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What are the soil testing instruments? How should I use it?
Jan 12, 2019

What are the soil testing instruments? With the development of technology, modern agriculture is becoming more and more technical and scientific. The soil research for planting agricultural products is also very thorough. What kind of soil is suitable for planting species, and the soil is grown in plants. The missing elements can be measured by soil testing equipment. In addition, measuring soil pollution problems also requires the use of soil testers. So, is there so much use for many types of testers? This is true. Here Xiaobian will briefly introduce you to the type of soil tester.


The testing instruments for soil types sold in the market include: soil nutrient speed measuring instrument, soil pH measuring instrument, soil salt measuring instrument, soil moisture measuring instrument, soil testing formula fertilizing instrument, soil moisture measuring instrument and the like. Although the name is many, it is to detect soil moisture, humidity, nitrogen, phosphorus, potassium, trace elements (calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, etc.) and heavy metals (lead, chromium, cadmium). , arsenic, mercury, etc.). Here are a few simple ones.


1. Soil pH tester


What are the soil testing instruments? How should I use it?


The soil pH tester mainly detects soil pH, moisture and humidity. The probe can be inserted into the soil to be tested until the soil is no more than 2.5 cm from the fuselage. Wait up to 10 seconds, and the data can be read after the pointer is stable. The operation is relatively simple.


2, soil salt analyzer


The soil salt analyzer can also be called a soil salt velocity meter. We know that the greater the salt content in the water, the stronger the conductivity of the water. Therefore, according to the size of the conductivity, the degree of mineralization in the water can be calculated. Directly embedded, read data, and easy to operate.


3, soil moisture and humidity tester


The soil moisture rapid tester mainly detects moisture and humidity, and realizes rapid measurement of soil moisture based on dielectric theory and frequency domain measurement method. Since the change of soil dielectric constant usually depends on the water content of soil, the relationship between output voltage and moisture is The water content of the soil can be calculated. Measuring method: plug-in type, buried type, section, etc., easy to operate.


4, soil nutrient speed tester


The soil nutrient rapid tester mainly includes nine items: ammonium nitrogen, nitrate nitrogen, available phosphorus, available potassium, organic matter, total nitrogen, pH value, water content, and alkali nitrogen. The medium and trace elements: calcium, magnesium and sulfur. , iron, manganese, boron, zinc, copper, chlorine, silicon, etc. Heavy metals: heavy metals such as lead, chromium, cadmium, arsenic, and mercury.


5, soil testing formula fertiliser


What are the soil testing instruments? How should I use it?


The soil testing formula fertilization instrument mainly detects soil water, pH, salt content, ammonium nitrogen, available phosphorus, available potassium, organic matter, alkali nitrogen, nitrate nitrogen, effective calcium, effective magnesium, effective sulfur, effective iron, and effective Manganese, effective boron, effective zinc, available copper, available chlorine, available silicon, total nitrogen, total phosphorus, total potassium, etc. Built-in expert fertilization system. Easy to operate, no calibration required, direct test, fast speed.


Understand the type of soil tester, we can choose according to your own needs when you choose. How should the soil test equipment be used? General instruments have relevant instructions for use. We only need to follow the instructions for use, but we must understand the parameters of each element.


1. Technical parameters of nutrient measurement:


(1) Stability: A value (absorbance) drifts less than 0.003 within three minutes


(2) Repeatability: A value (absorbance) is less than 0.005


(3) Linearity error: less than 3.0%


(4) Sensitivity: red light ≥ 4.5×10-5; blue light ≥ 3.17×10-3 (5) wavelength range: red light 620±4nm; blue light 440±4nm; green light 520±4nm


(6) Shock resistance: qualified


(Note: The above technical parameters are higher than the national standard)


2, PH value (pH) measurement technical parameters:


(1) Test range: 1 to 14


(2) Error: ±0.1


3, salt quantity (conductance) measurement technical parameters:


(1) Test range: 0.01% to 1.00%


(2) Relative error: ± 5%


4. Soil moisture technical parameters


Moisture unit: %(m3/m3)


Moisture content test range: 0-100%


Accuracy: ±2%


After understanding what the soil testing equipment is and how to operate it, you can choose the right instrument to operate according to your own needs, but it should be noted that care must be taken during the operation to avoid errors.


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