The influence of plants on air humidity, and what are the effects of air humidity on plants

Question: What gases do plants emit when they are not photosynthesized?

Hypothesis: Carbon dioxide.

Utensils: Glass bottle, purple litmus, a plant.

Experiment: Place a glass bottle capped on a plant in a dark chamber and brush a layer (purple litmus) inside the bottle, leaving the bottle unsealed and leaving a small hole (oxygen).

Result: Purple litmus became cloudy.

Conclusion: Due to the absence of photosynthesis, plants emit carbon dioxide, which makes purple litmus cloudy.

Impact: Plants emit oxygen during photosynthesis and carbon dioxide when they are not photosynthesized, so plants circulate air.

Air humidity has a great impact on the growth and development of plants, which is often ignored, but it is not known that excessive air humidity is easy to make branches and leaves grow, petals rot, flower drops, and easy to cause diseases and insects such as oak spread. Excessive humidity during the flowering period hinders flowering and affects fruit setting; If the air humidity is too low, the flowering period will be shortened and the flower color will be lighter.

If the air is dry for a long time, it will grow poorly, affecting flowering and fruiting, which is one of the reasons why southern flowers cannot be raised well in the northern region. The climate in the north is dry in winter, and if indoor flowers are not often kept at a certain humidity, some moist flowers often appear to be pale yellow next to the leaf slag branches, and the leaf edges are dry.

According to the different requirements of different flowers for air humidity, methods such as spraying branches and leaves or covering plastic film can be used to increase air humidity and create humidity conditions suitable for their growth. Orchids, begonias, monstera and other moisture-loving flowers require the relative humidity of the air to be not less than 80%; Jasmine, white orchid, hibiscus and other medium-humid flowers, the air humidity is required to be not less than 60%.

1. Humidity affects transpiration, transpiration is not only the power of water absorption, but also the power of mineral nutrient transportation, the air humidity is large, the transpiration is weak, the ability of plants to transport mineral nutrients is reduced, transpiration can also adjust the temperature of the leaf car, if the temperature is high, the air humidity is large, the transpiration is weak, the leaves may be burned, the effect on transpiration will indirectly affect the dry and wet alternation of the potting soil, which is not conducive to fertilizer and water management, thereby affecting plant growth;

2. If the humidity is too low for a long time, it will cause necrosis of the edge of the leaf and the tip of the leaf, mainly because the water pressure in the internal air cavity of the leaf is too different from the external water pressure, resulting in insufficient water vapor inside the leaf and necrosis;

3. The size of humidity affects the opening and closing of plant stomata, too much or too small humidity will lead to the closure of stomata and the closure of plant stomata will be closed, carbon dioxide can not enter mesophyll cells, and photosynthesis will slow down or even stop;

4. Too much humidity is conducive to the reproduction of pathogens, the germination of most fungal spores and the development of fungus digging need high humidity, which is too low to facilitate the occurrence of insect pests, such as the occurrence of mites such as red spiders are generally in a high temperature and low humidity environment.

The four plants that have the effect of increasing humidity are Fugui bamboo, spider plant, ivy and bamboo, and the plants should be watered every two days when planting Fugui bamboo. Spider plant has high temperature requirements, and it is best to control the temperature at 15 to 25 degrees when planting; When planting ivy, let the plants receive plenty of light; When planting bamboo, it is necessary to fertilize the plants properly.

Four plants that increase humidity1. Fugui bamboo

Fugui bamboo, also known as longevity bamboo, Kaiyun bamboo, belongs to the agave family, is one of the plants that increase humidity, Fugui bamboo is native to the Gali Islands, suitable for growing in a high temperature, humid environment. Fugui bamboo has a high demand for water during the growth process, and the plants should be watered every two days when planting.

2. Spider plant

Spider plant, also known as hanging orchid, air guard, native to South Africa, suitable for growing in a warm, humid, semi-shady environment, high temperature requirements, it is best to control the temperature at 15 25 degrees when planting. The spider plant grows rapidly, and the branches should be pruned regularly when planting to prevent the plant from growing up.

3. Ivy

Ivy is also a plant that can increase humidity, ivy belongs to the perennial climbing shrub of the family Pentaceae, which can grow up to 20m, ivy has higher requirements for soil, and it is best to choose loose, fertile and permeable soil when planting. When planting ivy, it is important to let the plants receive light and shade.

4. Wenzhu

Bamboo, also known as cloud bamboo, chicken down mushroom, belongs to the asparagus family, likes to grow in a warm, moist, semi-shaded environment, not tolerant to drought, when planting to water the plant in time, in case the plant is dry due to lack of water. The demand for fertilizer is not high, but it needs to be properly fertilized and supplemented with nutrients when planting.