High intelligence soilHigh intelligence soil fertilizer nutrient rapid measurement instrumentBasic principle: It is researched and developed based on the measurement of many standards such as land water potential, water content, pH value, temperature, etc. According to the Chinese measurement program, this type of measurement can also be clearly understood under sunlight. It can be carried independently or operated easily, and can also support printing signal data. It supports the correct power supply of AC voltage and electrical board.

（1） Technical requirements for equipment:

1. Having national metrological certification, fully complying with relevant requirements, and using without risk;

2. The testing principles and standards adopted for each project comply with national, industry, and local standards.

3. Quantitative accuracy, reasonable price, high cost-effectiveness, stable performance, and few malfunctions;

4. (1) Equipped with LCD display, color touch screen, and multi-channel simultaneous detection,

(2) Equipped with USB output interface and additional WiFi transmission module, data can be uploaded to the platform for remote viewing

(3) Features such as automatic zeroing, direct reading of concentration, curve storage, automatic printing, and a fully Chinese menu;

5. High degree of automation, simple operation, suitable for batch analysis, human-machine interactive operation, users do not need complex professional knowledge; Dual use AC/DC, built-in lithium battery, capable of field flow testing;

6. An integrated intelligent instrument used for on-site measurement of various soil chemical indicators, capable of detecting soil, fertilizers, crops, and other testing items. It has the function of querying and printing historical data, which can print out test dates, test times, types, test items, test values, etc. The device port can be opened for adding detection items in the future.

High intelligence soil fertilizer nutrient rapid measurement instrumentBuilt in sensor interface, equipped with FDR sensor, capable of measuring soil moisture content, soil environmental temperature, and soil conductivity. Adopting the Android intelligent operating system, with more efficient and user-friendly operation, the instrument comes standard with WiFi network upload, 4G network transmission, GPRS wireless remote transmission, and fast data upload. Adopting a dual row multi-channel design, it can quickly detect 12 samples at once, and all detection items can be detected simultaneously in all channels, greatly improving detection efficiency and reducing detection costs.

For suspected contaminated land plots that are planned to be reclaimed or have already been reclaimed, and whose use has been changed to residential, public management, and public service land, Shouguang Branch of Weifang Ecological Environment Bureau strictly supervises the land pollution responsible persons and land use rights holders to conduct soil pollution investigations. For suspected contaminated land plots that have not undergone soil environment investigations and risk assessments, as well as contaminated land plots that have not been treated and repaired or do not meet relevant standards, the natural resources and planning departments prohibit the issuance of construction project planning permits for the development and utilization of relevant land plots. Strictly implement the access standards for construction land to ensure that the people can live in peace of mind.

High sensitivity 7-inch capacitive touch screen, high-definition and high interactive display, greatly reducing the tedious operation and errors of traditional instruments. Each channel is equipped with a four wavelength cold light source, and all light sources achieve constant current and voltage regulation to ensure wavelength stability. Silicon semiconductors, as signal receiving systems, have a lifespan of up to 100000 hours. Good reproducibility and high accuracy.

1. Soil nutrients: Ten items including ammonium nitrogen, nitrate nitrogen, available phosphorus, available potassium, organic matter, total nitrogen, pH value, salt content, moisture, and alkali hydrolyzed nitrogen; ● Medium and trace elements: calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, etc.
2. Fertilizer nutrients: ● Nitrogen, phosphorus, and potassium in elemental fertilizers; Ammonium nitrogen, nitrate nitrogen, phosphorus, potassium, and urea in compound (mixed) Hefei and urea; Available nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus, total potassium, organic matter, various humic acids, trace elements (calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon), etc. in organic fertilizers.
3. Plant nutrients: ● Nitrogen, phosphorus, and potassium in the plant; Nitrates and nitrites; Calcium, magnesium, sulfur, iron, manganese, boron, zinc, copper, chlorine, silicon, etc.
4. Nutrients of tobacco leaves: 20 items including total nitrogen, total phosphorus, total potassium, reducing sugars, water-soluble total sugars, boron, manganese, iron, copper, calcium, magnesium, etc.
5. Soil and fertilizer heavy metals: nearly ten heavy metals such as lead, chromium, cadmium, arsenic, mercury, etc.
6. Food (fruits, vegetables, etc.): nitrate, nitrite, heavy metals (lead, chromium, cadmium, arsenic, mercury), etc.
7. Water quality: ● Ammonium nitrogen, nitrate, nitrite, phosphorus, potassium, hardness PH、 Iron, copper, manganese, zinc, boron, chlorine, sulfur, silicon, etc.

