Three-in-one soil tester to measure humidity/pH/illuminance

Size: 290×50×38mm

Probe length: 200mm

Weight: 90g

This instrument is a good helper for gardening, it can test the pH value (pH), soil moisture and light intensity of the soil without a battery.

Please pay attention to friends~ Please soak the soil with water before inserting the soil. The probe should be inserted into the soil 2/3 of the depth (above 10CM), and the measurement is accurate

Instructions:

When measuring the pH and humidity of the soil, first insert the probe as deep as possible into the soil. (10CM has been on) Move the button on the pen to MOIST, MOIST is the moisture button, the corresponding table is MOIST, DRY is dry, WET is wet, the value 1-3 (red part) indicates that water is needed, 4- 7 (the green part) is appropriate. Please adjust the watering time according to the plant species. 8-10 (the blue part) means it is too wet.

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

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

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

Be careful not to touch the stone when inserting the electrode. Do not use too much force, otherwise it will easily damage the electrode. Wash the electrode after use.

Soil pH is also called "soil reaction". It is the acid-base reaction of the soil solution. Mainly depends on the concentration of hydrogen ions in the soil solution, expressed in pH. A solution with a pH value equal to 7 is a neutral solution; a pH value less than 7 is an acidic reaction; a pH value greater than 7 is an alkaline reaction.

Soil pH can generally be divided into the following levels:

PH value Soil pH

<4.5 Very strong acid

4.5—5.5 Strong acid

5.5—6.5 Acidity

6.5—7.5 Neutral

7.5—8.5 alkaline

8.5—9.5 strong alkaline

>9.5 Very strong alkaline

Adjustment of soil pH:

 1

, The improvement of acidic soil often uses lime to neutralize active acid, latent acid, and improve soil structure; purple shale powder, fly ash, plant ash, etc. can also be used.

 2. Artificial acidification of neutral and calcareous soils. Open flowers can use sulfur powder (50g/m2) or ferrous sulfate (150g/m2), which can lower the pH unit by 0.5-1. It can also be poured with alum fertilizer water.

 3

,Apply gypsum to alkaline soil, phosphogypsum, ferrous sulfate, sulfur powder, acid weathered coal can also be used.

The best soil pH for main crops

Crop name PH Crop name PH Crop name PH

Rice 6.0-7.0 Peanut 5.0-6.0 Chestnut 5.0-6.0

Wheat 6.0-7.0 Tobacco 5.0-6.0 Watermelon 6.0-7.0

Corn 6.0-7.0 Tea 5.0-5.5 Cabbage 6.0-7.0

Soybean 6.0-7.0 Potato 4.8-5.4 Tomato 6.0-7.0

Sugarcane 6.0-8.0 Orange, Orange 5.0-7.0 Pumpkin 6.0-8.0

Sweet potato 6.0-6.0 Litchi 6.0-7.0 Cucumber 6.0-8.0

Precautions:

1. Be careful not to touch the stone when inserting the electrode. Do not use too much force, otherwise it will easily damage the electrode. Wash the electrode promptly after use.

(It is strictly forbidden to directly reach into the water for measurement).

2. Can not be used in the soil for a long time! To avoid damage.