Does organic fertilizer neutralize acidic and alkaline soils, and what effect does it have on acidic

You can apply more organic fertilizers, phosphate fertilizers, so that the soil is alkaline and acidic

One of the immediate effects is that it is not conducive to the growth of crops. Nowadays, planting some crops often requires a pH value in one of the ranges, and if the pH is alkaline, it is definitely not conducive to the growth of crops. Because alkaline land often contains more hydrogen and sodium, it is often very lacking in calcium, so it is difficult to form a good soil structure, which is definitely not conducive to the growth of crops.

If the area chosen to be planted is alkaline, it will often lead to a reduction in yield or difficulty in obtaining a bumper harvest, for farmers, we must understand whether the plot they are planting is suitable for acid and alkalinity, and if it is alkaline, it should be noted. <>

In addition to affecting the growth of crops, it also affects the activity of microorganisms in the soil. The planting of crops more or less requires some microorganisms, but if the alkalinity is too large, the activity of microorganisms will be greatly limited, which will affect the transformation of fertilizer, so as to not be able to give crops first, and there will naturally be yellowing and even cause crops to wither. <>

Another effect is that it is prone to mutation。I think everyone is very clear about mutation, generally speaking, crops that are too acidic, crops that are planted, or areas that are too alkaline, can cause mutations. Briefly describe what variation, for example, this morning glory is generally purple, but if it grows in alkaline, it is possible that this flower will produce white or even other color flowers, which is called variation, which is different from the original crop properties.

Finally, too much alkalinity is easy to produce some toxic and harmful substances, which will directly affect the health of crops and indirectly affect the health of people's consumption. Whether it is a crop grown in too acidic soil or too alkaline, we should pay attention not to eat the crops that are planted, after all, too much alkaline is often easy to contain more calcium carbonate, which has some toxic effects on crops.

The solubility of calcium and magnesium in strongly alkaline soils is low, and the effectiveness is reduced. Not conducive to the growth and development of crops. Generally, crops are more suitable for growth in neutral or near-neutral soils, and there are alkalized soils with more sodium carbonate, which are more toxic to crops.

There is also an impact on the growth of crop roots by soil pH.

One is to reduce the availability of soil nutrients. Second, it is not conducive to the benign development of soil and destroys soil structure. The third is the activity of soil microorganisms.

Fourth, it is not conducive to the growth and development of crops. Generally, crops are best grown on neutral or near-neutral soils. Fifth, it is easy to produce various toxic substances.

Compost soil is slightly acidic, not suitable for planting flowers directly, and should be mixed with other soils appropriately.

It is made of dead branches, fallen leaves, grass, fruit peel, dung, hairy bones, internal organs, etc. as raw materials, plus the old soil, furnace ash, and garden soil are layered and laid, and then piled up, and then watered human and animal manure on the top, and finally covered with garden soil around and above.

Assay method. The strength of soil acidity and alkalinity is often measured by pH.

to measure. Soil pH is expressed in terms of pH. To determine the pH value of the soil, the electrode method or litmus paper colorimetric method is mostly used. The electrode method is fast and accurate in determining the pH value of soil, but it is rarely used at present.

The colorimetric method of litmus paper to determine the pH value of soil is a simple method. Determination of soil, seedbed and nutrient soil.

pH, you can first take a sample of soil, put it in the bottom of the bowl, and then add distilled water.

part, stir fully with a glass rod for 1 minute, wait for Qiyou to Qiyou Gaocha to be static and clear, soak a section of test paper into the clear liquid, the test paper will change color, and immediately use the discolored test paper and the pH standard color card.

By making a comparison, you can directly get the pH value of the sail.

Most compound fertilizers are alkaline, and a few are acidic. Compound fertilizer is a chemical fertilizer made of two or more nutrients, and the general raw material contains sodium nitrate.

Calcium nitrate is an alkaline fertilizer, and the raw material contains ammonium sulfate.

Ammonium chloride and the like are acid fertilizers.

Compound fertilizers are divided into physiological acidic fertilizers and physiological alkaline fertilizers. Due to the unequal number of anions and cations in the chemical nitrogen fertilizer absorbed by crops, when the absorption of cations is more than anions.

Fertilizers that acidify the soil are called physiological acid fertilizers.

