How to reduce plant transpiration and what are the factors that affect plant transpiration?

First, you can reduce the ambient temperature, because if the temperature is high, it will increase transpiration.

Second: reduce the air circulation around the plant, each plant will form a layer of air with a relatively high water content around it to reduce transpiration, and the fast air circulation means that the plant has to constantly replenish the water content of the surrounding air.

Third: increase the moisture content of the air around the plant, for reasons such as two.

Fourth: make the plant in a state of water shortage, so that the physiological functions of the plant will protect the water in the body, close the stomata, and lose less water, which will affect the normal growth of the plant, and it is not recommended to use it.

Cut off part of the leaves of the plant.

Because the transpiration of plants is due to the fact that when the stomata on the leaves are engaged in respiration (just like human breathing, inhaling oxygen and exhaling carbon dioxide), the stomata will open, and when the oxygen flows out, the water will also be lost and released into the air. When a part of the leaf is cut off, the number of stomata of the leaf is reduced, and the natural transpiration is reduced.

The ambient temperature can be lowered, because transpiration is related to respiration, and lowering the temperature will reduce respiration, which in turn will reduce transpiration! In addition, it is possible to reduce light and more!

Reduction of transpiration area; (2) improve the plant ecological environment; (3) Application of anti-transpiration agent. If there is excessive transpiration, the plant is prone to wilting.

Cover, dripping water do not expose to the sun.

Minus a large number of leaves and put them in the shade.

Plant transpiration is mainly due to stomatal transpiration, which is significantly regulated by factors such as light, temperature and CO2.

Light is the main regulator of stomatal movement. There are two kinds of effects of light promoting stomatal opening, one is the indirect effect that occurs through photosynthesis; The other is a direct effect that occurs when a light signal is sensed by a photoreceptor.

The effect of light on transpiration is first to cause the opening of the stomata and reduce the internal resistance, thereby enhancing transpiration. Secondly, light can increase the temperature of the atmosphere and the leaves, increase the vapor pressure difference between the inside and outside of the leaves, and accelerate the transpiration rate.

Temperature Stomatal movement is a physiological process related to enzymatic reactions, so temperature has a great influence on the rate of transpiration. When the atmospheric temperature increases, the leaf temperature is 2 10 higher than the air temperature, therefore, the increase of the vapor pressure in the cavity under the stomata is greater than the increase of the air vapor pressure, so that the vapor pressure difference between the inside and outside of the leaf increases, and the transpiration is strengthened. When the temperature is too high, the leaves lose too much water and the stomata close, thus weakening transpiration.

CO2 has a strong effect on stomatal movement, with low concentrations of CO2 promoting stomatal opening, and high concentrations of CO2 causing the stomata to close rapidly (both in light and in the dark). At high concentrations of CO2, the possible causes of stomatal closure are:

High concentrations of CO2 increase plasma membrane permeability, leading to K+ leakage, eliminating solute potential gradients inside and outside the plasma membrane.

CO2 acidifies the cell, affecting the establishment of transmembrane proton concentration differences. Therefore, high CO2 concentrations inhibit stomatal transpiration.

Measures that can be taken to reduce plant transpiration include reducing the transpiration area.

Artificially increase air humidity.

Shade. , reduce wind speed, etc. Hope.

Some chemicals can be applied artificially as follows.

Reduced opening--aba atrazine phenylmercuryacetic acid; Reflective - kaolin; Reduces foliar moisture – silicone latex; Formation of a thin film - cetanone;

where - metabotropic antitranspirants; &Thin-film anti-transpiration agent; - Reflective anti-transpiration agent;

Lighting

Light can increase the transpiration of plants. Light increases the leaf temperature, accelerates the evaporation of mesophyll water, and increases the vapor pressure in the intercellular space and the cavity under the stomata of the mesophyll. The sunlight increases the atmospheric temperature and decreases the relative humidity, which increases the vapor pressure difference between the inside and outside of the leaf and the temperature difference between the leaf and the atmosphere. The light opens the stomata and reduces the impedance of transpiration.

Atmospheric humidity

The greater the relative humidity of the atmosphere, the smaller the vapor pressure difference between the inside and outside of the leaf, and the weaker the transpiration intensity. The relative humidity of the normal leaf stomatal cavity is about 91, and when the atmospheric relative humidity is 40 48, transpiration can be carried out smoothly. The weather is dry, and transpiration is strengthened due to the increase of vapor pressure difference between the inside and outside of the leaf.

Temperature

When the soil temperature increases, it is conducive to the root system to absorb water and promote transpiration. When the temperature rises, the free energy of water increases, the diffusion rate of water molecules accelerates, and the transpiration rate of plants accelerates. Therefore, the temperature increases and transpiration intensifies within a certain range.

Wind

The breeze promotes transpiration because the wind can blow away the water vapor outside the stomata and supplement some water vapor with low relative humidity, which reduces the diffusion resistance inside and outside the leaf and strengthens transpiration. Strong winds cause the stomata to close and the leaf temperature to drop, which in turn weakens transpiration.

Transpiration is affected by a combination of many environmental factors. The changes of crops in one day are: after sunrise in the early morning, the temperature increases, the atmospheric humidity decreases, and the transpiration is enhanced, generally reaching the peak around 2 o'clock in the afternoon, and after 2 o'clock, due to the gradual weakening of light, the water in the plant body decreases, the stomata are gradually closed, the transpiration decreases, and the transpiration decreases to the lowest point after sunset.

1. Dermal pore transpiration: The corpore transpiration of woody plants through the cracks of the cork tissue of the branch is called epipore transpiration. 2. The transpiration of the stratum corneum through the stratum corneum of leaves and stems of herbaceous plants is called stratum corneum transpiration. 3. Stomatal transpiration through stomatal transpiration is called stomatal transpiration, and stomatal transpiration is the most important way of plant transpiration.

Transpiration is the process by which water is lost from the surface of living plants into the atmosphere in a state of water vapor.

Transpiration is mainly carried out through leaves, but petioles and young stems can also undergo a small amount of transpiration. Unlike the evaporation process in physics, transpiration is not only affected by external environmental conditions, but also regulated and controlled by the plants themselves, so it is a complex physiological process.

Stomata are small pores in the epidermal tissue of plant leaves, which are generally composed of pairs of guard cells. The guard cells are surrounded by epidermal cells, and if the adjacent epidermal cells are morphologically identical to other epidermal cells, they are called adjacent cells, and if there is a significant difference, they are called paraguard cells, and the guard cells form a stomatal complex with neighboring cells or paraguard cells.

Mode of transpiration

The transpiration of woody plants through the cracks in the bark pores of branches and cork tissues is called cutaneous transpiration. However, the amount of canopy transpiration is very small, accounting for about the total canopy transpiration. Transpiration through the cuticle of leaves and herbaceous stems, called cuticle transpiration, accounts for about 5% to 10% of transpiration.

The cutaneous transpiration of young leaves can reach 1 3 to 1 2 of the total transpiration.

Transpiration through the stomata is called stomatal transpiration, and stomatal transpiration is the most important way of transpiration in plants. Stomata are important gateways for in and out of the body of plants. Water vapor (H2O), carbon dioxide (CO), and oxygen (O2) all share the stomata channel, and the opening and closing of the stomata will affect the physiological processes of plants such as transpiration, photosynthesis, and respiration.