We generally think that the north is mainly alkaline soil, the south is acid soil, so how to define the soil is acid or alkali?
1. PH test
More scientific is to use pH (PH) value to judge, test paper placed in the soil solution for 10 seconds, take out the color card to compare the color, the color value is less than 6.5 is partial acid, the value is more than 7.5 is partial alkali
2. General classification
According to our common sense, the darker and softer soil is acid soil.
Alkaline soil is dry, white and hard. There are generally three types: calcareous soil, saline soil and alkaline soil.
I don't know whether the flowers in my family like acid or alkali. It's very dangerous to use soil blindly and change soil. If it's light, it's underdeveloped. If it's heavy, it's dead immediately.
Generally, flowers like weak acid soil. Only slightly acidic soil can grow healthily. There are also alkali resistant flowers, even if soil alkali can grow well
Acid loving: Rose, gardenia, jasmine, hydrangea, Aglaia odorata, camellia, brandy, azalea, Begonia, kumquat, pine, etc.
Alkali resistance: pomegranate, woodiness, hibiscus, wisteria, wolfberry, oleander, Prunus triloba, Jasminum, lilac, etc.
If the soil around you is too acid and alkali, it is also accompanied by water acid and alkali. Even if you buy professional flower soil, it will become unsuitable soil if you keep it. Don't worry at this time. We can adjust the acid and alkali of soil artificially
1. Sprinkle lime to neutralize acidity.
The soil acidity of Guangzhou, Guangxi or other southern mountainous areas is too strong. In addition, the current environmental pollution is relatively serious. Some areas have strong acidity, so we can't plant flowers at all!
Flower friends can refer to the practice of the agriculture and forestry department, sprinkle lime in the soil, sprinkle a pot of soil about a handful of mix is enough, that is, insecticidal sterilization and neutralization of acid
2. Filter with water to reduce the acidity.
Add water to the acid soil, pour out water after settling for half a day, and then add water repeatedly "wash" for 2-3 times, which can reduce the acidity of the soil.
3. Plant ash, neutralize acid
Plant ash is also an alkaline flower fertilizer, which can neutralize the acidity of the soil, sterilize and nourish the flowers.
Fleshy, green, rose like weak acid, not strong acid, flower soil can be mixed with grass ash (not too much, easy to burn roots), is a very good alkaline fertilizer
1. Mixed with rotten leaf soil to improve the acidity.
In the north, Huayou's home is full of alkaline soil. You can mix some withered leaves, pine needles, etc. It's better to rot them first and then use them. They're more delicate, and flowers are easy to take root.
Rotten leaf soil is a very nutritious acid fertilizer. The ancient poem says that "falling red is not a ruthless thing, turning into spring mud to protect flowers"
2. Mix the manure to improve the acidity.
Alkaline soil can also be mixed with manure, whether it's poultry or livestock manure, or even earthworm manure.
Pay attention not to add too much, generally 2 gallon flowerpot mixed with 2-3 handfuls of dung can be, too much easy to burn roots
3. Add chemical particles to rapidly de alkalize
There are professional sulfuric acid powder, ferric sulfate and aluminum sulfate on the market. Flower friends can directly add them to the alkaline soil according to the instructions, which can quickly change the alkalinity of the soil.
Especially Hydrangea and rose, which are sensitive to soil acid and alkali, can quickly change the color of flowers.
Hydrangea will turn blue in acid and pink in alkali. You can control its color according to your preference.
