At present, autumn tomatoes, eggplants, peppers and other vegetables have entered the initial fruiting stage, that is, the management stage with reproductive growth as the mainstay. Many vegetable farmers have begun to find ways to promote more fruit setting and fast fruit expansion, so that they do not pay much attention to nutritional growth. In fact, this understanding and practice is incorrect. In the early fruiting period of vegetables, the trees have not grown up. Only by strengthening the vegetative growth, the trees can grow up first, so as to lay the foundation for high yield. Otherwise, if too much fruit is retained, resulting in excessive reproductive growth, vegetables will appear as weak trees and small fruits.

Recently, as the weather changes, the temperature difference between day and night outside has widened, which is more suitable for vegetable growth. It is a favorable time to change the weak growth of vegetables in the early period and cultivate strong trees.

Widen the temperature difference between day and night and promote nutrient accumulation

Vegetables entering the initial fruiting period should focus on using appropriate temperature changes to adjust the balance of plant vegetative growth and reproductive growth. In vegetable cultivation, we have repeatedly emphasized the need to widen the temperature difference between day and night, promote the accumulation of organic nutrients, and increase vegetable production. The supply of vegetable organic nutrition is mainly carried out by leaves. The temperature during the day is 28℃-30℃, which is most suitable for photosynthesis. The photosynthesis rate is the highest and the organic nutrition produced is the most. Respiration is another major factor affecting the accumulation of nutrients. Pay attention to lowering the night temperature and reducing respiratory consumption to promote the accumulation of nutrients. Recently, the temperature difference between day and night has been increasing. We should make good use of the current environmental conditions to increase the temperature difference between day and night and promote nutrient accumulation.

Regulate the growth of plants and keep fruits reasonably

How much fruit the plant retains depends on the plant growth and weather conditions. If too much fruit is retained, most of the nutrients will be consumed by the fruit under the plant, and the tree will fall. Once it encounters continuous cloudy weather, the plant will grow weakly, which is not conducive to growing strong trees. In this case, the fruit should be kept reasonably according to the growth of the plant. For example, do not have more than three first ears of tomatoes, and generally leave two. The second ears can leave three fruits, and the fruits will be retained in the future. Do not leave the door peppers and counter peppers of sharp peppers and colored peppers; Eggplant generally starts to retain fruit from the eggplant.

Timely pruning vines

Now, the purpose of pruning vines is not just to hang the trees so that they don't fall down. Many vegetable farmers have discovered that pruning vines is also a way to regulate the growth of vegetables. Take pepper as an example. The initial result is to promote the seeds, and the branches can be hung up tightly to maintain a vigorous growth. When it grows too vigorously, loosen the sling or adjust the angle of the sling to pull the branches obliquely or flatten to suppress the vigorous growth of the plants. If you are planting tomatoes, you can let the tomatoes grow on their knees first, that is, before the first flower of the tomatoes blooms, a section of about 30 cm long from the base of the tomato stems is lying down to the north to inhibit the vegetative growth of the plants and promote the reproductive growth of the tomatoes. Promote fruit setting.

