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How to adjust the light intensity, temperature and carbon dioxide in the greenhouse?

Release date:2021-05-06 15:09:57 The number of clicks:49
Summary:Greenhouse is with the continuous development of modern science and technology, greenhouse breeding and planting are the needs of modern agriculture, but also bring earth-shaking changes to agriculture.

Shed the biggest advantage is the greenhouse environment can be set free, such as temperature, humidity, light, carbon dioxide, and so on parameters, are controlled by human, intensity of illumination in the greenhouse environment, of course, we also should use temperature recorder, carbon dioxide detector, and recording temperature and humidity meter to record in time the inside of the environment, temperature, humidity, carbon dioxide, and light.


Photosynthetically active radiation is the energy source for plant life activities, organic matter synthesis and yield formation. Green plants use light to synthesize organic matter to provide energy for plant growth and to store energy. Light intensity can be measured using a temperature-illuminance recorder. The intensity of light can affect the photosynthesis of plants. In agriculture, the photosynthesis of crops can be improved by increasing or decreasing the intensity of light appropriately. After measuring the intensity of light in the environment by using temperature illuminance recorder, what is the intensity of light used when increasing the intensity of light? The unit of illumination is lumens per square meter (lm), also known as lux: 1Lux=1Lm/m2. Generally, unit capacity method or point by point method is used for calculation. The unit capacity calculation method is suitable for uniform general lighting calculation and is often used in the process of project design. The general civil construction and the life fully facility and the environment reflection condition better small production room, can use this method to calculate, the production workshop can use this method to estimate. Let w be the installation power per unit area. When the area of the illuminated surface is SM2, the total installation power is: P= w ×S (w). In greenhouses, fluorescent lamps without reflectors are usually used to increase the brightness.


In addition, temperature control can be achieved by using a self-recording thermohygrometer. There are many ways to control greenhouse temperature, such as by adjusting the thickness of the canopy covering to be controlled, such as with two film clip a mat, double film double mat and other measures; The use of "double shed system", that is, in the greenhouse and add a small arch shed, arch shed with black plastic film, better effect; And the use of furnace heating methods; But before the temperature control must first measure the greenhouse temperature, and then make a certain adjustment. In addition, we are also often used in agriculture in the normal time recorder wind speed monitor. Wind direction and wind speed monitor is used to determine the wind direction and wind speed, in the meteorological detection is often used.


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