The soils in the northern regions are generally alkaline and do not meet the requirements for the cultivation of acidic soil plants in southern China such as rhododendrons, camellia, gardenia, and jasmine. Here are some small methods for improving soil quality:
1. Alum and alum are called white peony. The white peony is dissolved in water and made into a 1-2% solution. It is applied to loose humus-rich fertilizer-containing soil, and it is watered once every half a month, which is beneficial to the growth of camellia and rhododendron.
2, ferrous sulfate ferrous sulfate commonly known as green wolfberry, with 0.2-0.5% of ferrous sulfate solution, watered once every half or so, for hi acidic flowers, such as gardenia yellow leaves, the application is particularly effective, There are obvious effects on the acid and flowers in the south.
3. Sulphur powder method Sulfur is a massive crystal, which can be researched and made into fine powder. Typically in soil with a diameter of 30 cm pots, add 1-2 grams. Sulphur powder is hardly soluble in water, so its effectiveness is slow and its duration is long.
4. Orange peel method After the fresh orange peel is soaked in water, the PH value of the fresh orange peel is less than 5, and there is a fertilizer effect. When the orange peel is used, it is diluted with water, and the pH value is tested to an appropriate degree.
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