Effects of Temperature and Light on Seed Growth of Three Different Plants Seed germination requires appropriate temperature, light intensity and other environmental parameters. The temperature and humidity in the actual environment may not necessarily meet the requirements for seed germination. Therefore, in the laboratory, we often use the seed germination box to germinate seeds, and control the real-time parameters of their growth environment. We will use the corresponding recorders, such as the temperature and humidity self-recording instrument, to measure the temperature and humidity at the same time. The two parameters are measured together to greatly increase the efficiency. The light quantum recorder is an instrument for measuring the light intensity, and the light intensity irritates the seed. Has a very important role, but the main plant seeds studied in this paper are salt grass, fruit worms and Artemisia halodendron. The temperature strongly affects the seed germination rate and germination rate, and the appropriate temperature can promote seed germination and seedling growth. Different plant species, the seed germination temperature optimum. This study showed that under the constant temperature of continuous light, the optimum germination temperature of Saussurea chinensis was 15°C. Under the condition of continuous dark constant temperature, the optimum germination temperature was 20°C, and Artemisia pentaphylla was 20°C; The speed of germination was also different. Saline grass germinated 1~2d after sowing, reached the maximum germination rate 7~8d, and the fruit germination began on the 1st after sowing and reached the maximum germination rate on the 4th day. Germination began and the maximum germination rate was reached 4-7 days. Under natural conditions, there is a change in temperature at day and night, and the effect of temperature change on the seed germination of different species is different. For the air conditioning of natural conditions, we can also use the field microclimate automatic observer. The field microclimate automatic observer can measure up to 12 parameters, including temperature and humidity, illuminance, dew point, soil moisture, and soil temperature. Very comprehensive. There was no significant difference in the germination rate of Saussurea chinensis seeds under continuous dark temperature change and constant temperature, so the constant temperature and temperature change could not significantly affect the germination of Saussurea seeds. The germination rate of the hyphae in the continuous dark environment was compared with the temperature change. The difference was significant, and it was basically lower than that of seed germination under the condition of variable temperature. There was no difference between the time of initial germination and the duration of germination. It was seen that the temperature change was conducive to the germination of the seeds of the fruiting disc. The germination rate of Artemisia wuhanensis under constant temperature and variable temperature was continuous. At higher levels, there was no significant difference in germination initiation time and germination duration, indicating that temperature change had no significant effect on seed germination of Artemisia selengensis. With regard to the mechanism by which temperature change can promote seed germination, it is generally believed that temperature change can promote the activity of enzymes, facilitate the transformation of storage materials, promote the mechanical changes of seed coat and facilitate the permeability of water, thus promoting seed germination. Regular Flange ,Pvc Flange,Weld Neck Flange,Companion Flange CHINA·SNGONG FLANGE MANUFACTURING CO., LTD. , https://www.sngong.com