Due to the large number of weeds in the corn field this year, some farmers even used excessive amounts of acetochlor herbicide, resulting in a large amount of pesticide residues in the soil, which affected the growth of the lower glutinous wheat. Farmer friends should pay attention to observing the appearance of wheat and take early measures to create conditions for high yields. Symptoms of wheat damage: Wheat plant growth is slow at the seedling stage, the wheat seedlings are weak, and yellowing is common. The leaves are yellowish-green in color and gradually dry from the tips of the leaves to the base of the leaves. Dead seedlings appear severely. The roots of wheat are shallow and the root hairs are underdeveloped. In the early stage, the root cap yellowed and the lower bar was obstructed. In the later period, the roots turned dark brown and eventually became black and died. After the weather has turned cold, wheat is more vulnerable to frost damage. The leaves are dry and the wheat seedlings cannot safely pass winter. Control methods: 1 correct use of acetochlor, strict control of usage, dosage, so as not to cause harm to the next crop. 2 Strengthen the management of the field, reduce the concentration of acetochlor in the soil by watering and fertilizing, and reduce the harm of phytotoxicity. 3 After the wheat is found to have been victimized, it can be sprayed with an agent that promotes the growth of the crop to reduce or attenuate the phytotoxicity. 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. antibody diagnostic kit, rapid antibody test kit, rapid antibody diagnosis,covid-19 antibody diagnosis, antibody detection kit Shenzhen Uni-medica Technology Co.,Ltd , https://www.unimed-global.com