What is suitable for growing plants in acidic soil?

The normal growth and development of plants depends on a good soil environment. However, in nature, there are often various obstacles to the soil in which plants grow, which restricts plant growth. For example, large areas of the world's land surface have high concentrations of salt; There is a high concentration of H+ in acidic soils

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2+ and Fe2+, etc.; Excessive amounts of reducing substances and Fe2 in flooded soils; Calcareous soils lack sufficient available phosphorus, iron, and zinc. These soils with factors that hinder plant growth are called stress soils. Stress soils are widely distributed and difficult to improve, so they have become a limiting factor for the development of agricultural production.

Plants have developed a certain adaptability to various adversities in the long-term evolutionary process. Some plants are able to tolerate the aforementioned adverse conditions to a certain extent. Understanding the physiological response and stress resistance mechanism of plants to the soil environment is very important for the development of agricultural production.

Acidic soil is a general term for low pH soils, including red soil, yellow soil, brick red soil, red soil and podzol soil. The acidic soil area has abundant precipitation, strong leaching, low saturation of salt base, and high acidity. Acidic soils are widely distributed around the world and occupy an important position in agricultural production.

Plants can grow in weakly acidic soils, and the rain itself is weakly acidic, which is conducive to the dissolution of inorganic salts in the soil. If the acidity is too strong, too many inorganic salts are dissolved, and the concentration is large, which will cause root cells to lose water and die. Plants cannot grow in alkaline soil.

What should I do if the soil is acidic? Lao Yang teaches you to use plant ash to change soil acidity!

1. Alkaline plants.

The soils in the south are mostly acidic, while those in the north are mostly alkaline. In fact, most plants do not like alkaline soil, but some plants can still grow well under alkaline soil. For example, common cacti, oleander, pomegranate, wisteria, wolfberry, pear tree, jujube tree, weeping willow and so on.

2. Acidic plants.

There are many kinds of plants that prefer acidic soil, such as camellia, red maple, Milan, white orchid, hydrangea, begonia, cherry blossom, five-needle pine, podocarpus, gardenia, smile, osmanthus, jasmine, and so on. Among them, osmanthus is an evergreen shrub or tree, usually about 3-5 meters high.

Soils with good acid-loving properties and rich in nutrients should be exposed to more sunlight and watered with water-soluble fertilizer for fertile leaves, so that the growth will be more vigorous.

The adaptability of soil pH of flowers and trees is explored through long-term cultivation, especially according to the native environment soil conditions of a certain flower and the species of associated plants, its adaptability to acid and alkali should be judged. The vast majority of ornamental flowers prefer acidic to slightly acidic soil conditions, while some flowers are suitable for neutral or slightly alkaline conditions. The common acid-loving flower species include rhododendron, camellia, camellia, red maple, white orchid, Milan, gardenia, pearl orchid, begonia, begonia, dove tree, goldenrod tea, potted orange, cherry blossom, five-needle pine, podocarpus, and most foliage plants; There are not many alkaline-loving flowers, and the flowers and trees with a certain ability to resist salinity mainly include pomegranate, elm leaf plum, oleander, forsythia, woody fragrance, wolfberry, hibiscus, seaside hibiscus, wisteria, spring, lilac, pear, acacia, paulownia, fig, tamarix, black pine, apricot, pear, yueji, cypress, cypress, arborvitae, torch tree, etc.

The most common method to distinguish the acidity and alkalinity of soil is pH assay. The soil is mixed with cool boiled water in a ratio of 1 to 2, the soil solution is poured out in a glassware after precipitation, a piece of commonly used pH test paper is torn off, immersed in the soil leachate to be measured, taken out after half a second, and compared with the standard version, the pH test value can be read. To put it simply, a pH of 7 is neutral, less than 7 is acidic, and more than 7 is alkaline.

According to the pH of soil in China, it is divided into five grades, the pH value is acidic soil, if its value is to, it is alkaline soil; If the pH value is to, it is acidic soil; If the pH value is less than that, it is a strong acidic soil, and if the pH value is greater than it, it is a strong alkaline soil.

Question: I'm in the Northeast, there is a piece of land that is alkaline, and I have been putting it for several years, and I don't know what to plant.

Answer: Flower 1 who loves alkaline soilYueji flower Yueji is a long-term sunshine plant, so many flower friends like to raise the moon season, Huahua is also recommended that conditional flower friends can be exposed to raise, and the moon season in the condition of poor ventilation conditions, it is easy to give birth to aphids and other insect pests, after the occurrence of insect pests, it is necessary to regularly sprinkle small white medicine to remove insects, and at the same time pay more attention to observation.

2.In addition to the alkaline soil, it is best to use clay pots when potting, which can enhance the drainage of the soil, because lilacs are very afraid of waterlogging, and the amount of watering should be controlled. There are also many flower friends in the Northeast who say that there is no problem with lilacs being raised outdoors in winter, and it can be said that they are very suitable for planting flowers in the northern region.

3.Acacia flowers are very resistant to the barrenness of the soil, and the shadow of acacia flowers can be seen in many places where the soil is not fertile, but acacia flowers are not very able to withstand dust, and the places with serious environmental pollution are not good, and they should not be pruned often, because its reproductive ability is not strong, and the root system is very shallow.

