Potassium permanganate soil disinfection method
The editor will explain the topic of flower care knowledge, the method of potassium permanganate soil disinfection. Let's take a look together.
When growing flowers, we usually carry out sterilization and disinfection. The most commonly used is potassium permanganate. Some flower friends ask about the potassium permanganate soil disinfection method, which is actually very simple. More often than not, we need to understand some precautions.
Generally, for soil disinfection, use 0.05%-0.1%, diluted to a light purple color, and soak the pot after planting the plant (watering is also possible). When preparing the aqueous solution, use cool boiled water, as hot water will cause it to decompose and become ineffective. The prepared aqueous solution can usually only be stored for about two hours (sunlight will accelerate its失效), and when the solution turns into a brownish-purple color, it loses its disinfecting effect, so it's best to mix it as needed.
Even for plants that have already been potted, this method can be used. Use an ultra-low concentration, adding a little to the water, and when the solution shows a light red color, it can be poured into the flower pot. However, do not spray it on the young leaves and stems.
Let's talk about some common knowledge about using potassium permanganate.
The bactericidal power of potassium permanganate can increase with the concentration. At 0.1%, it can kill the majority of bacterial propagules, and a 2%-5% solution can kill bacterial spores within 24 hours. A deep purple solution (about 0.3% concentration) has strong oxidizing properties and strong bactericidal ability, which can be used for disinfecting pots and utensils. A rose-red solution (about 0.01% concentration) can be used to disinfect plants contaminated with bacteria, and plants soaked in this concentration of solution for 5 minutes can be disinfected.
When using potassium permanganate, if it accidentally gets on your hands, it will leave a purple stain that is not easy to wash off. Here's a small tip: buy the cheapest vitamin C at the pharmacy, about 100 tablets for 1 dollar, and rub it on the stained area with a little water, and it will disappear instantly. The principle is simple: potassium permanganate is a strong oxidizing agent, while vitamin C is a strong reducing agent, so vitamin C can easily remove the purple stain of potassium permanganate.
The above [] introduces the related content of potassium permanganate soil disinfection method, hoping it will be helpful to you!