From the end of effective tillering to the beginning of panicle differentiation, rice is the most drought-tolerant period. The production practice proves that moderate bake field can effectively promote the development of seedling roots and increase nutrient absorption, which is an important link for vegetative growth and reproductive growth. This area belongs to the main rice planting area. It has a good effect on rooting, disease prevention, lodging resistance, early maturity and yield increase by baking rice in some paddy fields. The rice seeding rate in the baking field is 67.5%, and the yield of 667 square meters is At 678 kg, the unearthed rice has a panicle rate of 53% and the 667 m2 yield is 639 kg. First, the role of baking 1. Effective control of ineffective tillering, so that the seedlings enter a stable, to ensure that the main stem and early tiller have sufficient nutrient supply, increase the effective ear rate. 2. Create good conditions for applying panicle fertilizer, dwarf and strong stalks to attack the big ears. 3. Enhance the permeability of soil, accelerate the decomposition of organic fertilizers, reduce the harm of acid substances produced by the action of black roots and anaerobic bacteria, enhance the absorption capacity of roots, and expand the nutrient area. 4. Make the stems of the plants thick, control the height of the plants, and enhance the lodging resistance. 5. Reduce the humidity in the field, improve the ventilation and light transmission conditions, enhance the photosynthesis of the leaves, and reduce the occurrence of blight and rice blast. 6. Suning weeds, reducing soil consumption, saving water and reducing production costs. Second, the baking method Practice has proved that it is necessary to ensure that the early-maturing varieties of 667 square meters produce 450 kilograms, and the mid-late ripe varieties of 667 square meters produce more than 600 kilograms. There are two basiss: one is the number of seedlings, and the early maturing varieties need 700,000 basic spikes per 667 square meters. The large ear type of the variety reached 750,000, the dwarf type of the late-maturing variety reached 75-800,000, and the effective tiller was calculated at 65%. The second is time, about 50 days after the emergence of early-maturing varieties of early-water seedlings, about 60 days for mid-maturing varieties, and about 70 days for late-maturing varieties (the number of days of transplanting should be reduced). The number of seedlings is sufficient, but the time has not arrived or the time to reach the number of seedlings can not meet the requirements, high-yield rice fields should be baked. However, it is not possible to use the same time, the ground, and the seedlings. Plants grow prosperous, density is too large, the leaves are covered with thick green, premature sealing should be properly exposed to early sun, heavy sun; vice versa, late sun, light sun; seedlings should reach early or exceed the planned indicators early; the soil quality is poor, Heavy sand and thin earth can be light or not. Alkali large rice fields are not sun-baked or lightly sun-dried; the skins are hard to be sun-dried; people walk with their footprints and heavy sun; people walk without footprints, but the soil can't be whitish, and the leaves are dark green and yellow green to reach this standard. After it has dried up, it maintains shallow water and strong stalk joints. After the “jogging periodâ€, it will catch up with the young ears and differentiate the fertilizer at the right time, so that the leaf color will turn green in time to promote the stalk and attack the big ear, and realize the big ear, the ear and the grain. Large, full, and high yield. Urine analyzer is an automated instrument for determining certain chemical components in urine. It is an important tool for automated urine inspection in medical laboratories. This instrument has the advantages of simple and fast operation. However, improper use of urine analyzers and many intermediate links and influencing factors directly affect the accuracy of automated analysis results, which will not only cause errors in experimental results, but even delay diagnosis. Therefore, operators are required to understand the principles, performance and precautions of automated instruments. And the knowledge of influencing factors and other aspects are fully understood, and the correct use of automated instruments can make the results obtained by the urine analyzer more reliable and accurate. Medical Urine Analyzer,Semi Automatic Urine Analyzer,Urine Analyzer and Strips,Accurate Urine Analyzer Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
application
In the 1950s, a single dry chemical test strip method was used to measure protein and glucose in urine, and the changes in the color of the test strip were observed with the naked eye and compared with the standard plate to obtain the corresponding values. In the 1980s, due to the high development and widespread use of computer technology, automated urine analyzers also developed rapidly, gradually developing from semi-automatic to fully-automated. Urine analyzers are often divided into two categories according to the test items: â‘ 8-11 screening combined urine test strips mainly used for newly diagnosed patients and health examinations. The eight test items included protein, glucose, PH, ketone bodies, bilirubin, urobilinogen, red blood cells (occult blood) and nitrite; in addition to the above eight tests, urine leukocyte test was added to the nine test items. On the basis of 9 of the 10 urine analyzer testing items, the urine specific density test was added. 11 testing items have added vitamin C testing. â‘¡It is mainly used for the observation of the curative effect of the diagnosed diseases, such as the combination test strip of PH, protein and occult blood (red blood cells) for kidney disease; the combination test strip of PH, sugar and ketone body for diabetes; the combination of bilirubin and urobilinogen for liver disease test tape.
principle
This type of instrument is generally controlled by a microcomputer, and the color change on the test strip is measured semi-quantitatively by using a spherical integrator to receive dual-wavelength reflected light. There are several reagent pads containing various reagents on the reagent strip, each of which reacts independently with the corresponding components in the urine, and displays different colors. The depth of the color is proportional to a certain component in the urine, and there is another in the reagent strip" Compensation pad", as the urine background color, compensates for the errors caused by colored urine and instrument changes.
Put the reagent strip with urine adsorbed in the colorimetric tank of the instrument, and the various reagent pads that have produced chemical reactions on the reagent strip are illuminated by the light source, and the reflected light is received by the spherical analyzer, and the photocell of the spherical analyzer is reflected. Irradiate with dual-wavelength light (measurement light passing through the filter and a reference light), and the selection of each wavelength is determined by the detection item.
The instrument automatically calculates the reflectance according to the following formula, and then compares it with the standard curve, and automatically finds and prints the corresponding results of various components. If the content of a certain component in the urine is high, the reflected light of the corresponding reagent pad is dark, otherwise it is strong.
Reflectance fraction: R(%)=Tm.Cs/TsCm×100%
In the formula, R(%) is the reflectivity; Tm is the reflection intensity of the reagent pad to the measurement wavelength; Ts is the reflection intensity of the reagent pad to the reference wavelength; Cm is the reflection intensity of the calibration pad to the measurement defect length; Cs is the calibration pair. Reflection intensity at the reference wavelength.