Effects of changes in carbon dioxide concentrations on crop cultivation in agricultural greenhouses
The basic elements of green plant growth are carbon dioxide and water. Under light conditions, plants photosynthesize carbohydrates and release oxygen through chloroplasts. According to relevant measurements, each gram of organic matter synthesized by plants needs to absorb 1.6 grams of carbon dioxide, which is 40 times more than other substances. Ninety percent of the dry matter accumulated by plants comes from photosynthetic products. One acre of crops uses the equivalent of 80,000 to 120,000 cubic meters of carbon dioxide in the air, showing the importance of carbon dioxide to plants.
Because carbon dioxide is a colorless, odorless gas, it is often overlooked when it is invisible or invisible in the air, especially for crops grown in Agricultural greenhouse. For greenhouse crops, if it is winter, in order to keep warm, the doors and Windows should be closed to make it airtight. After the sun comes out, due to the enhanced photosynthesis of crops, the concentration of carbon dioxide in the Agricultural greenhouse drops rapidly, and fresh air cannot enter the outside world. When the concentration of carbon dioxide in the Agricultural greenhouse is reduced to about 100PPm, although there is sufficient sunlight and the water absorbed by the plant roots is not enough, there is insufficient carbon dioxide, and the plants cannot carry out photosynthesis, resulting in carbon dioxide "hunger", which affects normal growth, yield and quality.
When the carbon dioxide content is insufficient, the plants will be in a "hungry" state, which will have a great impact on the growth and development of crops. Leaf color is often dull and plant growth is poor. Flowers and fruits also fall off easily. Malformed fruit is plentiful and of reduced quality. Negative effects, such as lower yields. Excessive carbon dioxide concentration is easy to cause leaf curl, affect the normal progress of photosynthesis, affect the absorption of oxygen by crops, and hinder normal respiration and metabolism.
Therefore, the addition of carbon dioxide in greenhouse cultivation also plays an important role in modern smart greenhouses, which can help growers obtain better crop performance, more dry matter synthesis, longer shelf life, better fruit taste and so on. The results are excellent.
