Orange trees like sunshine, suitable for production in fertile, loose, slightly acidic, well-drained sandy soil, relatively hardy, potted orange should be removed in early spring in early April (after the Ching Ming) removed from the outside, and then trimmed, according to "strong Branches are lightly cut, weak branches are heavy sheared, and the overlapping branches, old branches, cross branches, and disease and insect branches are cut to save nutrients, provide air and light, and promote new branches, so that the branches and leaves are moderately dense and the trees are well-balanced. Immediately after pruning, use general tree guard to disinfect and prevent infection. At the beginning of May, when the plants start to sprout leaves, it is advisable to topically apply a thin fertilizer solution every 10-12 days and begin to dilute and gradually thicken. By the end of June, when the flowers are luxuriant, the consumption of water and fertilizer will be large. That is, fertilization and water should be diligently applied, and the plants should be sprayed with Huahua No. 3 to convert the vegetative growth of plants into reproductive nutrients and suppress the growth of the main shoots. Concentrate nutrition to promote flower and fruit protection. Due to the limitations of flower pots, soil and nutrition are difficult to meet the natural growth of orange trees, so when necessary, pruning and fruits and vegetables should be carried out in pots. In addition to the usual fertilization of water, some fruits should be removed after flowering to retain a few fruits. Waiting to be watched.
These test kits are performed on blood samples from infected persons became a useful tool in elucidating the links between several cases. These links would not have been made if viral particles were looked for via PCR methods. This is due to the fact that the patient's immune defence might be successful in eliminating the virus and hence removing any trace of where it came from. However, when specific antibodies are searched for in the same patient, they will be able to be detected because they stay within the blood for several years. Commercial immunoassay tests to detect COVID-19 include a dual ELISA test to be performed. This detects specific IgA and IgG against the virus in the blood of infected patients. There is also an automated fluorescent immunoassay system to measure quantitatively or semi-quantitatively the concentration of the targeted analyte, which can be the viral antigen or IgM/IgG.
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