The influence of Light supply of planting National Orchid

Light is the driving force of carbon assimilation in orchid plants. Guolan leaves absorb the radiation energy emitted from Dayang to produce photosynthetic reaction, and then reduce the carbon dioxide absorbed from the atmosphere to produce a fixed reaction to produce high-energy carbohydrates, which are stored in the somatic cells of Guolan plants. and the energy is released by respiration in the form of oxidative decomposition. For the national orchid to maintain its own life and reproduction of the next generation needs or use.

Under the suitable illumination of national orchid growth, the photosynthesis of national orchid itself increased in direct proportion with the plant growth state. The stronger the growth potential of the orchid plant is, the stronger the tissue parts such as roots and leaves are, and the higher the photosynthetic ability is, the more abundant nutrients are produced for the growth and division of each tissue part of the orchid plant, and the growth rate of the new orchid plant is also relatively improved. Similarly, the stem and leaf content is more abundant, the plant potential is more powerful and aesthetic, the root coefficient is more thick, the meristem germination ability will not be limited. The growth of the orchid root is also due to the sufficient nutrient content in the orchid plant, which can not only supply itself and the stems and leaves to continue to grow, but also provide enough for the growth and development of the root population.

Under the condition that the leaves absorb enough light, the growth of Langen is very exuberant and thick, and it absorbs a lot of water and nutrients to supply the growth of stems and leaves. When the light supply exceeds the critical point needed for the growth of the national orchid, that is, when the light intensity is too strong and large, the chlorophyll of the leaves is easily damaged by strong light, that is, the leaf edge and tip will be scorched on the leaf tissue, and the leaf surface albino will be decomposed by chlorophyll.

When the light intensity is strong, the evapotranspiration of the leaf surface will be strong. In order to regulate the leaf temperature, the root tissue takes away a large amount of water in the leaf due to the evapotranspiration of the leaf surface. In order to support its plant in order to maintain its living condition, it is necessary to absorb more water from the medium and atmosphere, so as to prevent the Guolan plant from withering due to excessive light and rapid evapotranspiration rate, resulting in the loss of balance of water absorption and withering.

In general, the supply of light is large, and the intensity is above its critical point, and the leaves of the orchid plants that grow in the environment for a long time are vulnerable to strong light, photosynthesis and photosynthesis will decrease, and the effects of evapotranspiration and nutrient consumption will also be increased. The water in the orchid body and medium will also be lost quickly and lack of water. Leaf tissue produces less nutrients, which is only enough to support life, and can no longer provide nutrients for the elongation and division of new leaves, buds and roots.

Moreover, under strong light, the temperature will be accompanied by the increase of the evaporation rate of the leaves, and a large amount of water will be lost in the orchid body. The water absorption of the root system was also stopped because of the high temperature. When the balance of water supply and demand was out of balance, the root elongation and the growth and development of stems and leaves were easily limited.

In the season of strong light and high temperature in summer, when the Guolan plant receives more solar radiation energy, the orchid plant has fast and more water evapotranspiration because of strong light and high temperature. In order to supply sufficient water to the orchid plant and avoid the withering of the orchid plant due to lack of water, the cultivation manager will supply a large amount of water for many times, resulting in the acidification of the medium. In addition, due to the leaching of water, some nutrient elements were lost, the growth environment of orchid root changed suddenly, the action capacity of root tissue stopped, and water absorption was related to evapotranspiration. At this time, the root activity is lost, the leaf productivity is out of balance, the leaf tip is easy to scorch, and the root system is easy to stop acting and rot, which seriously affects its quality and yield.

Therefore, in the season of strong light and warm temperature, cultivation managers should pay more attention to whether the supply of light is appropriate. When the intensity of sunlight on the orchid plant has exceeded the critical point of its growth, we should try to install shielding facilities to reduce its radiation intensity and appropriate installation force. A wet machine to increase the humidity in the air. It is beneficial to the growth of orchid plant.

On the contrary, the supply of nutrients produced by photosynthesis will be insufficient to supply the growth and development of national orchid which has been growing in the environment of insufficient light supply for a long time. The necessary nutrients for root elongation can not be obtained from the orchid plant for its root development, and the root growth and elongation ability will be obviously hindered. And in the case of insufficient light, the amount of evapotranspiration of the plant decreases, the surface evaporation of the orchid basin medium will also be reduced, and the relative orchid root absorbs water and the necessary nutrient elements for growth are also reduced. At this time, if the cultivation managers supply too much water, the water can easily occupy the pores in the orchid basin medium for a long time, the ability of oxygen diffusion is blocked, the fresh air can not enter the gas exchange from the outside, and the anaerobic microorganisms are easy to breed. Methane and some odors affect root growth. Therefore, if the national orchid grows under the lack of light for a long time, the root development must be small, and the root growth rate is also very slow.

Due to the limitation of insufficient light, the growth of orchid plant is soft and narrow, the content is less, the plant potential is poor, the flowering rate is poor, the anthocyanin accumulation is insufficient, so the flower color is not bright and the germination rate is low. The new buds will not be very thick, and the number of leaves can not provide a large amount of nutrients due to the decrease of photosynthetic capacity, which indirectly affects the quality and yield of national orchid.

In the season of insufficient light exposure, in order to promote the growth of national orchid and improve its quality and yield, cultivation managers should install plant growth lamps to supplement its thermal energy. now there are high-efficiency plant growth lamps on the market and have been aimed at the plant physiology of national orchid. Research and development into a variety of different functions, readers can make favorable choices according to their needs. And apply potash fertilizer to help its photosynthesis to produce the energy necessary for growth. So that the national orchid can produce more nutrients, root growth and new bud growth will be sufficient demand, so that your orchid plant can grow quickly and evenly.