In recent years, the orchard's deciduous disease, rot disease, red spot disease, black spot disease, and Kang's mealworms, mites and leaf miners have shown an increasing trend. There are many reasons for this, but the unscientific clearing of the garden in spring is one of the important reasons. Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone
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The automatic enzyme immunoassay analyzer is based on the principle that the enzyme and the substrate can produce a color reaction, the absorption lines of different substances have different characteristics, and strictly abide by the Lambert-Beer law, quantitative and qualitative analysis of substances. instrument. The method of analyzing the content of various enzymes such as antigen or antibody generally mainly adopts colorimetric method. In practice, spectrophotometry is the basic working principle of an automatic enzyme immunoassay analyzer. The light emitted by the light source lamp becomes a beam of monochromatic light after passing through a filter or a monochromator. The monochromatic light beam passes through the sample to be tested in the microtiter plate, and part of the monochromatic light beam is absorbed by the sample and reaches the photodetector. The intensity of the light signal projected on it is converted into the magnitude of the electrical signal by the photodetector. This electrical signal is processed by pre-amplification, logarithmic amplification, analog-to-digital conversion, etc., and then sent to the microprocessor for data processing and calculation, and the test results are output by the display and printer. The microprocessor completes the movement in the X and Y directions of the mechanical drive through the control circuit. ELISA analyzer,enzyme immunoassay workstation,automatic enzyme immunoassay analyzer,automatic enzyme immunoassay system Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
Orchard cleaning must be done carefully. Most germs and worm eggs overwinter in stubble and diseased fruits and dead fruit. It is important to clear these things out of the orchard. But there are very few people who can earnestly clean the orchard ground.
Clearing the garden in spring can effectively prevent and kill overwintering pests and diseases, reduce the number of occurrences of pests and diseases, supplement tree nutrition, and promote budding, flowering, and fruiting. The purpose of clearing the garden in spring is to eliminate winter germs and pests. The most important method is spraying. However, the breeding of germs in spring and the emergence of pests are affected by the temperature. After the startle, the temperature is stable above 18 ° C, which is the best time to use the medicine. The temperature is low, there is no activity of diseases and insect pests, the medicinal properties are difficult to play a role, and the control effect must be greatly reduced.
The choice of medicine in Qingyuan should be scientific and the spraying should be careful. There are no leaves on the fruit trees in spring, and some fruit farmers have very little water, and most of them pass by thickly. In fact, if you want to spray the medicine carefully through the rough skin, cracks, branches, etc., the water consumption per mu should not be less than 250-300 kg, otherwise, it will be difficult to remove the pests where they cannot be sprayed. In addition, some fruit farmers only pay attention to spraying on the trees, but do not pay attention to spraying on the ground.
The automatic enzyme immunoassay analyzer adds the sample to the microwells of the pre-coated antigen or antibody microtiter plate, washes after the reaction, removes the unseparated ligand, then adds the enzyme isolate, after incubation, washes again , remove the unseparated compound, and then add the enzyme substrate, after the reaction, the colored final product is formed, and the stop solution is added to stop the reaction. The absorbance of each microwell of the microtiter plate is read by the wavelength that has been set by the spectrophotometer. The concentration value of the analyte in the sample is calculated by the absorbance value of the sample and the standard curve, so that the quantitative result can be obtained, or the absorbance of the sample is compared with that of the standard product, so that the positive or negative qualitative result can be obtained.