A golf cart battery is a type of accumulator whose function is to store limited electrical energy for use in appropriate places. Mainly used in golf cart, electric sightseeing car, electric viewing RV, electric sweeper and other products.
Golf cart batteries belong to lead storage batteries. It uses a lead plate filled with spongy shape lead as a negative electrode, a lead plate filled with lead dioxide as a positive electrode, and 1.28% dilute sulfuric acid as an electrolyte. When it is charged, electrical energy is converted to chemical energy, and when it is discharged, chemical energy is converted to electrical energy.
When the battery is discharging, the metal lead is the negative electrode, and oxidizes to lead sulfate. Lead dioxide is the positive electrode, which undergoes a reduction reaction and is reduced to lead sulfate. When a battery is charged with direct current, lead and lead dioxide are formed at the poles. After the power is removed, it returns to its pre-discharge state and forms a chemical battery. Lead batteries are batteries that can be recharged and discharged repeatedly, which are called secondary batteries.
Its voltage is 2V, 4V, 6V, 8V, 12V and so on. After a period of use, the battery should be supplemented with distilled water to keep the electrolyte containing 22~28% dilute sulfuric acid.
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The experiment was conducted at the experimental site of the Agricultural Research Institute of the Jericho League in Inner Mongolia. The soil on the test site was black Wuhua soil with uniform fertility, and the former was corn. The content of soil organic matter in 0-30 cm soil layers was 12.6 mg/g, total nitrogen was 1.32 mg/g, dissolved nitrogen was 123.5 mg/kg, available phosphorus was 71.69 mg/kg, available potassium was 86.58 mg/kg, and pH was 7.8. In the test, the fertilizer nitrogen was uniformly 30 kg/hO, the seed fertilizer was mainly composed of diammonium phosphate (containing P2O546%, N18%), and the non-phosphorus area was converted by urea (including N46%). The deficiency of phosphate fertilizer was supplemented by three materials (including P2O546%), Fertilizer potassium is potassium sulfate (including K2O50%), top dressing is urea. The experiment was repeated twice and totaled 64 communities. The area of ​​the plot was 48m2 (length 8m, 10 lines, row spacing 0.6m), of which 4 were sampling areas and 6 were behavior measuring areas. Each time five samples were sampled per plot (10 seedlings), the number of leaves, number of leaves expanded, plant height, and leaf area were measured, and the above-ground organs of the plants were divided into leaves, sheaths, stems, tassels, loquat leaves, and ears. (cobs, seeds, etc.) are separated and the fresh weight is said. Samples were taken quantitatively, baked in an oven at 105°C for 30 minutes, then dried at 80°C to constant weight and weighed after cooling.
Leaf area analyzer measured the leaf area of ​​spring maize and found that the leaf area coefficient showed a single-peak curve during the whole growth period. The peak appeared before and after the loosening period, but the LAI that had a greater impact on the yield was the grain filling period followed by loose powder. The relationship between maximum LAI and yield is also a single-peak curve. When the maximum LAI is less than 5.8, the yield increases with the increase of LAI. This relationship is similar to the compact LAI, showing that the compactness or flatness of the plant type is not Equal to the size of the tightness. The tightness of the varieties is not only affected by the plant type, but also influenced by cultivation techniques and other factors, and has good solidity, strong turf, and disease resistance at high density. The dynamic change of photosynthetic potential and its relationship with yield are similar to those of LAI. Among the three main factors of LAD, NAR, and economic coefficient, LAD has the greatest direct impact on yield. The relationship between NAR and yield was not significant at all stages of birth. Changes in NAR were mainly affected by the period of own fertility and were less affected by cultivated factors.
Different cultivation methods affect the photosynthesis of spring corn
The model of the photosynthetic performance indicators of spring maize at different growth stages quantitatively revealed the influence and relationship of comprehensive agronomic measures on each index, and also revealed the dynamic changes of each index, providing targeted and quantitative management of high-yield cultivation optimization. Theoretical basis. The photosynthetic performance index of different species, different yield levels and the corresponding cultivation techniques are different, but the current research on photosynthetic performance focuses more on the impact of variety or density, and the impact of comprehensive agronomic measures on the photosynthetic performance of the population is rarely reported. . Therefore, it is necessary to carry out research on the effect of high-yielding cultivation techniques for spring maize on physiological indicators in accordance with the actual situation.