What happens when the soil on the surface of the ground appears red after watering?

Where are you?

It should have something to do with the soil on your side.

Shandong's. What should I do if the greenhouse soil turns red?

15-08-18 JC Agriculture + Flowers& 41; Collection.

We all know that after planting greenhouses for a period of time, sometimes the soil grows green moss, and then it turns red, which will seriously affect the yield and quality of planted crops in the long run, so when we encounter this situation, how should we deal with it, don't worry, let's take a look at this article.

Let's take a look at a few photos of the soil turning red in the greenhouse.

The redness of the greenhouse soil is manifested in the growth of moss-like things in the soil after watering, and after the soil surface dries, there are crystals mixed with red substances on the soil surface. After consulting the relevant information, the reasons for this phenomenon are mainly concentrated in the following three aspects.

1. Soil acidification: long-term application of chemical fertilizers makes the soil pH between, resulting in soil acidification, iron, manganese and zinc plasma in the soil dissolve and collect the soil surface, and the iron and manganese plasma are oxidized after the soil is dry to form red patches. This soil is acidic.

2. Soil salinization.

The process by which the salt content of the bottom layer of the soil or groundwater rises to the surface with the capillary water, and after the water evaporates, the salt accumulates in the surface soil. This soil is generally alkaline and has a pH.

3. Soil eutrophication.

Soil salt separators collect on the soil surface, making the soil surface nutrients too high and suitable for some algae.

Survival, when the soil surface dries, the algae die, and the algae residue shows a red color.

1. Soil acidification: long-term application of chemical fertilizers makes the soil pH between, resulting in soil acidification, iron, manganese and zinc plasma in the soil dissolve and collect the soil surface, and the iron and manganese plasma are oxidized after the soil is dry to form red patches. This soil is acidic.

2. Soil salinization: the process in which the salt of the bottom layer of the soil or groundwater rises to the surface with the capillary water, and the salt accumulates in the surface soil after the water evaporates. This soil is generally alkaline and has a pH.

3. Soil eutrophication: soil salt separators collect on the soil surface, making the soil surface nutrients too high, suitable for some algae to survive, when the soil surface is dry, the algae die, and the algae residue shows red.

Adjust the pH of the soil, use chemical fertilizers reasonably, and it is recommended to use organic fertilizers.

Biological fertilizer. Too much fertilizer is used.

Too much fertilizer is used.

You measure the pH of the soil.

Your local agricultural technology center.

There are laboratories.

There are three reasons for this phenomenon: 1. In some places, the soil is initially alkaline. After the soil is dried, the iron-manganese plasma oxidizes to produce erythema.

This soil is acidic. 2. The salt at the bottom of the soil or in the groundwater rises to the surface, and after the water evaporates, the salt accumulates in the surface soil. This soil is usually alkaline.

3. The surface of the soil is too nutritious. The reason for this phenomenon is improper management, which leads to the hardening of the soil and impervious to water, resulting in an excessively high concentration of salt on the soil surface and rich in nutrients.

<>1. The eutrophication of soil digging has reached a severe level, and the red algae with strong salinization tolerance have multiplied. The occurrence of red algae is caused by a lack of conservation of soils, especially protected areas, and cannot be solved in the short term.

2. Suggestions: Less application of chemical fertilizers and soybean meal with high nitrogen content, chicken and pig manure, etc., to reduce the content of chemical fertilizers and nitrogen in the soil, and to apply high-carbon cattle and sheep manure and orange fertilizer, and cattle and sheep manure and orange fertilizer are conducive to the rapid reproduction of beneficial microorganisms, plus more microbial agents to consume too much nitrogen and salt in the soil, so that the eutrophicated soil gradually reaches a state of chaotic equilibrium of nutrients and microorganisms, so that soil improvement can achieve the goal, but this requires a process.

May be lacking in alkali and alkaline earth metals and rich in iron and aluminum oxides, with an acidic red color.

The improvement measures include afforestation, land leveling, mixing sand with guest soil, strengthening water conservancy construction, increasing the organic matter content of red soil, scientific fertilization, lime application, and adopting a reasonable planting system. Nitrogen, phosphorus, potassium and other mineral fertilizers can be added, nitrogen fertilizer should be applied in granular or spherical form, and phosphate fertilizer should be mixed with organic fertilizer to make granular fertilizer; Lime was applied to reduce the acidity of red soil; rational farming; Selecting appropriate crops, trees and planting green manure are the key measures to improve red soil.

Green manure can be planted to improve the organic matter content and nitrogen fertility by applying more organic fertilizer, appropriate amount of lime and supplemental phosphate fertilizer, and if the organic matter content is very low. Increasing the application of phosphate fertilizer and lime can generally receive good results.

Soil redness is a source of soil desiliconization and aluminum-rich.

phenomenon. In hot and humid areas, the soil surface material is made up of:

BAI in mineral weathering.

DU forms weak alkaline conditions, and the relative enrichment of iron and aluminum in the soil is caused by the leaching of a large number of soluble salts, alkali metal DAO and alkaline earth metal salt bases.

If it is to be solved, it can be solved by improving soil acidity and alkalinity and applying organic fertilizer.

Suitable for growing neutral and weakly alkaline plants. Such as corn, cabbage, cotton, peas, etc.

If you have any questions, you can answer the monk!

The soil is acidic and reddened after watering.

Soil is acidic, and soil salinization refers to the fact that the soil salt content is too high (exceeding, and making crops low or unable to grow.

There are two conditions for the formation of saline-alkali soil: first, the climate is arid and the groundwater level is high (above the critical water level); The other is low-lying and there is no way to drain the water. Groundwater contains a certain amount of salt, such as its water surface close to the ground, and the ground.

The area is relatively arid, and the water that rises to the surface due to capillary action evaporates, leaving salt: over time, the salt content of the soil gradually increases, forming saline-alkali soil; If it is a depression and there is no drainage outlet, the water in the depression will evaporate, leaving salt and forming a saline-alkali land.