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Temperature and humidity recorders were used to measure and control soil moisture content. Chlorophyll content meters were used to measure chlorophyll under different drought conditions. Portable leaf area meters were used to understand the effects of drought stress on leaf area. Through measurement and comparison, it was found that under proper drought conditions, the lack of soil moisture content led to an increase in chlorophyll content. Through a variety of tests, it was found that both the chlorophyll a and chlorophyll b content, and the chlorophyll content in plants. The height reflects the growth rate and quality of the plant. The proper drought will promote the growth of the plant, but if it does not alleviate the drought, it will directly affect the survival of the plant.
In the case of insufficient soil moisture, the transpiration of plants will be alleviated. The process of plant transpiration is also the process of transport of nutrients in the plant. Therefore, in the case of insufficient soil moisture, nutrients are transported to the leaves and Stems, etc., will all decrease. Using a portable leaf area meter to measure at this time can understand the change in leaf area. It is also because the nutrients in the root are not transported to the stems and leaves of the plant in a timely and reasonable manner, which results in excess nutrients being absorbed and used by the roots of the plant. Therefore, the roots of the plant will increase.
The influence of drought stress on the chlorophyll, leaf area and roots of plants is influenced by the different physiological mechanisms of the crop under the condition of insufficient soil moisture content, thus affecting the synthesis and accumulation of dry matter in the crop. , Soil moisture monitoring can use the temperature and humidity recorder for real-time monitoring. How does the lack of soil moisture affect the various physiological mechanisms in the process of plant growth?