How to water orchids with the coming of severe heat

Water is the source of orchid life and the foundation of orchid growth. Watering orchids is the most important link in orchid cultivation and management. The ancients said: "raise orchids a little bit, watering for three years." This is quite reasonable, it shows that watering orchids is a deep knowledge, which can only be mastered through long-term practice and exploration. The accumulation of previous practical experience and the exploration of modern science provide us with a shortcut. Their understanding of the problem of watering orchids is worth studying, thinking and studying. First of all, water is the source of the life of orchids. First of all, water is an important component of the protoplasm of orchids. The water content of the protoplast of orchid plant is generally more than 80%. If the water content decreases, the life activity will be affected. If the protoplasm loses too much water, it will cause the destruction of the protoplast and lead to the death of the plant. Secondly, water is the raw material in the metabolic process of orchid plants. Assimilation and alienation in orchid plants require the participation of water molecules, such as photosynthesis, respiration, hydrolysis and so on. Thirdly, water is the medium of metabolic process of orchid plants. Only when the nutrient elements in the cultivation medium are dissolved in water can they be absorbed by the orchid root system, and various metabolites must be transported to all parts of the orchid plant along with the water. Fourth, water can keep the orchid plant in its inherent shape. Only when there is a large amount of water in the cells of the orchid plant, can the cell expand, the plant stand upright, and it is easy to accept light and gas exchange. Once the orchid plant loses water, it will wilt. Fifth, water can regulate the body temperature of orchid plants. Water not only has high vaporization heat and specific heat, but also has high thermal conductivity, which is beneficial for orchid plants to maintain body temperature and emit heat, and to water orchids. One of its important functions is to regulate the body temperature of orchids. In a word, water is the source of orchid life and the foundation of orchid growth. properly meeting the water needs of orchid plants is the most important condition for orchid growth. 2. Two ways to supply water to orchid plants there are two ways to supply water needed by orchid plants: one is to absorb water from plants through roots and transport it to the whole grass through vascular; the other is to rely on orchid leaves to absorb water from the air to meet the metabolic needs of orchid plants. If you understand this truth, you will know how to supply water to the orchid plant. Third, the methods of watering orchid plants to supply water to the roots of orchid plants are as follows: irrigation, sprinkling (dripping) and soaking. "Irrigation" is to use a kettle to inject water along the edge of the basin. The advantage of this method is that the water will not reach the center of the leaf, but the disadvantage is that the watering speed is slow and it is difficult to water through. It takes repeated irrigation to achieve the effect of watering through. "sprinkle" is to spray water with a spray pot or shower head to wet the whole orchid environment, so that the water seeps from the soil surface to the orchid root and moistens the orchid basin. The advantage of this method is that the water can be watered through the whole orchid basin, but the disadvantage is that the water is easy to splash into the leaf heart, so you should be careful to use it, otherwise you will break your heart. "dipping" is to dip 3/4 of the orchid basin into the water together with the plant material. The advantage is that the water can be soaked, but the disadvantage is that it is easy to spread bacteria and is time-consuming and labor-consuming. Orchid cultivation experts often mix these three methods, and the effect is very ideal. There are two ways to supply water to orchid leaves: spraying and humidifying. "spray" is to spray fine mist with a sprayer, scattered directly on the orchid leaves, so that the orchid leaves are absorbed into the body through stomata. "humidification" is to increase the humidity of the air and let the orchid leaves absorb. There are also several methods of humidification: one is to use a humidifier to remove fog to increase the humidity of the space; the second is to increase the water surface and set up more water basins under the orchid rack to increase the humidity of the space by relying on water volatilization; the third is to artificially simulate rainfall and splash water fog to increase the humidity of the air; in addition, an oxygen pump is also used to help volatilize moisture in the basin, and so on. 4. The water quality of wild orchids watering orchids depends on Rain Water, so the water for cultivation of orchids should be natural and pure, and it is better to be clean and slightly acidic (ρ η value is about 5.5. usually Rain Water is the best, river water is the best, tap water is the second, and well water is not available. There are many fertilizer ingredients in "Rain Water", among which spring rain is especially good, thundershower is better, autumn rain is second, artificial rain is forbidden, and acid rain is harmful. "River water, pond water" is collected by Rain Water, which is beneficial to orchids, but the river water polluted by industrial wastewater is not available. "Tap water" cannot be used if it is taken underground, but it is still Rain Water in nature if it is taken from the river, but after processing by the waterworks, there are disinfection and purification preparations, which are harmful to orchids and cannot be used directly. there are two solutions: one is to fill several cylinders with tap water, expose them in the open air, store them for many days, and use them circularly. Second, put in a small amount of peel, such as orange peel, apple peel, etc., and store it for one or two days before use, which is effective to change the quality of tap water. "well water" belongs to groundwater. First, the temperature is low, sudden watering is disadvantageous to the growth of orchids, and second, it is alkaline. There are more salts of calcium and magnesium in well water. Regular watering is harmful to orchids. Fifth, the timing of watering the orchid plant is "happy and moist but afraid of wet, like dry and afraid of dryness", this ancient saying has a lot of scientific truth. "wet", "moist", "dry" and "dry" are different in different degrees. "wet" is wet, and "wet" is too much water, which will make the orchid root suffocate and rot and die; too dry is dry, and "dry" is too short of water, which will wilt the orchid plant, grow frustrated, and even dry to death; and "dry" and "moist" are moderate moisture, which is the favorite state of orchid growth. In order to understand the key problems of "doing" and "moistening", we must carefully observe and experience in practice, and only by accumulating experience step by step can we really master it. There is no quick solution, and we must make "three years of meritorious service." Generally speaking, when the plant material on the basin is dry but not dry, and the hole at the bottom of the basin is moist but not wet, it is the best time to water the orchid plant. It is not necessary to wait for the basin soil to be completely dry before watering, otherwise it will have an adverse effect on the growth and development of orchids.

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