4 in 1 meter soil PH tester thermometer hygrometer detection and analysis of soil quality PH meter water ..

Because the company provides more than just buy a total of over 200 yuan before the invoice, so some models require two or more before billing. Electronic digital display Four soil analyzer is the latest soil speed measuring device, the main test soil pH, moisture and humidity, temperature and light intensity plant, using a 9V carbon battery, simple probe length 200 mm. This parameter measurement instrument display through the LCD. The instrument also has a low battery indicator and automatic power off function. It saves time and energy efficiency. This instrument applies to flowers and grass planting, landscaping. Features: 1, measuring the current light intensity environment LOW-, LOW, LOW +, NOR-, NOR, NOR +, HGH-, HGH, HGH + 2, measuring the moisture content of the soil DRY +, DRY, NOR, WET, WET + 3, measuring soil temperature, temperature range: -9 ~ + 50 ℃ (16 ~ 122 ℉), (accuracy: 1 ℃ / 1 ℉) 4, measurement of soil pH, PH measuring range: 3.5-9.0 parameters: temperature: + 5 ℃ ~ + 40 ℃ Size: 340mm * 63mm * 36mm Probe Length: 200mm Weight: 200 g large-screen LCD user interface temperature metric conversion function Low battery warning feature automatic power-off function, 5 minutes without any operation, automatic simple shutdown, portable power supply: 9V battery installation method before using the battery, remove the probe protective cover 1, illumination measuring A. Press the ON button to turn on the instrument B. aligned highest point source light sensor window. C. The current intensity of the light will be displayed on the LCD monitor. Note: Do not block the light or shadow to the light sensor manufacturer 2, PH measurement range on the back of A. [PH / ℃] button to push to the PH position. B. probe vertically into the soil, need to be tested as soon as possible. C. Press the [ON] button to start the measurement. D. PH value test will be displayed on the LCD screen E. more precise measurement values ??obtained the required times. Note: 1. The vertical insertion probe edge in the middle of the plant stems. 2. Gently push the soil, in order to avoid damage to the probe. 3. If the soil is too dry or fertile measured can not be measured accurately PH value, the user can sprinkle a little water, half an hour and then measure it again 3, moisture measurement A on the back of [PH / ℃] button to push to ℃ B position as vertical as possible into the soil. C Press NO key to start the measurement of soil moisture values ??D test will be displayed on the LCD screen. E multiple times come to measure the exact value required. 4. Temperature measurement; and A when measuring humidity, soil temperature will also be displayed on the LCD screen. B Press [℃ / ℉ OFF] button to set the humidity display is ℃ or ℉. Note: If the user does not put the probe into the soil, the display is accurate external space environment temperature. Soil pH Soil pH also known as "soil reaction." It is acid-base reaction of soil solution. Depending on the concentration of hydrogen ions in the soil solution to pH values. solution of pH = 7 neutral solution; pH value of less than 7, the reaction is acidic; pH greater than 7 is alkaline reaction. Soil pH can generally be divided into the following stage follows: pH soil pH <4.5 highly acidic acidity 6.5-7.5 5.5-6.5 4.5-5.5 strongly acidic neutral alkaline 8.5-9.5 7.5-8.5 strongly alkaline> 9.5 highly alkaline soil pH on soil fertility and plant growth is large, northwest China, north many large soil pH, pH Southern Red small value. Planting and soil pH can be adapted to crops and plants. Such as acid red soil area planted hi tea, and alfalfa strong alkali ability. The effectiveness of soil pH on nutrient is also great, as great effectiveness neutral soil phosphorus; alkaline soil trace elements (manganese, copper, zinc, etc.) poor effectiveness. In agricultural production should be noted that soil pH, and actively take measures to adjust. Common crop optimal soil pH range? Soil pH effectiveness of plant nutrients, soil structural and crop have a great relationship. First, the soil nutrient organic state by soil microbial activities to participate in, to make it into nutrients available for plant uptake state, decomposition of organic matter and microorganisms involved in the majority of growth in the near neutral environment, soil nutrients valid of generally near neutral reaction is the best. Secondly, the soil pH on soil structure is also affected. Acidic soils, the hydrogen ion concentration? Hydroids  Lu Wan Wo installed it? Calcium ion substitution leaching out, it is easy to acidic soil compaction. And alkaline soils with high exchangeable sodium ions and hydroxide ions, so that the soil particles dispersed, dry compaction, resulting in poor structural earth. In addition, soil pH and plant growth also has a very close relationship. Nature, some plants on soil pH conditions are strict requirements, they can only in a particular pH range of growth, these plants can play its indication that the soil pH, so that indicator plants. Such as azalea grow only in acidic soils, acidic soils called indicator plants; cedar calcareous soil indicator plants, and S. salsa is alkaline indicator plants. Different cultivated plants have different optimum growth pH range (see table below), know their respective optimal growth range, we can according to local conditions based on soil pH, select the appropriate planting of crops; or according to crop, adjust the soil pH to the proper range. Soil pH adjustment: 1, modified acid soils often used lime. Achieve active acid, latent acid, objectives and improve soil structure; also available in purple shale powder, fly ash, ash and the like. 2, neutral and calcareous soil acidification Artificial Flowers and Plants available sulfur powder (50g / m2) or ferrous sulfate (150 g / m2), can reduce the 0.5 - 1 pH unit. It can also be alum fertilizer irrigated system. 3, alkaline soils plaster, but also with phosphogypsum, ferrous sulfate, sulfur powder, acidic weathering coal. The main crop grown in soil pH optimum pH crop crop name name name pH pH rice crop chestnut 5.0-6.0 6.0-7.0 5.0-6.0 wheat peanut tobacco 5.0-6.0 6.0-7.0 6.0-7.0 watermelon tea corn 6.0-7.0 5.0-5.5 cabbage Soybean potato 4.8-5.4 6.0-7.0 6.0-7.0 6.0-7.0 cane 6.0-8.0 orange tomato, pumpkin orange 5.0-7.0 6.0-8.0 6.0-7.0 cucumber sweet lychee 6.0-6.0 6.0-8.0