedling process, you can always find onions to understand.