The effect of carbon dioxide on the growth of strawberry and the determination method of carbon dioxide concentration
In greenhouse strawberry planting, most people pay attention to the changes of air temperature and humidity and soil temperature and humidity in the greenhouse, but often ignore the influence of carbon dioxide in the greenhouse on the growth of strawberries. In fact, the concentration of carbon dioxide affects the important factors in the growth process of strawberries. Energy conversion process - photosynthesis, so the scientific measurement of carbon dioxide concentration in the greenhouse, and reasonable greenhouse ventilation, etc., are conducive to increasing the production and efficiency of strawberries. There is a very simple method for measuring the concentration of carbon dioxide in the greenhouse, that is to use Carbon dioxide detector.
Generally speaking, the concentration of carbon dioxide in the air is very low, only 200-300 microliters per liter. In the greenhouse, because it is in a closed environment, the change of carbon dioxide concentration is more obvious than that of land cultivation. Using a carbon dioxide detector to measure and study, it is found that the concentration of carbon dioxide in the greenhouse is different within a day, and the greenhouse is closed at 6 p.m. Afterwards, the carbon dioxide concentration in the shed gradually increased, and reached the highest level before sunrise, rising to 500 microliters/liter; more than an hour after sunrise, the carbon dioxide concentration gradually decreased, and dropped to 100 microliters/liter at 9 am. , the concentration of carbon dioxide in the shed has picked up, but it is still below 300 microliters/liter.
The low concentration of carbon dioxide in the greenhouse is not conducive to the growth and development of strawberries, especially the normal photosynthesis of strawberries. Properly increasing the concentration of carbon dioxide in the greenhouse can make the leaves of strawberries thicker, dark green in color, larger in size and mature in advance , Increase production by 15% to 20%. Therefore, in order to obtain a good harvest and high yield, the measurement of carbon dioxide concentration in the strawberry greenhouse has also begun to become a formal and necessary measurement item. The carbon dioxide detector is used to detect the carbon dioxide concentration in the strawberry greenhouse, which is simple and efficient. It can better apply the detection data for scientific research, and can also guide the planting management of the greenhouse and create suitable environmental conditions for the growth of strawberries in the greenhouse.
