Effect of Temperature and Light on Physiological Activity of Plants

Physiological activities of plants are most concerned with photosynthesis and respiration. Among them, photosynthesis is particularly important. It is a process of producing organic matter that allows organic matter to accumulate in the plant and then store it. Photosynthesis of plants requires water and carbon dioxide. Both of these factors affect the rate of photosynthesis of plants. At the same time, not only these factors affect photosynthesis, but also the temperature and light intensity in the environment directly affect the rate of photosynthesis of plants. . In order to speed up the process of plant nutrient synthesis, the temperature, light level, and carbon dioxide content in the environment can be appropriately adjusted, and the ambient temperature and illuminance can be measured using a temperature illuminometer, and the carbon dioxide content can be measured using carbon dioxide. Instrument to carry out.
Scientists used photosynthesis of Caragana leaves to compare and understand and found that when the light intensity increases, the light and velocity of the leaves increase significantly. When the light intensity is high, the respiration of the plants is slower than when the light intensity is low. This result shows that the organic matter synthesis process of plants is accelerated at high light intensity. However, it is not an unlimited increase in light intensity, but when the temperature reaches a certain value, it will be counterproductive. At the same time, the effects of temperature on photosynthesis and respiration are: When the temperature rises, the respiration becomes weak, but the light intensity increases, but it is not an unlimited increase in temperature, but when the temperature reaches a certain value, it will be counterproductive. From this, we can see that when the temperature and illuminance increase within a certain range, the growth of the plant will be promoted, and beyond a certain limit, the promotion will be inhibited. Therefore, a monitor is used to monitor the illuminance and temperature at any time. Instrument-temperature illuminance recorder is very necessary. At this time, the temperature illuminance recorder can timely sense changes in temperature and illuminance, and then make the fastest response to the changed environmental parameters.
In different growing seasons, the photosynthetic rate, light compensation point, light saturation point and saturation temperature of C. korshinskii under different light intensities were higher than those of temperature and light intensity, but the temperature of CO2 compensation point and the intensity of light were all high. The lower the respiration rate is, the lower the temperature and the higher light intensity of the blade than the temperature and light intensity of the blade is better adapted to high light intensity and the ability of CO2 assimilation. Therefore, it is necessary to use temperature illuminance monitor to regulate the temperature and illuminance in the environment in order to increase the photosynthesis and reduce the respiration of plants.