Background:
Conductivity is something that we had a rough idea of when we were studying physics. Have you heard of soil conductivity? Why use soil conductivity sensor to monitor soil conductivity?
Soil solution has conductivity, and the strength of conductivity can be expressed by conductivity. Soil conductivity is an index to measure soil water-soluble salts. It is an important property of soil and a factor to judge whether salt ions in soil limit crop growth.
Soil conductivity can guide the fertilization of plants. Nutrients that plants need are often added with compounds. Such as ammonium nitrate for nitrogen, that microbes break down for the plant to use.
Soil conductivity reflects the actual situation of soil salinity under certain moisture condition. Influence the transformation, existence and availability of soil nutrients. Is a threshold that limits the activity of plants and microorganisms.
Function of soil conductivity sensor:
In a certain concentration range, the salt content of soil solution is positively correlated with the conductivity, and the more salts dissolved, the greater the conductivity of the solution. Therefore, soil conductivity can be measured by soil conductivity sensor to indirectly reflect soil salt content, thus providing guidance for fertilization management.
Soil salinity increased year by year, resulting in soil acidification and secondary salinization. This is mainly because on the one hand, perennial or seasonal soil cover changes the water and heat balance in the natural state. The soil is not sufficiently washed by rain, causing salt to accumulate on the surface.
On the other hand, it is also caused by unreasonable fertilization. Therefore, it is very necessary to use the soil conductivity sensor to monitor the soil conductivity to master its pollution status.
The electrical conductivity of the crops we touch more in our daily life.
Let’s take cucumber as an example. As a widely cultivated crop, cucumber is a common fruit and vegetable in both north and south China as well as abroad. When the electrical conductivity of the soil is within the normal range, cucumbers grow happily and luxuriantly. On the contrary, the growth is slow, gradually withered yellow wilt.
In daily life, it is difficult to find the growth of crops quickly, and there are many examples of crop loss caused by information delay. Soil conductivity, as an indispensable parameter in the study of fine agriculture, contains abundant information reflecting soil quality and physical properties. For example, soil salinity, moisture, temperature, organic matter content and texture all affect soil conductivity to varying degrees.
The effective acquisition of soil conductivity is of great significance for determining the spatial and temporal distribution differences of various field parameters, which also lays a foundation for the popularization of modern fine agriculture based on information and knowledge.