Measures of fertilization and watering of alpine rhododendron
There are many theories about the fertilization of alpine rhododendron. From our practice in recent years, we should change the traditional centralized fertilizer application method in China and replace it with "thin fertilizer application frequently", that is, balanced fertilization for each watering, paying special attention to the ratio of N:P:K in different growth and development stages. Because of its great influence, we should try our best to carefully detect and analyze each watering in order to prepare the most ideal pH value and EC value. We have done a large number of experiments in different growth stages, such as 12 gradients from pH3.8 to 7.1. although it is proved that it has strong adaptability, proper acidity is the guarantee of robust growth. generally, it should be adjusted between 5-6.5. different growth stages have different requirements, and different acidity and alkalinity have a certain effect on flower color. We have also done a large number of experiments with EC values between 1.0 and 3.8. Practice has proved that different growth and development stages have different requirements. Attention should be paid to the frequent application of thin fertilizer, the combination of promotion and control, and careful detection of the chemical composition of water quality. High salt and high calcium are disadvantageous to the growth of alpine rhododendron, so we should try our best to choose the water treated by Rain Water, chemical or semi-permeable membrane technology.
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Fertilization Technology of Cymbidium
Hanging orchid, people call it "flowers in the air", the flowerpot on the balcony, railing, and other potted flowers can be reflected up and down into interest, very beautiful. The hanging orchid is also a natural scavenger, which can remove harmful substances from the air. Some studies have shown that the orchid can absorb more than 80% of the indoor harmful gases and has a strong ability to absorb formaldehyde. The engineer of the Indoor Environment Monitoring Center of China Decoration Association believes that the orchid is one of the most suitable plants to be placed in the room. Cymbidium is a more fertilizer-tolerant foliage plant, if there is not enough fertilizer and water, it is easy to scorch head senescence, leaf yellowing and loss.
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Five key points in applying fertilizer to rhododendron
Cuckoo root is delicate, fertilizer must be cooked before it can be used. It is generally used for retting for more than one year, and the fully fermented fertilizer is more suitable. Fertilization should pay attention to the following five points: look at the seedlings to fertilize. The seedlings can not be fertilized, and the liquid barnyard manure which is well retted and extremely thin can be applied after 4 months. After the plants are set and planted in the next spring, more nitrogen and potassium fertilizer should be applied to accelerate vegetative growth. Phosphate fertilizer should be applied in 2 ~ 3 years of adulthood to make the flower rate high and the flower large and colorful. In old age, more nitrogen fertilizer can be applied to promote the regeneration of branches and leaves and the tree body.
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