The same seeds, why some can germinate, and some can not germinate? What are the factors that affect seed germination? First, the seed's own viability: Different kinds of plants have different germination difficulties. At present, there are many seeds on the market, and some are very particular about packaging. At the time of purchase, whether it is domestic seeds or imported seeds, please pay attention to the production date and shelf life indicated on the packaging bag. Do not buy seeds that do not have a production date and shelf life. Because most of the expired seeds have lost their vitality, they will not sprout. Second, moisture: During seed germination, storage of nutrients stored in the cotyledon or endosperm and the progress of cell division require water. Seeds can only germinate if they are able to carry out various biochemical changes and physiological activities only by sucking enough water, so sowing must be carried out under conditions of a certain humidity in the soil. Third, the temperature: the appropriate temperature is a necessary condition for normal life activities, the seeds must germinate at the appropriate temperature, the temperature is too high or too low will inhibit the germination of the seed, which can not germinate normally. IV. Oxygen: When the seeds germinate, they have stronger oxygen absorption and more oxygen. The lack of oxygen will inhibit seed respiration and prevent seed germination. According to the characteristics of seeds in production, the seeding depth should be determined according to soil moisture and soil structure to ensure seed germination and emergence. After the seeds absorb enough water, only the oxygen is sufficient, and the nutrients stored in the embryo and endosperm can produce intermediate products and energy through the respiration to meet the germination requirements. 5. The effect of light on the germination of plant seeds: Viable seeds cannot be normally germinated due to inappropriate light conditions. This phenomenon is called photo-dormant. Seeds with light dormancy characteristics are light sensitive seeds. In general, seeds that are shortened or released from sleep due to the presence of light are called hi-light or light-seeking seeds; conversely, seeds that promote or induce hibernation due to the presence of light are known as light-tolerant or dark-seeded seeds; Seeds, with or without light, can germinate smoothly and are light-insensitive seeds. To date, the seeds of Hibiscus have been found to include: most of the seeds of Lonzophora, such as European mistletoe, seeds of Gesneriaceae, seeds of many epiphytes and gramineous grasses, seeds of evening primrose and willow leaf, and so on. Lythrum seed. In addition to the light seed species, there are several species of the genus Vagina, as well as the seeds of the genus Tetranychida, some seeds of the genus Nigra, allium genus, and most seeds of the family Liliaceae. Light-insensitive seeds include many cultivated plants such as cereal seeds and many legume seeds. After understanding the reasons, if we can meet the seed germination conditions when the seeds germinate, will the germination rate of the seeds not be greatly improved? Now, experts have developed such equipment. We call it the smart seed germination room, that is, the seed germination room. It adopts an intelligent microcomputer artificial climate room control system with FPID control mode, which is used for seed germination experiments and controls factors such as temperature, humidity, light, and time. It controls the ambient temperature, setting temperature of the growth chamber, light intensity, and dehumidification. Conditions and other factors affecting the temperature of the growth chamber are all involved in the temperature FPID adjustment, so that the quality of the temperature control is almost perfect, giving the seed ideal germination environment, and increasing the seed germination rate. Special gear clock including table and Wall Gear Clock. For the Desk Gear Clock, there is alarm and time function gear clock. For the wall gear clock, we have different sizes of wall gear clock, 14 inch small wall gear clock and the 20 inch super large gear clock. You can see the moving of every gear. That's interesting. Like you are seeing the time moving. Wood Gear Grandfather Clock,Antique Clock Gears Images,Antique Clock Gears For Sale,Clock With Moving Gears Guangzhou Huan Yu Clocking Technologies Co., Ltd. , https://www.mk-times.com