How to cultivate orchids in the northern region so that orchids bloom more than dumb flowers should start from the following aspects. First, the key to success is to use the pot to cultivate blue. The use of orchid pots for raising orchids is appropriate, because of its good drainage and ventilation performance, and the purple sand basin is permeable, poor in air permeability, and it is easy to rot and poor flowering. Use appropriate mud tile basins, make 10 to 12 holes with a diameter of 1 cm in the wall of the basin, increase the hole at the bottom of the basin, and add more pieces of broken tiles or charcoal blocks to increase the permeability and permeability. Second, watering and watering orchid watering should master the principle of "can not be dry in summer and autumn, winter and spring is not wet". The northern part is mostly neutral water, and the long-term pouring is alkaline. Therefore, orchids are best watered with rain or snow, and hard water or alkaline water containing too much minerals is not available. In addition to keeping the soil moist, orchids should be raised to increase the humidity of the environment. During the summer growth period, water should be sprayed on the surface of the pot or the ground, and the relative humidity should be kept between 45% and 65%, but the humidity should not be too large to avoid causing diseases. Drying in the winter and spring in the northern regions must not be allowed to dry. The spraying of water can be stopped in the autumn, and the basin soil should not be dry. Third, fertilization on orchids is very particular about fertilization, cultivation of orchids rarely use basal, most of the top-dressing liquid fertilizer, during the growth period of 5 to 10 days topdressing a thin rotten liquid fertilizer. Summer and winter are not top-dressing, fertilization before and after flowering. The general principle is to master the principle of "suitable to be diligent and light and avoid sudden and thick". In addition, fertilization should be done in the evening or when there is no wind and no rain, the next morning, once treated with suitable temperature water, spray the foliage. Fourth, suitable shading orchids are semi-negative plants, but the lunar does not bloom or less flowering, and the degree of shade tolerance varies from species to species, with strong resistance to orchids, followed by Jianlan, and the orchids require sufficient illumination. Fifth, pest prevention and control grasp the principle of prevention and treatment. During the rainy season, it is prone to develop white bugs, which can be prevented by Bordeaux or thiophanate. When scale insects occur, dimethoate and other agents can be used to prevent and control them.
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