How to treat the water quality when watering azaleas
When watering azaleas, you should pay special attention to the water quality. It is best to use natural Rain Water for water, because natural Rain Water does not contain drugs and impurities such as bleach. The second is river water and pond water, and the third is tap water. Tap water is purified soft water, which contains bleaching powder, liquid chlorine, alum and other chemicals. If this kind of water is used for a long time, it will gradually increase the alkalinity in the basin soil, which is not conducive to the growth of azaleas. Therefore, the water quality must be treated before use. The treatment is to acidify it. Water with neutral or alkaline water quality should be prepared into acidic water. The usual method is to acidify water with ferrous sulfate (green alum) and edible vinegar. If the water quality is too alkaline, ferrous sulfate and edible vinegar can be used together, and the specific dosage can be prepared according to the pH value of water, ferrous sulfate and vinegar. The simple method is to irrigate an aqueous solution containing 0.1%-0.5% ferrous sulfate for a long time, or sprinkle a little ferrous sulfate on the basin surface for 10-15 days. An aqueous solution containing 0.5%-1% vinegar can also be irrigated once in 10-15 days. Watering can also use tap water and well water after drying treatment. Drying water can reduce the harm of harmful ions in tap water, increase the water temperature of well water, eliminate the temperature difference between water and basin soil, and facilitate root absorption. 0.15% ferrous sulfate is also added when using tap water. When watering, it is more beneficial if it can be irrigated alternately with mature fertilizer liquid water. Because the common use of these two kinds of water can not only maintain a certain acidity of the basin soil, but also provide certain nutrients, which is suitable for the growth of azaleas.
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Families raise azaleas well.
Rhododendron is a perennial woody plant, like cool and humid climate, like semi-shady sun exposure, like fat avoid thick fertilizer, suitable for growing in permeable slightly acidic sealed soil. So azaleas grow most vigorously at about 20 ℃; stop growing at more than 30 ℃ and stay dormant; if they are on the job, they will not freeze to death. But I am afraid of a sudden attack by the cold wind. Therefore, azaleas should be kept away from the heating and stove indoors, receive plenty of sunshine in winter, shade in summer, and be placed on a well-ventilated north balcony (or outside the north window). Watering, like other flowers, is wet.
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Control of rhododendron mosaic spot
The symptoms mainly infected the leaves. In the early stage of the disease, small reddish-brown spots appeared on the leaves, which gradually expanded into disease spots or irregular polygonal spots, dark brown. In the later stage, the central tissue of the lesion turned gray. When the disease is serious, the disease spots are connected to each other, resulting in withered and yellow leaves and early fall. Prevention and control methods 1. The fallen leaves were removed and treated in autumn, and the diseased leaves were removed in time during the growing season. two。 The planting or potted flowers should have a suitable density, ensure the ventilation and light of the plants, reduce the leaf humidity, and put the potted flowers in the outdoor shade shed in summer to reduce sunburn and machine.
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