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In the field of agriculture, leaf surface humidity is often closely related to the occurrence of plant diseases and insect pests. Therefore, if we can pay close attention to the changes in the humidity of the leaf surface and study the relationship between its numerical value and the occurrence of pests and diseases, then we can monitor Predict the occurrence of pests and diseases so as to protect crops in time and ensure their safe growth. At present, a method for detecting the leaf surface humidity widely used in agricultural scientific research and production is the direct use of a leaf surface humidity sensor for measurement. The instrument can simulate plant leaves to obtain moisture, so not only the measurement accuracy is high, but also the authenticity is strong, which can well reflect the changes of the plant leaf surface humidity.
In order to simulate the water content of the leaves of the plants, the leaf surface humidity sensor was simulated and processed. Not only was the volume similar to the size of an ordinary leaf, but also the appearance of the leaf surface humidity sensor looked like a leaf of the plant. The change in dielectric constant of the upper surface of the medium to measure the amount of moisture present. When the sensor is used, the sensor is installed near the leaf of the plant under test, and the sensor will simulate the process of obtaining water from the leaf of the plant. However, to say that it is different from ordinary blades, it may be that the end of the leaf surface humidity sensor is connected with the cable, and the monitored data can be collected and saved in time for further analysis and research.
The surface temperature coefficient of the leaf surface humidity sensor is similar to that of the green leaf surface. Its evaporation and water retention are the same as those of a real leaf surface. Therefore, this simulated leaf structure design can truly reflect the change process of the plant leaf manifestation of water, and is related to scientific research and agriculture. Production provides accurate and scientific data. It is widely used in greenhouse plant cultivation, tree planting, turfgrass cultivation, and humidity measurement of various fruit and tree leaves, which can provide support for promoting the fine management of these agricultural planting projects, and realize the goal of reducing pesticide harm, increasing production and increasing efficiency. Therefore, it can be said that the leaf surface humidity sensor is an important research instrument for promoting the development of modern precision agriculture.
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