At present, it is time for the tomatoes to be planted in greenhouses. At this time, there are many climate changes, high-temperature droughts and continuous heavy rain coexist, and it is difficult to manage. In order to complete planting, the following technical measures are proposed: Before the planting, the seedlings are treated with pesticides to prevent the occurrence of pests and diseases in the greenhouse. The pests and diseases are caused in a large area 1 to 3 days before the planting. The control of whitefly, spotted fly can be used imidacloprid, buprofezin, etc., fungal disease can be used Prok , carbendazim, etc., virus diseases available plant protection spirit, virus A and so on. At the time of planting, the environment-adjusted pre-planting greenhouse-covered drip-free membrane before the planting, the front foot rolled up about 1 meter high, and the rear opening vents, the shed film is best to cover the shade net to form a pergola, which can play a role in shading, reduce the shed Internal temperature, weakened light intensity. Pay attention to increase ventilation and try to avoid high temperature, drought, and strong light conditions. Planting time is usually planted in the afternoon near the evening, which is conducive to slow seedlings. When watering, planting should be done with enough water to 20-30 square meters/mu. After the emergence of the soil, keep the soil moist, so that the small water ground pouring, each watering volume should not exceed 10 square / acre. Good prevention and control of insecticides in autumn has resulted in a large number of insecticide-borne vectors, coupled with a wide range of insect-hosts and activities, which provide suitable environmental conditions for the transmission, occurrence and harm of tomato virus diseases. Therefore, the prevention and control of whitefly and whitefly is the key.
Processing high-throughput samples, intelligent reuse for large-capacity publishing, work surface: 200cm, 8 sample injection needles, 12 temperature-controlled incubation positions, 12 room temperature incubation positions, 32 plate storage positions, Sunrise microplate reader, HydroFlex plate washer, up to 512 specimens, sequential loading of samples, reagents, microplates Parallel loading of up to 6 plates for fast dispensing.
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.jilinsinoscience.com
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.