2、 Technical indicators of soil fertilizer nutrient detector:
1. Power supply: AC 220 ± 22V DC 12V+5V (can be powered by a car power supply or choose the instrument's built-in lithium battery)
2. Power: ≤ 5W
3. Range and Resolution: 0.001-9999
4. Repeatability error: ≤ 0.05% (0.0005, potassium dichromate solution)
5. Instrument stability: Drift less than 0.3% within one hour (0.003, transparency measurement). After the instrument is turned on and preheated for 5 minutes, there will be no drift in the displayed numbers within 30 minutes (transparency measurement); The numerical drift within one hour shall not exceed 0.3% (for transparency measurement) and 0.001 (for absorbance measurement); The digital drift within two hours should not exceed 0.5% (0.005, measured for transparency).
6. Linear error: ≤ 0.2% (0.002, copper sulfate detection)
7. Sensitivity: Red light ≥ 4.5 × 10-5 Blue light ≥ 3.17 × 10-3 Green light ≥ 2.35 × 10-3 Orange light ≥ 2.13 × 10-3
8. Wavelength range: Red light: 680 ± 2nm; Blue light: 420 ± 2nm; Green light: 510 ± 2nm; Orange light: 590 ± 4nm
9. PH value (pH): (1) Test range: 1-14 (2) Accuracy: 0.01 (3) Error: ± 0.1
10. Salt content (conductivity): (1) Test range: 0.01% to 1.00% (2) Relative error: ± 5%
11. Soil moisture technical parameters Water unit:% (g/100g); Moisture content testing range: 0-100%; Error less than 0.5%
12. Simultaneous extraction and determination of efficient N, P, and K nutrients in soil, and scientific recommendation of fertilizer application rates (drafter of the Ministry of Agriculture's rapid testing industry standard)
13. Simultaneous, rapid, and accurate detection of nutrients such as nitrogen (N), phosphorus (P), and potassium (K) in fertilizers
14. Testing speed: Test a soil sample (N, P, K) for ≤ 30 minutes (including pre-treatment time, without the need for any attachments from the user)
15. Simultaneously test 8 soil samples for ≤ 1 hour (including pre-treatment time)
16. Instrument size: 43 × 34.5 × 19cm, net weight of host: 5.1kg
17. Test one soil sample (N, P, K) for ≤ 30 minutes, and simultaneously test three soil samples (N, P, K) for ≤ 40 minutes;
18. Test one fertilizer sample (N, P, K) for ≤ 50 minutes, and simultaneously test three fertilizer samples (N, P, K) for ≤ 1.5 hours.

The soil fertilizer nutrient detector is fully functional: the testing items are comprehensive both domestically and internationally (various types of chemicals can be purchased).
Fully equipped: This instrument integrates medicine, equipment, and instruments, making it easy to carry and equivalent to a small laboratory. Suitable for agricultural service departments or agricultural material distributors, fertilizer manufacturers to conduct soil testing and fertilization, and to identify the authenticity of fertilizers.
Easy to operate and fast, the finished medicine can be used immediately after opening the bottle, without the need for configuration.
Reliable performance: The working stability is 6 times better than the national standard JJG179-90 index, and the repeatability reaches the level of the grating spectrophotometer index.