The optimum growth temperature, humidity and illuminance of vegetables
The alpine seaweed, commonly known as seaweed, black cabbage, algal seaweed is cheap and rich in resources. It contains a lot of essential amino acids, minerals and vitamins, and it is a highly nutritious and health food. In the process of cultivation of Porphyra haitanensis, the use of filamentous cell engineering to raise seedlings can shorten the time for raising seedlings, save manpower and material resources consumed during seedling raising, thereby increasing efficiency and realizing industrialization. However, each parameter in the environment will It induces the variation of the filamentous cells and thus affects the relative performance of the laver. In this paper, the optimal temperature, humidity, and light intensity of the laver were determined through the use of a temperature and humidity self-recording instrument and a temperature illuminance recorder in order to obtain the most growth of the laver. Good temperature, humidity, and illuminance parameters.
Through the temperature and humidity self-recording device to understand the temperature of the laver Haitan between 7 ~ 29 °C, the growth of free filaments with temperature changes show a certain rule. When the temperature was in the range of 7-21°C, the daily average growth rate and weight gain of free filaments increased with increasing temperature; at 21°C, the daily average growth rate of free filaments reached the highest value. 5.52% / d, weight gain ratio also reached the highest value of 18.00. In general, free filaments grow fastest at 19~23°C, and this temperature range is suitable for growth temperature. Above 23°C, the color of the free body is yellow, showing poor growth phenomenon. When the temperature exceeds 29°C, the free filaments stop growing, and the phycoerythrin disappears and becomes brownish yellow. The temperature rises above 30°C. The free filaments Poor growth, even death. Therefore, it can be considered that about 29 °C is the high limit of free filament growth. Temperature and humidity self-recording instrument has the function of temperature and humidity measurement. It has the function of simultaneous detection of 32 channels and can realize multi-point synchronous detection. In addition, the temperature and humidity self-recording machine can freely set the working mode, there are three modes for reference, manual mode, automatic mode and computer lock mode, which greatly provides the flexibility of the use of the instrument.
Temperature illuminance recorder is used to show the effect of light intensity on vegetables. According to the measured data, when the light irradiance is 20μEm-2S-1, the growth rate of free filaments is the largest, greater than the change point or less than this point, their growth rate has a certain impact, so The light intensity can be controlled at this point in the growing procedure. The difference in light intensity will change the color of free filaments. In the process of cultivation, you can judge whether the light intensity exceeds the standard by looking at the changes in its color.
In addition, in meteorological testing, we often use a carbon dioxide detector to detect the effect of changes in carbon dioxide levels on vegetables. These factors are all parameters that affect the environment. In reality, we need to consider comprehensively to determine which factors have a greater impact on the plant in order to allow the plant to grow in the most suitable environment.
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