This does not require power supply, and the three functions are all in one. It can measure the humidity of the soil \PH degree \the intensity of sunlight required by plant photosynthesis. Easy to use.

This instrument is a good helper for gardening. It can test the pH value (ph), soil humidity and illumination of the soil without batteries.

Material: Plastic

single Weight: 103g

single soil meter size: 33*10.5 * 4.5CM
Probe length: 20.5cm (can not be directly put into the water to measure water Oh will damage the electrode!)

box gauge 54*53 * 37cm/100PCs weight 12KG

please note that before inserting the soil, Please soak the soil with water. The probe must be inserted into the soil at a depth of 2/3 (above 10cm) to measure it accurately.

Usage:

when measuring the pH value and humidity of the soil, insert the probe into the soil as deep as possible. (Over 10cm)

toggle the button to MOIST on the pen. MOIST is the moisture key, corresponding to MOIST, DRY, WET, and 1-3 (red part

points) it indicates that watering is required. 4-7 (green part) is appropriate. Please adjust the watering time according to the variety of plants. 8-10 (Blue part) says Alaska Pollock wet

yes.

Toggle the button to PH on the pen, PH is the PH key, corresponding to the 8-3.5 value on the table, ALKALINE is alkali, ACDIC is acid, value 7 is basic

it is neutral. The smaller the number, the greater the acidity. Please adjust the soil pH according to the plant variety.

The LIGHT key is the illuminance. The measurement range is 0-2000 lumens. The larger the value, the stronger the illumination. Please decide whether to cover it according to the plant variety.

Yin.

When using, be careful not to touch the stone when inserting the electrode. Do not use too much force, otherwise it will easily hurt the electrode. Wash the electrode clean after using it.

Toggle the button to MOIST on the pen. MOIST is the moisture key, corresponding to MOIST, DRY, WET, and 1-3 (red part) indicating that watering is required, 4-7 (green part) is suitable. Please adjust the watering time according to the variety of plants. 8-10 (Blue part) says that Alaska pollock is wet.

Toggle the button to PH on the pen, PH is the PH key, corresponding to the 8-3.5 value on the table, ALKALINE is alkali, ACDIC is acid, value 7 is basic

it is neutral. The smaller the number, the greater the acidity. Please adjust the soil pH according to the plant variety.

The LIGHT key is the illuminance. The measurement range is 0-2000 lumens. The larger the value, the stronger the illumination. Please decide whether to shade according to the plant variety.

Soil pH

soil pH is also called "soil reaction". It is the acid-base reaction of soil solution. Mainly depends on the concentration of hydrogen ions in soil solution

degree, expressed as pH value. Solution with pH value equal to 7 is neutral solution; PH value less than 7 is acidic reaction; PH value greater than 7 is alkaline reverse

should.

Soil pH can generally be divided into the following levels:

PH soil pH

<4.5 extremely acidic

4.5-5.5 strong acid

5.5-6.5 acid

6.5-7.5 neutral

7.5-8.5 alkaline

8.5-9.5 strong alkaline

> 9.5 extremely alkaline

.

Adjustment of soil pH:
1. Lime is often used for the improvement of acidic soil to achieve the purpose of neutralizing active acid, latent acid and improving soil structure; Purple shale powder, fly ash, grass Ash, etc.

 2. Artificial acidification of neutral and calcareous soil. Sulfur powder (50g/square meter) or ferrous sulfate (150g/square meter) can be used for open flowers, which can reduce 0.5-1 pH unit. It can also be poured with alum fertilizer.
3. Gypsum can be applied in alkaline soil, and phosphogypsum, ferrous sulfate, sulfur powder and acidic weathered coal can also be used.