Generally speaking, acidic soils should be alkaline or physiological alkaline fertilizers, such as sodium nitrate, calcium nitrate, etc. If there is no choice, attention should be paid to the application of organic fertilizer or lime to reduce the effects of acidification.

Alkaline soil should be selected physiological acid fertilizers, such as ammonium sulfate, ammonium chloride, etc. For saline land.

Although there is no problem of soil acidification, ammonium chloride and sodium nitrate should not be applied to avoid the harm caused by excessive chloride and sodium ions.

The key to soil acidity and alkalinity lies in the amount of strong acids and alkalis in the soil. Acidic substances come from the carbonic acid generated by carbon dioxide dissolved water and the organic matter formed by the dissolution of soil organic matter and the strong oxidants caused by chemical action, as well as acidic substances added by fertilizer; Alkaline substances mainly come from potassium carbonate, sodium bicarbonate, calcium bicarbonate and other salts in the soil. Because of the difference between the weather in the south and the north of China, the southern region is humid and rainy, and the soil is mostly acidic, while the northern region has less drought and rainfall, and the soil is mostly alkaline.

It is suitable for the growth of different grain crops to increase the yield of the soil, and the general regulations are neutral, slightly acidic or slightly alkaline reaction, and the pH value is mostly in the middle of 6-8. Because soluble phosphorus is easily combined with iron and aluminum in acidic soils, iron phosphate and aluminum are produced and the effectiveness is reduced. The exchangeable potassium, calcium, magnesium, etc. in the soil are easily replaced by hydroxide and will be lost once it encounters precipitation.

Acidic soils are also often deficient in sulphur and molybdenum. Lime powder should be added to acidic soil to neutralize the soil acid value, remove the harm of aluminum, and improve the timeliness of nutrients. At the same time, pay attention to the topdressing of organic chemical fertilizers, according to the regulating effect of organic chemical fertilizers, to alleviate the harm of acidity to soil and crops.

Organic chemical fertilizers should use alkaline fertilizers such as sodium hydroxide, ammonium carbonate, calcium, magnesium and phosphate fertilizers.

In alkaline soils, especially lime and silty soils, soluble phosphorus is easily fused with calcium and converted into insoluble phosphatate, which will reduce the effectiveness of phosphorus. In lime and silty soils, the effectiveness of many nutrients such as boron, manganese, molybdenum, zinc, and iron will be greatly reduced, causing crops to often feel that this trace element is not enough, and produce various physiological pests and diseases. Therefore, it should be highly valued and purposefully used as base fertilizer or top dressing.

Micro-fertilizer and organic fertilizer can be carried out for a certain period of time to improve the timeliness of micro-fertilizer. When the micro-fertilizer is not enough to grow and produce the deficiency disease, the corresponding organic chemical chelating Hefei should be immediately sprayed to alleviate the impact level of the disease.

It is good to apply phosphate fertilizer, ammonium sulfate, ammonium chloride and other acidic and physical acidic fertilizers on lime silty soil, which can reduce and alleviate the damage of soil alkalinity. It can also be moderately applied to plaster, industrial waste residue, aluminum sulfate, sublimated sulfur, acid weathered bed coal, etc., but do not apply alkaline fertilizers, such as sodium hydroxide, potassium nitrate, grass ash, etc., especially taboo the use of strong alkaline fertilizer lime powder. In addition, ammonium chloride fertilizer is not suitable for application on saline-alkali land, and attention should be paid to ammonium nitrogen fertilizer to be filled in the ditch to avoid ammonia evaporation damage.

Phosphorus and potassium fertilizers can be applied intensively or mixed with farm fertilizers and fertilizers to reduce the fixation of phosphorus and improve the use rate of fertilizers.

1. It is not conducive to the benign development of soil and destroys soil structure 2. Inhibits the activity of soil microorganisms, thereby affecting the transformation of nitrogen and other nutrients and ** 3. After the soluble salt in alkaline soil reaches a certain amount, it will directly affect the germination and normal growth of crops.

The impact is particularly severe, which will lead to the destruction of the soil structure, which will cause many organisms in the soil to not meet the corresponding standards, and may also lead to reduced crop yields, or it may lead to root rot, which will also lead to reduced crop yields.

The availability of soil nutrients is reduced, and the solubility of calcium and magnesium in strongly alkaline soil is low, and the availability is reduced. Trace elements such as boron, manganese, and copper are greatly reduced in alkaline soils.

