Spring corn transplanting soybeans

With the utilization of light and heat resources from spring maize to autumn sowing before 60 days, transplanting and planting a cooked soybean will produce 210 kilograms of soybeans per acre. Compared with the conventional intercropping soybeans in the corn field, the soybean yield will increase by 130 kilograms and the maize yield will increase. 160 kilograms. When the first year of autumn sowing, it should be 3.6 meters wide. In the middle and late October, 6 to 7 rows of rapeseed should be planted every time. The spacing should be 0.5 meters or more. In the middle of April of the following year, intercropping corn in rapeseed rows with a spacing of 0.8-0.9 meters. From June 15 to 18, plant soybean seedlings. Select varieties of big rot beans and green tea beans that are sensitive to short days, use open space or other crops to open 8 cm wide sowing channels for seeding, separate grains, and plant seeds of 30 to 35 grains per meter. ~ 60 days transplanting. When transplanting, the soybean seedlings should be as high as 0.5 meters or more, with thick stems, no lodging, and 8 to 10 true leaves. Soybean transplanting period as early as possible, and strive to plant early seedlings, the use of corn seedlings transplanting shading moisturizing, stable seedlings and other natural conditions to promote early-onset. Generally in early August, the corn is transplanted 10 days before the harvest. In each corn row, two rows of soybeans are planted and transplanted in rows. The row spacing is 0.5 meters, and the spacing is 0.2 meters. Soybeans should be applied to the base fertilizer before transplanting, 25 kg of calcium phosphate, 15 kg of urea, or 25 to 30 kg of 45% compound fertilizer per mu. Early autumn drought, with 0.2% potassium dihydrogen phosphate solution spray, 2 to 3 days once, and even spray twice. Pay attention to the control of leafhoppers, red spiders and other pests in the later period.

ELISA Analyzer

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.
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.

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