Soil moisture is an important part of the soil and plays an important role in the growth of crops. China's water resources are very scarce, and agricultural water accounts for about 70% of the country's total water use, of which more than 90% is used for irrigation. At present, the national average irrigation water utilization rate is only 43%, and the agricultural output per unit water consumption is far lower than that of developed countries. At the national level, water saving potential is great. The measurement of farmland moisture and precise irrigation are an inseparable part of fine agriculture. By quickly and accurately measuring the soil moisture, mastering the farmland's public opinion is not only conducive to the implementation of water-saving irrigation, but also accurate water supply is also conducive to improving crop yield and quality. .
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