It is not conducive to the benign development of the soil and destroys the soil structure. Strong alkaline soil has more hydrogen and sodium, and calcium is lacking, which makes it difficult to form a good soil structure, which is not conducive to crop growth.

Adverse to the activity of soil microorganisms. The pH of soil microorganisms is generally more suitable than in the neutral range. Too much alkaline severely inhibits the activity of soil microorganisms, thus affecting the conversion of nitrogen and other nutrients.

Different plants have different needs for soil acidity and alkalinity, and organic fertilizer is very beneficial to improving the soil and improving the pH value of the soil, and is also conducive to the growth of crops and the utilization rate of chemical fertilizers.

1. Long-term application of organic fertilizer to acidic soil will generally increase soil pH.

2. The use of organic fertilizer can reduce the pH of alkaline soil and increase the pH of acidic soil to balance soil pH.

3. The use of organic fertilizer is very beneficial to improving the soil, and is also conducive to the growth of crops, and can improve the utilization rate of chemical fertilizer.

Effect of soil acidity and alkalinity on plant growth:

1. The growth of various plants has its own suitable soil acidity and alkalinity, most plants are difficult to grow normally under PH conditions, rhododendron, bilberry, camellia, fir, pine and other plants like acidic soil, and tamarix, jujube, wolfberry, etc. like saline-alkali soil, field crops are more suitable for neutral soil.

2. Underground pests often require a certain range of pH environmental conditions, such as bamboo locusts like acid, and scarab likes alkali.

3. Some diseases can only occur within a certain pH range, such as cataplexy is often prone to occur on alkaline and Qinghao cautious neutral soils.

4. The exchangeable aluminum adsorbed on the soil colloid and the aluminum ions in the soil solution are an important ecological factor, which has a significant impact on the distribution, growth and succession of natural vegetation. In strongly acidic soils, there is a lot of aluminum, and plants living on such soils tend to tolerate aluminum or even like aluminum (such as broom orchid, tea tree, etc.); But for some plants, such as clover and alfalfa, aluminum is toxic and growth is inhibited when the soil is rich in aluminum. Studies have shown that aluminum poisoning is an important cause of the decline of land fertility in plantations.

5. Within the normal range, the reason why plants are sensitive to soil acidity and alkalinity is that the soil pH value affects the concentration of various ions in the soil solution, thereby affecting the effectiveness of various elements on plants.

6. The effect of soil acidity and alkalinity on the availability of nutrients. The high effectiveness of nitrogen at pH is due to the fact that when the pH value is less than that, the activity of nitrogen-fixing bacteria decreases, and when the pH value is greater than 8, nitrification is inhibited. The effectiveness of phosphorus is higher at pH value, but when the pH value is less, iron phosphate and aluminum phosphate are easy to form, so the effectiveness is reduced. High reputation in pH value is easy to form calcium dihydrogen phosphate; Acidic soils have a strong leaching effect, and potassium, calcium, and magnesium are easily lost, resulting in a deficiency of these elements.

When the pH value is higher, the soil sodium ions increase, and the calcium and magnesium ions are replaced to form carbonate precipitation, so the availability of calcium and magnesium is higher in the pH in acidic soil because of solubility. Molybdate is insoluble in acid but soluble in alkali, and is easily deficient in acidic soil; Borate is more effective at the time.

Soil texture is very closely related to the growth of plants, and excessive acidity or alkalinity of the soil will affect the root growth of plants to a certain extent, thus affecting the normal growth and development of plants. Therefore, it is of great significance to study the relationship between soil acidity and alkalinity and plants, accelerate soil improvement, and cultivate soil fertility.

<>1. The sour mountain soil improvement method requires alkaline fertilizer, and slaked lime is commonly used.

2. Because the main component of slaked lime is calcium hydroxide, which is an alkaline substance, it will be neutralized with acidic substances after being sprinkled in acidic soil, and the pH value in the soil will change after combing acid-alkali neutralization (thereby removing the acidic substances in the soil).

1. The acidic soil improvement method requires alkaline fertilizer, and slaked lime is commonly used.

2. Because the main component of slaked lime is calcium hydroxide, which is an alkaline substance, it will react with acid-base neutralization with acidic substances after being sprinkled in acidic soil, and the pH value in the soil will change after acid-base neutralization (so as to remove the acidic substances in the soil).