The method of changing Phalaenopsis pot
The substrate for planting Phalaenopsis requires good drainage and slightly water conservation, as well as ventilation and ventilation. Commonly used are tree fern root, water moss, bark, charcoal, coconut capsid and ceramsite and so on. No matter what kind of substrate you use, when the Phalaenopsis plant is too large and the air roots wind around each other, it is necessary to change the basin. The basin change should be carried out in the summer of the growing period, the method is to pour out the plant, remove the old cultivation substrate, cut off the aging and rotten air roots, and then put a layer of charcoal on the bottom of the new basin, put in the plant, fill in the new substrate, and compact and drench it. Generally speaking, the time to change the basin should depend on the cultivation substrate, such as water moss as a plant material for 1 ~ 2 years will rot, when the rot secretes extremely acidic substances, directly hurt the air root, at this time, if you do not change the basin in time, it will lead to root rot. Therefore, the pot should be changed once in 1 ~ 2 years with water moss or bark as substrate, once every 2 or 3 years with tree fern root or coconut shell, and it will not be a problem for those planted with ceramsite or charcoal to change pot for 3 ~ 5 years, but fertilizer should be applied more and less to make up for the lack of nutrients in these substrates.
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Prevention and control of several diseases of Phalaenopsis
Anthrax occurs seriously in high temperature and humidity, forming brown-black round spots and gradually expanding outward. The occurrence of the disease can be controlled by uniform spraying with 800 times of Prike solution, once every 5 days, for 3 consecutive times. The symptoms of soft rot are leaf base rot, corm rot and mildew bacterial smell. Methods of prevention and treatment: agricultural streptomycin sulfate was sprayed at the initial stage of the disease, once every 7 days, for a total of 2 times. The symptoms of Sclerotinia sclerotiorum first occur from the base of the leaf, and the spot is light brown, watery, rotten, and can be extended to the whole.
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Phalaenopsis changing pots
1. Selection of basin: generally choose plain fired pottery basin or plastic basin, porous basin is better, shallow basin is suitable for breathability, basin height is better than basin diameter. 2. Selection of culture medium: Phalaenopsis is a typical epiphytic orchid, its root system is well developed, and the cultivation substrate must have the characteristics of looseness, ventilation, good air permeability and rot resistance. According to the author's cultivation experience, pine needles, peanut shells and bark shreds should be selected as substrates for Phalaenopsis cultivation in the north. The basin must be changed every year. If the pot is not changed in time, the rot of the pot substrate will cause shrinkage and poor air permeability.
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