How do you measure the pH of soil? What is the easiest way to determine soil pH?

How to measure soil pH, today I will hand over to you a simple little method!

Take a cup of soil from the garden, scoop a few spoonfuls into two containers, add vinegar to one container, if it sizzles, the soil is alkaline.

Add water to another container that is enough to moisten the soil and form a slurry, and add baking soda to this cup, which hiss to indicate that the soil is acidic.

Introduction

Soil pH, also known as "soil reaction". It is an acid-base reaction of a soil solution. It 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; If the pH value is less than 7, it is an acidic reaction; A pH greater than 7 is an alkaline reaction.

The pH of the soil can be measured with a soil pH meter.

How to use: 1. If the soil at the measurement point is too dry or too much fertilizer to measure the pH of the soil, you must first splash water on the location of the measurement point and wait for 28 minutes before measurement.

2. Before using the tester, it is necessary to use an abrasive cloth to wipe and clean the metal absorption plate completely to prevent affecting the measured value. If the new product is not used, there is protective oil on the surface of the metal plate, which must be inserted into the soil several times first, and the protective oil layer must be polished before use.

3. When the pH value is determined, it is directly inserted into the soil of the test point, and the metal plate surface must be all put into the soil, and the correct value is obtained in about 10 minutes. Soil density, humidity and excess fertilizer can all affect the measured values, so they must be measured several times at different locations to find the average.

4. The pH value of the tester is very stable after 10 minutes, and the humidity will be displayed immediately when the white button on the side is pressed.

Measure pH range:

In general, the pH range is 0 14, 0 7 is acidic, from 7 14 is alkaline, and 7 is neutral.

In a few special cases it will involve special, high-range, ultra-acidic, ultra-alkaline. It generally measures a larger range than 0-14, so there will be a range of 0 16.

Alkaline: pH is (above).

Less alkaline: pH (7

Neutral: pH 7

Acidic: pH is below (below).

Less acidic: pH (

How to measure soil pH, today I will hand over to you a simple little method!

The normal soil pH value is less than to greater than that, and the soil pH value that is most suitable for the growth of the plant Yuxin is between to. The soil contains a large number of cracking and defective elements, so the soil should be properly conditioned according to the use target when using, and better results can be obtained.

How long does African swine fever soil survive.

African swine fever soils can survive up to 205 days. The African swine fever virus is a very tenacious virus that can survive for 6 years in a cold blood environment, but can only survive for 10 minutes in high temperatures of 60 degrees.

How carbendazim disinfects soil.

Carbendazim can be sprinkled into the soil at the right time before planting, and then the soil can be prepared, which can play a role in disinfecting the soil. Carbendazim is a broad-spectrum fungicide, which can be sprinkled into the soil to control germs and reduce the incidence of crop disease.

What is suitable for boron-deficient soils?

Boron-deficient soils are suitable for growing flowers. Note that boron-deficient soils are not suitable for growing any crops, because boron deficiency in the soil will cause the pollen in the flowers to be stunted, so that fertilization and fruiting can be debated, while planting flowers does not have to worry about this problem.

Three major technologies of soil remediation technology.

The three major technologies of soil remediation technology are physical method, chemical method and biological method. For example, the guest soil and soil replacement method in the physical method are the method of deep ploughing and soil turning when the pollution is light, and soil replacement is used when the pollution is heavy.

Herbicides in the soil.

After application, brassinin can accelerate the synthesis of amino acids in plants and meet the needs of crop growth, thereby reducing pesticide damage and restoring normal growth of crops.

You can find the specific content on it.

Standard Name: National Standard Soil Environmental Quality Standard of the People's Republic of China.

Standard classification: agricultural soil fertilizer standard.

Promulgation Date: 1995-1-1

Date of implementation: 1996-03-01

Date of abolition: 2018-08-01

Standard Category: GB - National Standard.

Standard number: GB15618-1995<>

Soil pH value is an important physical and chemical parameter of soil, which has an important impact on the availability and fertility of soil trace elements. For example, the availability of soil phosphate is greatest in . pH >, due to the precipitation of calcium phosphate and the < of pH, due to the formation of iron phosphate and aluminum phosphate precipitation, the effectiveness of phosphate is reduced.

The increase in soil acidity increases the solubility of many metal ions in the soil, increasing their effectiveness or toxicity, and the poisoning of plant roots caused by the increase in the solubility of aluminum due to acid rain. Soil pH is either too high (alkaline soil) or too low (acidic soil) is not good for plant growth.

The distribution of soil pH in China is generally high in the north and low in the south, high in the west and low in the east. The pH value measured from 4095 topsoils in China was; median; The range of 95% confidence is: The pH of different bioclimatic zones and different types of soils is different.

First, we understand the pH of the soil. Soil acidity and alkalinity refers to the presence of various chemical and biochemical reactions in the soil, which exhibit different acidity or alkalinity. The strength of soil acidity and alkalinity is often measured by pH.

The reason why soil is acidic and alkaline is because of the presence of a small amount of hydrogen ions and hydroxide ions in the soil. When the concentration of hydrogen ions is greater than the concentration of hydroxide ions, the soil is acidic; on the contrary, it is alkaline; When the two are equal, it is neutral.

Categories: Entertainment & Leisure >> Flowers, birds, fish and insects.

Problem description: What should I do if I want to know the pH value of the soil? What devices and reagents are needed?

Please comrades who really know, thank you.

Analysis: In fact, there is a simple measurement method, and the method is as follows:

1.After the soil was air-dried and sifted, 20 g of soil sample was taken into a 50 ml beaker, 20 ml of reagent water was added to cover the surface glass, and the suspension was continuously stirred for 5 minutes. If there are absorbent soils or other complex substrates such as salts, additional reagent water can be added and the amount of water added can be recorded.

2.The suspension is allowed to sit for about 1 hour to allow most of the solids of the suspension to settle, and if necessary, the aqueous layer is obtained by filtration or centrifugation, and its pH is determined by a pH electrode.

This is one of the standard assays of the Soil Science Society of America, and as long as it is not too acidic or too alkaline, this method is basically the easiest and most convenient.

Follow these steps to measure soil pH:

1. The chemical reagent store bought a special test of pH paper (also known as pH test paper).

2. Then take a little (half a spoon) of the test soil and put it in a container.

3. Mix with Liangkaixiangdong Zen water, and then dip the test paper into the mixed tremor solution.

4. Soon the color of the test strip has changed, and then compare the color with the standard of the test strip, and the value can be read. A value less than 7 is acidic, a value greater than 7 is alkaline, and a value equal to 7 is neutral.

5. The general value is that the soil between is more suitable for planting acid-loving soil plants. The soil with a value of 8 and 5 is suitable for planting alkaline-loving plants. Keep in mind that most flowers prefer acidic soils.