Du Fu fertilizer pay attention to five points
The rhododendron root is delicate and the fertilizer must be cooked before it can be used. Usually used more than one year in the wolfberry, fully fermented fertilizer is more appropriate. Fertilizer should pay attention to the following five points:
To see seedlings can not be fertilized fertilizer seedlings, 4 months after the start can be used to make a good, very thin liquid manure; the next spring, after planting a fixed planting, should be more nitrogen and potassium fertilizer to speed up the vegetative growth. Two to three years of adult growth should be applied phosphate fertilizer, so that the flower rate is high, flower color. In the old age, more nitrogen fertilizer can be applied to promote the regeneration of the leaves and leaves, rejuvenate the tree, and extend the age of the tree.
Appropriate fertilization begins in early spring from March to March with the application of nitrogen and potassium as the main light fertilizer to promote the sprouting of branches and leaves; from April to May is the period of growth and development, with luxuriant foliage and rapid root growth. Phosphate fertilizer is preferred, and potassium is supplemented. , Every 5 days; Stop the fertilization during the summer heat dormancy period; From August to September in the autumn growth period, apply thin phosphorus and potassium fertilizer once every 10 days; In the early winter, you can apply the base fertilizer such as bean cake once.
The thin roots and the lesser roots of Rhododendron amurensis are as thin as the hair. During the entire growth process, less fertilization is required. If the dosage is high and the concentration is high, not only can it not be absorbed by the root system, but it will also have a reverse osmosis effect, and the cell fluid in the plant will be sucked out, and the root hair will be burned, yellow leaves, stem shoots and even death will occur. In this case, immediately stop the fertilizer, continuously watering, dilute the fertilizer, in order to save.
Use basal fertilizer with caution for 2 to 3 year old azaleas. In the early winter each year, a 3 cm deep ditch along the wall of the basin can be used. Apply a small and light basal fertilizer that mixes livestock manure with bean cake once. Cover the thin soil. Water slowly immersed in the soil. As the fertilizer absorbs sunlight and heat, it generates heat in the evening and it is also conducive to plant growth in the winter.
Fertilizer before the control of water, fertilization after fertilization before the requirements of basin soil dry, otherwise the fertilizer can not be dispersed in the sludge retention, ventilation and permeability is hindered, easy to rot. After fertilization, the next morning can be poured large water, so that the fertilizer fully penetrated and dissolved, which is conducive to plant absorption.
Particularly worth mentioning is Du Fuxi's "green fertilizer and water." The large cylinder or concrete pool can be used to soak leek leaf, green grass, melon skin, orange peel, rapeseed cake, etc., cover plastic film, increase heat through sunlight, and fully ferment and ripen. Then take the supernatant and add 1/5 of green manure to each normal application of fertilizer. Green manure is rich in organic matter and is slightly acidic, and its fertility is moderate. It does not damage the root system and can make the plant grow robustly.
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