In general, only if the soil moisture is suitable, the root water absorption and leaf transpiration can reach the equilibrium state, and the crop can grow well. If the water content is too high or too low, then the life activities such as stopping the breath, photosynthesis, and growth will be inhibited, which will affect the crop quality. Therefore, the application value of monitoring the soil moisture and temperature using the soil moisture temperature measuring instrument is very obvious.
In fact, the amount of soil moisture will also affect the level of soil temperature, so the soil moisture temperature tester can simultaneously determine the soil moisture and temperature. Studies have shown that the effects of soil moisture on crops are mainly direct and indirect effects. The direct effects are direct effects on the physiology of the plant's ears and effects. For example, soil moisture is too low, soil drought occurs, photosynthesis does not work properly, and crops are reduced. Yield and quality; Severe water shortages cause crops to wither and die. The soil moisture is too high, worsening the aeration of the soil, affecting the activities of the soil microorganisms, and hindering the vital activities such as the respiration and growth of the crop roots. Roots were hypoxic, choking, and finally died.
The indirect effects are on plant lodgings, diseases, depth of plant roots, crop quality, field farming practices and seed quality, and harvest quality, such as high soil moisture affecting the normal growth of the crop's aerial parts, causing leggy, lodging, and miscellaneous Disease is breeding. In humid soils, the crop roots are underdeveloped, grow slowly, and distribute in shallow layers. The soil is dry, the roots of the crop are tied down and stretched to deep layers. In summer, high temperature, little rain, the content of protein in grain crops is high; low temperature, more rain is conducive to the formation of starch in the grain. The use of mechanically harvested potatoes in the condition where the soil is dry and agglomerated will cause the potato to collide with the clods and cause potato damage.
Therefore, the use of a soil moisture temperature quick-measuring instrument to monitor soil moisture and temperature can scientifically guide irrigation operations, avoid adverse soil moisture effects on crop growth, increase the yield and quality of modern crop cultivation, and have a positive impact on crop growth, water-saving irrigation, etc. Very important role.
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