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Auto Chemistry Analyzer

The automatic biochemical analyzer is an instrument that measures a specific chemical composition in body fluids according to the principle of photoelectric colorimetry. Due to its fast measurement speed, high accuracy and small consumption of reagents, it has been widely used in hospitals, epidemic prevention stations and family planning service stations at all levels. The combined use can greatly improve the efficiency and benefits of routine biochemical testing.
principle
The automatic analyzer is to automatically run all or part of the steps of sampling, mixing, warm bath (37°C) detection, result calculation, judgment, display and printing results and cleaning in the original manual operation process. Today, biochemical tests are basically automated analysis, and there are fully automatic biochemical analysis systems designed for large or very large clinical laboratories and commercial laboratories, which can be arbitrarily configured according to the laboratory's testing volume.
Whether it is the fastest-running (9600Test/h) modular fully automatic biochemical analyzer today, or the original manual-operated photoelectric colorimeter for colorimetry, the principle is the use of absorption spectroscopy in spectroscopic technology. It is the most basic core of the biochemical instrument.
Optical system: is a key part of ACA. Older ACA systems used halogen tungsten lamps, lenses, color filters, and photocell assemblies. The optical part of the new ACA system has been greatly improved. ACA's beam splitting system can be divided into front splitting and rear splitting due to different light positions. The advanced optical components use a set of lenses between the light source and the cuvette to convert the original light source. The light projected by the lamp passes through the cuvette to bring the beam to the speed of light (unlike traditional wedge beams), so that the spot beam can pass through even the smallest cuvette. Compared with traditional methods, it can save reagent consumption by 40-60%. After the spot beam passes through the cuvette, the spot beam is restored to the original beam through this group of restoration lenses (wide difference correction system), and is divided into several fixed wavelengths (about 10 or more wavelengths) by the grating. The optical/digital signal direct conversion technology is used to directly convert the optical signal in the optical path into a digital signal. It completely eliminates the interference of electromagnetic waves to the signal and the attenuation in the process of signal transmission. At the same time, the optical fiber is used in the signal transmission process, so that the signal can achieve no attenuation, and the test accuracy is improved by nearly 100 times. The closed combination of the optical path system makes the optical path without any maintenance, and the light splitting is accurate and the service life is long.

Constant temperature system: Since the temperature of the biochemical reaction has a great influence on the reaction results, the sensitivity and accuracy of the constant temperature system directly affect the measurement results. The early biochemical instruments used the method of air bath, and later developed into a dry bath with constant temperature liquid circulation which combines the advantages of dry air bath and water bath. The principle is to design a constant temperature tank around the cuvette, and add a stable constant temperature liquid that is odorless, non-polluting, non-evaporating and non-deteriorating in the tank. The constant temperature liquid has a large capacity, good thermal stability and uniformity. The cuvette does not directly contact the constant temperature liquid, which overcomes the characteristics of the water bath type constant temperature being susceptible to pollution and the uneven and unstable air bath.

Sample reaction stirring technology and probe technology: The traditional reaction stirring technology adopts magnetic bead type and vortex stirring type. The current popular stirring technology is a stirring unit composed of multiple groups of stirring rods that imitate the manual cleaning process. When the first group of stirring rods is stirring the sample/reagent or mixed solution, the second group of stirring rods performs high-speed and high-efficiency cleaning at the same time. The set of stirring bars also undergoes a warm water washing and air drying process at the same time. In the design of a single stirring rod, a new type of spiral high-speed rotating stirring is adopted, and the rotation direction is opposite to the spiral direction, thereby increasing the stirring force, the stirred liquid does not foam, and reducing the scattering of light by microbubbles. Reagent and sample probes are based on the principle of early capacitive sensing, but slightly improved to increase the alarm of blood clots and protein clots, and re-test results according to the alarm level, reducing sample aspiration errors and improving the reliability of test results. . Large-scale biochemical instruments can detect more than 1,000 tests per hour, so automatic retesting is very important. Subjective evaluation of test results and manual retesting can no longer meet clinical needs.

Other aspects: barcode recognition of reagents and samples and computer login. Due to the lack of barcode recognition function of early biochemical instruments, there are more opportunities for errors. In recent years, both imported and domestic chemical instruments have adopted barcode detection. The use of this technology in biochemical instruments has provided technical support for the development of high-speed ACA, and also made the instrument quite supportive. The software development is simple and easy, therefore, barcode detection is the basis for the intelligence of the instrument. Open reagents, as an important factor for hospitals to choose models, whether the instrument supports open reagents is very important. After the reagents are opened, hospitals and scientific research units can choose their own reagent suppliers, and have a greater degree of freedom in measuring the price, the reliability of the test results, and the validity period of the reagents. Ion Selective Electrode Analysis Accessory (ISE), human serum and urine electrolyte indicators are very important, and hospitals can save money by adding ISE to the ACA system.

Bio Chemistry Analyzer, Clinical Chemistry Analyzer, Blood Chemistry Analyzer,Urine Chemistry Analyzer

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