The soil thermometer small encyclopedia

Thermometer is used to test the soil temperature thermometer, the accurate judgment and measuring soil temperature. For agriculture, gardening and the environment underground temperature monitoring. Widely used in farming, greenhouse crops in the ground temperature measurement. The tail is needle type, can be directly inserted into the soil, soil temperature. In the process of the growth of the plants, plant growth has a strong link with the soil temperature, especially in sowing period, inappropriate temperature should be timely find and take corresponding measures, in order to avoid adverse consequences caused by the temperature. Soil temperature and the relationship between agricultural production has the following two aspects. Directly affect within certain limits of temperature, soil temperature is higher, the faster crop growth and development. A certain period of time in a year in low or high temperature, often has a harmful effect on agricultural production. Crop seeds must be within the scope of suitable soil temperature before germination. General cold cereal crops, seed germination Mark Twain to an average of 1 a 5; Thermophilic crops for 8 a 10. Compared with the temperature influence on seed germination and emergence, soil temperature is much more directly. But the soil temperature with the terrain conditions, soil moisture, farming, and crop coverage while under the influence of change in the weather. Thermometer is used to test the soil temperature thermometer, the accurate judgment and measuring soil temperature. The role of the soil thermometer in agricultural production is more and more big, it to the growing of crops, and having the effect that cannot underestimate application in the development of agricultural production will be more and more widely. Soil is also a bimetallic thermometer thermometer, it is with different expansion coefficient of solid combination together two pieces of metal heat element, generally made spiral wound, its one end fixed and the other end with a pointer. When the temperature changes, the thermal component of curvature change, free end rotation, drive the pointer indicates the temperature value on the dial.