What are the functional characteristics and use effects of the carbon dioxide detector?
Different plants have different requirements for carbon dioxide under different climatic conditions. If the CO2 concentration exceeds the limit, crop production will decrease instead. Therefore, the device should monitor and control the CO2 concentration in the air to make it reach the optimum value. At present, the existing carbon dioxide detectors at home and abroad are expensive and not suitable for farmers in our country. For this reason, it is proposed to develop a cheap carbon dioxide detector as soon as possible to solve the urgent need of vegetable production.
More than 95% of crop yield comes from photosynthesis. That is, plants use sunlight to synthesize carbon dioxide and water into carbohydrates. But the CO2 content in the air is too low. Only 3Oppm. Therefore, increasing the application of CO2 fertilizer in greenhouses or plastic gardens can greatly increase the yield of vegetables. The main features of the successfully developed new carbon dioxide detector are low price (only a few hundred yuan), high precision, AC and DC dual-use, convenient pull type, low power consumption (power saving), and simple operation. It is very suitable for rural areas.
According to the demonstration results of carbon dioxide detectors all over the country in the past two years, the effect of increasing vegetable production is obvious. Compared with the control greenhouse, the yield per mu increased by an average of 20%. For example, in 1995, Rongtian used a carbon dioxide detector to monitor and control CO2 gas fertilizer in the greenhouses and plastic greenhouses in the suburbs of Changchun City, Jilin Province. The yield of cucumber per mu increased by more than 1,500 kilograms. Every year, plastic greenhouses harvest at least two crops of vegetables, and greenhouses harvest at least four crops of vegetables. This can increase income by several thousand yuan. There are at least 10 million greenhouses and plastic plants all over the country to grow vegetables, which will increase the production of tens of billions of jin of vegetables every year, and the social benefits will be significant.
The stronger the sunlight and the higher the humidity, the stronger the photosynthesis of plants, and the more CO2 gas is needed. Therefore, the carbon dioxide detector is used to analyze that when the sun is strong at noon on a sunny day, the temperature in the plastic greenhouse is high. More CO2 gas fertilizer should be applied, and the concentration should be controlled between 1000-1500ppm. In the morning or afternoon, when the sunlight is weak and the temperature inside the plant is low, less carbon dioxide gas fertilizer should be applied, and the concentration should be between 500-800ppm. Cloudy or rainy days, no sunlight. Carbon dioxide gas fertilizer should not be applied.
