Do all plants need alum water

Not. Alum fertilizer (ferrous sulfate) can provide crops with the nutrients needed for growth, and can also regulate the process of plant redox, promote better absorption of nutrients by crops, reduce the pH value of the soil, improve the pH of the soil, and also prevent and control yellowing and rice fever. 2. Contraindications for use:

The concentration should not be too high, the number of uses should not be too frequent, and it should be diluted with water before use.

1. The efficacy, function and contraindications of alum fertilizer.

1. Efficacy and function.

1) Alum fertilizer (ferrous sulfate) can provide crops with the nutrients they need during the growth process.

2) It can not only enhance the absorption capacity of crops for nitrogen, phosphorus and other elements, but also regulate the process of plant redox, so that they can better absorb various nutrients.

3) It can prevent and control yellowing, rice fever, green loss, anthracnose and other diseases.

4) Because alum fertilizer is acidic, it can neutralize the alkalinity in the soil and reduce the pH value of the soil, thereby improving the pH of the soil and making the crops grow better.

2. Contraindications for use:

1) The concentration should not be too high, nor should it be used frequently, because it may cause the seedlings to burn, or produce other ***.

2) When not in use, it needs to be sealed, if it has been exposed to the air for a long time, it will affect the effect of subsequent use.

3) When using, it needs to be diluted with water before use, and the fertilizer cannot be directly sprinkled on the crop, which will cause the root system to be unable to absorb iron.

4) Alum should not be used in crops that like alkaline soil, such as moon flowers, lilacs, forsythia flowers, crape myrtle flowers, acacia flowers, and ash flowers.

Second, what crops are alum fertilizers suitable for.

1. What crops are suitable?

Alum fertilizer is suitable for spider plant, white orchid, magnolia, azalea, camellia, osmanthus, smiling, cycad, jasmine, iron tree, rhododendron, camellia, violet, coleus grass, hyacinth and other crops.

2. How to use.

1) Generally, 5-7g of alum can be used for each pot of flowers and diluted with water to control the concentration.

2) Usually use it once every 20 days or so, and avoid direct sunlight after using alum fertilizer.

3) When used, it can be mixed with organic fertilizer, which can improve the utilization rate of fertilizer.

Not all plants need alum water, black sails regulate the pH of the water. Acid-loving plants need alum water. Alkaline-loving plants do not need to.

The molecular formula of black alum is Fes04, a divalent sulfate of iron, also known as ferrous sulfate, containing trace elements such as iron and sulfur.

Scientific name: ferrous sulfate Synonyms: green alum, iron alum Molecular formula: Feso4·7H2O Molecular weight:

Properties: green monoclinic or orthorhombic crystal. Soluble in water, insoluble in alcohol.

Odorless. Specific gravity. When the temperature rises to 90, it loses 6 crystals of water, and at 300, it loses all the crystalline water, and becomes a white anhydrous.

It absorbs moisture in moist air and is oxidized by the air to a yellowish-brown or rust-colored color. It can be weathered in dry air, and the surface becomes white powder, and then oxidized by the air to become yellow-brown or rust-colored. Usage:

In agriculture, it mainly treats smut in wheat and scab in apples and pears. The chemical industry is mainly used to manufacture pigments such as iron oxide red and hualan. It is used as a blood tonic in medical treatment, and is used as a water purification agent for tap water.

It has a certain anti-disease sterilization effect, no.

Summary. Ferrous sulfate fertilizer is also known as alum. The preparation of ferrous sulfate solution fertilizer should be ready for use.

It is necessary to reasonably control the application rate of ferrous sulfate solution fertilizer. Because the absorption of elements by plants is limited, if excessive watering and fertilization, it will make its iron ions excessive, cause plant poisoning, and make the rhizomes of plants become black ash and rot, so the amount of fertilization is ferrous sulfate to 5 grams to 7 grams per pot, watering or spraying is appropriate.

How to use black alum well?

Ferrous sulfate fertilizer is also known as alum. The preparation of the sail cover of ferrous sulfate solution fertilizer should be ready for use. It is necessary to reasonably control the application rate of ferrous sulfur-tardonic acid solution.

Because the absorption of elements by plants is limited, if excessive watering and fertilization, it will make its iron ions excessive, causing plant poisoning, so that the rhizomes of plants become black ash and rot, so the amount of fertilization is ferrous sulfate to 5 grams to 7 grams per pot, watering or spraying is appropriate.

Can you still add black alum after planting potatoes?

Can be added. Is it better to plant potatoes and eggplants first or add them later?

Generally, it is put after planting.

Is it dissolved in water before watering?

Yes. Thank you.

You are welcome.

The molecular formula of black alum is Fes04, a divalent sulfate of iron, also known as ferrous sulfate, containing trace elements such as iron and sulfur.

Uses: In agriculture, it is mainly used to treat smut in wheat and scab in apples and pears. The chemical industry is mainly used to manufacture pigments such as iron oxide red and hualan.

It is used as a blood tonic in medical treatment, and is used as a water purification agent for tap water. It has a certain anti-disease and sterilization effect, and has no insecticidal effect.