4.Wisteria flowers are also a common flower in the north, when it blooms, it will hang down like a purple waterfall, especially beautiful, in fact, wisteria flowers are very adaptable to the environment, they just grow not too vigorously in acidic soil, but almost all regions of the country can breed wisteria flowers, and it is very tolerant of temperature.

Question: I don't want to plant flowers.

Answer: Alkaline soil is suitable for growing pomegranates, oleanders, figs, acacias, cloves, spring flowers, etc. Alkaline soil is suitable for growing figs, pomegranates, jujube trees, pear trees. Alkaline soil can be grown with many crops, rice, cotton, rape, figs, etc.

According to the alkalinity of the strength: 1Strong alkaline:

Grapes, tea, wine, kelp, citrus, persimmons, cucumbers, carrots. 2.Medium alkaline:

Soybeans, tomatoes, bananas, strawberries, egg whites, prunes, lemons, spinach, etc. 3.Weakly alkaline:

Red beans, apples, cabbage, tofu, cabbage, rape, pears, potatoes.

You can refer to it!

Most plants are suitable for neutral acidic soils. A few can also grow in alkaline soils. Arborvitae, for example, can grow in slightly alkaline soils. Reeds prefer alkaline. aqui te amo。

Alkaline soil means that plants include grazing, cypress, licorice, pepper, dwarf, etc., and if these plants grow a lot, this is alkaline soil.

Acidic soil is a general term for soil below the pH value, mainly including yellow soil, red soil, brick red soil, red soil, red soil, etc., the precipitation of sour soil is very sufficient, and the leaching is very strong, its salt base saturation is relatively low, and the acidity is very high. The use of acidic soils in the world is very extensive, mainly used in agricultural growth, and it also occupies a very important position.

1.Flowers and trees suitable for planting in acidic soil include gardenias, ferns, hydrangeas, coleus grasses, rhododendrons, orchids, purple duck plantes and other flowers and trees.

2.The flowers and trees suitable for planting in weakly acidic soil include jasmine, five-needle pine, palmaceae, begonia, primrose, cyclamen, camellia, top red, Milan, camellia, lily, gladiolus, large rock paulownia, white orchid and other flowers and plants.

3.Suitable for neutral and slightly acidic flowers and plants include chrysanthemum, hyacinth, four seasons primrose, asparagus, upside-down Admiralty, purple magnolia, junzi orchid, bamboo, osmanthus, taro, begonia and other flowers and plants.

4.Vegetables and plants suitable for growing in acidic soils are watermelons, berry plants, strawberries, potatoes, sweet potatoes, turnips, marigolds, lilies, rhododendrons, oaks, cedars, heather, oaks, hemp, and many more.

The acidic soil is suitable for growing peanuts, potatoes, turnips, sweet potatoes, watermelons, strawberries, rhododendrons, gardenias, camellias, potatoes, lilies, heather, marigolds, honeysuckle, cedars, oaks, asparagus, upside-down Admiralty, magnolias, junzi orchids, etc.

Answer: Acidic soils are suitable for growing peanuts, potatoes, turnips, sweet potatoes, watermelons, berry plants (such as strawberries, etc.), hemp, rhododendrons, lilies, heather, marigolds, honeysuckle, cedars, oaks, etc.

Ask what saline soil is suitable for planting.

How to improve saline-alkali soil.

Answer: Salix is one of the fast-growing tree species in sandy and alkaline land. It is resistant to water and moisture, suitable for propagation by cuttings, and suitable for growing on mildly sulfate soil. It can be planted on both sides of the river channel and saline-alkali depression in the waterlogged and alkaline area, and should be used as a pioneer tree species, a sand dune front retaining forest belt and a charcoal forest, and it is also a good tree species for farmland shelterbelts.

Weeping willow, also known as water willow, likes wetlands and watersides, is moderately tolerant to salinity, and can be used as an important shelterbelt tree species in saline-alkali land. Propagation by cuttings or burying dry. Akuna Tsubaki grows quickly and reproduces easily.

It should be selected as a pioneer tree species for afforestation in the early stage of saline-alkali land, and can be revetted and windproofed, and can be planted on both sides of the channel and on both sides of the road on higher ground. Neem Neem is second only to Robinia pseudoacacia in salt tolerance, and can grow on dry and thin saline-alkali land, with few insect pests, fast growth and strong germination.

The first is to change the soil, and it is recommended to use sand mixing to change soil, and add 300 400 cubic meters per mu of land. The second is to apply farmhouse fertilizer, more than 2,000 kilograms per mu, and apply it year after year to improve the soil and fertilize the soil. Try not to use chemical fertilizers, when it is necessary to use chemical fertilizers, acidic fertilizers, such as ammonium sulfate, potassium sulfate, superphosphate, etc. to neutralize alkalinity, and potassium chloride should not be applied, because it will aggravate alkalinity.

The third is to plant alkali-tolerant crops, such as hemp, sunflower, sorghum, pasture, etc.

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, and vice versa, it is alkaline, and when the two are equal, it is neutral.

In 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, and affects the effectiveness of various elements to plants.

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.