Aquaculture ecological polyculture technology
First, Dianchi preparation
In 2007, Mapo Township conducted an experiment and selected 8 ponds, each with an area of ​​2 acres. After the dredging of the pond in mid-March, the loosening pond was 35 cm deep and the bottom of the pool was leveled, excavating fish ditch and collecting fish pit. In the pond, the "fish" shape, "back" shape, or "ten" shape are used to excavate fish farming ditch. The ditch width is 1.5 meters, the slope ratio is l:2, and the ditch depth is 0.6 meter. Set fish pits in the four corners of the pond, 0.8 meters deep, 1.5-2 meters in the curve! Install anti-escape nets at the inlet and outlet.
After the pond is well-prepared, 100-1 50 kg of quick lime is sprayed to dry pond clearing pond for disinfection. Dianchi plowing 20-30 centimeters, after filling the ground, water pool, water level is maintained at 10 seats of rice celery right, digging a number of puddles in the pool, the lime will be poured into the puddle, after the dissolving heat will be evenly spilled around the lime. The next day with water cultivators, completely kill pathogens. Qingchi 2 days after the 2000 kg of Mushi fermented manure or mixed compost and other farmyard manure as base fertilizer, Schiff base fertilizer with a variety of organic fertilizer, while using a small amount of inorganic fertilizer. Mix evenly and fill the water l 5-2 O cm. Stir the pool water into mud to ensure that the small seepage water and fertilizer do not flow.
Second, the cultivation of quail and fish stocking
The seedlings were planted on March 28-29, and fresh, non-invasive, disease-free, mature and mature varieties were planted. The cultivars are mainly E. lianii No.2, No.4 and No.5, and large floating flowers. The planting time is controlled after the frost breaks, the temperature is stable at more than 15°C, and the sprouts are planted before germination. Seedlings must be guaranteed at least 3 knots, the bigger the better. When playing music
Handle gently to prevent bruising, planting with the digging, and pay attention to the protection of the top buds and fibrous roots. Reasonable dense planting, planting density of 2 50-2 70 kg per mu. Planting methods: When the seedlings are planted, ten ditch of lO-20 cm deep is dug according to the shape and size of the seedlings, and then the seedlings are put into soil, and the seedlings are turned to the sun and tilted at 30 degrees, and the soil is leveled. After releasing the seedlings, the water is released and the water depth is 7-10 cm so as to increase the pool temperature in the spring and promote the growth of seedlings. When the phytoseiid pods were planted, the water was 0.8 water, the spacing between the plants was 0.5-0.6 meters, and the planting depth was 13-18 cm.
The species of fish is Zhenzi oyster. When raising the fry, the fish should be determined according to the requirements of the fish on the water temperature, and the axillary bud and temporal lobe are not damaged by the fish. The activities of raising two pieces of vertical leaves and fish bait to the lotus root will not adversely affect the development of the calf's growth.
When the water temperature stabilizes at about 20°C, it can be stocked. 7 days before stocking, 20 g/m of seedlings were used; the calcined milk was turned into a slurry, and the entire pool was disinfected with a tub or plastic bucket (be careful not to spill on the loquat leaves). Fish species require uniform, disease-free, injury-free and robust quality.
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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