Many fertilizers have a killing and repellent effect on pests. Ingenious fertilization has the effect of controlling pests.
Phosphate fertilizer Helicoverpa armigera is sensitive to phosphorus during spawning, and escapes when exposed to phosphorus. During the spawning of cotton bollworm, 2% superphosphate leaching solution is sprayed every 5-6 畦, leaving 1 畦 without spraying, which can drive the cotton bollworm to concentrate on spawning, so as to eliminate it centrally.
Silicon-calcium fertilizer, corn, soybean and other crops, 30-40 kg of silicon-calcium fertilizer per acre can avoid the damage of corn borer and bean pod. For rice, wheat and other crops, applying 20-30 kg of siliceous calcium fertilizer per acre can greatly reduce the damage of armyworms.
Nitrogen fertilizers such as urea, ammonium bicarbonate and ammonia are volatile, and have certain stimulation, corrosion and fumigation effects on pests. Use urea 250-800 grams, add 100 grams of washing powder, spray 150 kg of water, can control pests such as red spiders, mites and so on.
The grass ash is taken from 20 kg of grass ash, soaked in 80 kg of water for a day and night, and the filtrate is sprayed, which can effectively control the mites. In the onion, garlic, and leeks, 20-30 kg of grass ash per acre of ditch can be applied to prevent root sputum and increase production.
Fertilizer mixed with 50% dichlorvos EC (concentration 1%) in 1% urea solution can kill red spiders that harm citrus, cotton and flowers. 50 grams of 40% dimethoate emulsifiable concentrate per acre, 250 grams of urea, 50 kilograms of water, sprayed at the booting stage of rice, can not only prevent rice pests, but also promote rice yield. In the soybean seedling stage and the initial flowering stage, 50 grams of ammonium molybdate, 50 grams of 50% phoxim emulsifiable concentrate per acre, and 50 kg of water are sprayed to treat both molybdenum deficiency and control of aphids and pea pods.
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Saliva Antigen Test
The COVID-19 Antigen Saliva Test kit is a lateral flow immunoassay intended for the preliminary screening and qualitative detection of nucleocapsid protein antigen from severe acuterespiratorysyndrome coronavirus SARS-CoV-2which causesthe Coronavirusdisease(COVID-19),in direct saliva sample from individuals suspected of coVD-19 by their healthcare provider within the first seven days of symptom onset.The COVID-19 Antigen Saliva Test kit is for professional use only and is intended to be used as an aid in the diagnosis of SARS CoV-2 infection.
SARS-CoV-2is anenvelopedsingle-stranded RNAvirus ofthe Baenus COVD-19 is an acute respiratory infectious disease. People are generally susceptible.Currently. the patients infected bytheSARS-CoV2are the main source ofinfection:asvmptomatic infected peope car also be an infectious source Based on thecurrentepidemiologica investigation, the incubation period is 1to 14 daysmostly 3to 7 days The main manifestations include feverfatigue and drycough.Nasa congestion, runny nosesore throatmyalgia and diarhea are found in a few cases.
Results are for the identification of SARS-CoV-2 nuceocapsid protein antigen. The SARS-CoV-2 antigen is generally detectable in upper respiratory specimens during the acute phase ofinfectionPositive results indicate the presence of SARS-CoV-2viralantigenshowever cinicai corelation with patient history and other diaanostic information is key to determine status of infection.Positive results don't preclude bacterialinfection or co-infection with other yiruses.eaatveresuts To patients with symptom onset for more than seven days should be treated as presumptive and confirmation with a molecular assayand patient management may be performed according to local regulations as needed.
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