There are many factors affecting the germination of corn seed, such as corn seed maturity, corn variety, moisture content, temperature and so on, all have a certain impact. The germination of seeds is the most basic step in plant growth. Therefore, controlling the factors for seed germination has a significant impact on increasing the seed germination rate. The use of seed germination boxes has provided useful help for seed germination experiments. In addition, this article mainly discusses several factors that affect the germination of corn seeds.
The soft curtain quick cold storage door has a simple design and is designed with a heating antifreeze device to ensure smooth and efficient operation of the product in a low temperature working environment. The structure incorporates the function design of collision avoidance recovery. When the door body is accidentally impacted, it deviates from the track and automatically repairs the return position during the ascent process. This structure not only facilitates the safe and smooth operation of the door body, but also operates more than 150,000 times a year without failure. It extends the life of the product while reducing component replacement and maintenance costs.
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Maturity: Maize seeds of different maturity have a great difference in germination ability. Seeds in the final stage of milk ripening must be dried for 2 weeks. The seeds in the wax ripening stage must have a higher germination ability after drying for 1 week. This is because The immature fresh-seed enzyme system is not completely formed. Varieties: Under the same conditions, the germination ability of different maize varieties is different. During germination, the ability to resist low temperature is also different. Early germinating type corn encounters low temperature of 0°C for 1 d during germination, and the germination rate only decreases by 5%. However, the germination rate of late-maturing corn-dentin corn decreased by 16.7%. Early, middle, and late-maturing hybrids were sown at the same time in the early spring, and early-maturing was 2–3 days earlier than mid-maturity or late-maturing. Moisture: Maize seed from absorption to germination, need to absorb 35% to 37% of the air-dried seed weight of water, if the soil moisture is too low, the seed does not absorb the required water, the seed can not germinate. Under field conditions, when the soil water content is 60%~80%, it germinates rapidly. When the moisture content in the 0-30cm soil layer on the leaching black soil is 16%~18%, the germination is good, which is lower than 13%~15%. Severe lack of seedlings. Excessive soil moisture at the time of sowing or excessive rainfall due to rain after sowing (the soil moisture content can be monitored by an agricultural environmental monitoring station.) On the one hand, the seed's respiratory metabolism is slow, affecting the emergence, and on the other hand, the seed swell rate is too high. Caused by the cell membrane can not be repaired in a timely manner and other damage, so that some molecules inside the cell such as soluble sugar, organic acids, amino acids, low molecular weight protein peptide chain and inorganic ions exudate outwards, the ability of seed germination into seedlings decreased, which is usually Swelling damage of the seed. The seeds that did not germinate were found, and the seed coats were often found to have ruptured and were infected by fungi and became moldy and rot. Temperature: Most maize seed germination temperature is 7 ~ 8 °C, there are also seeds that can germinate at 5.5 °C, germination temperature is 25 ~ 35 °C, more than 40 °C to prevent germination. The precision seed germination box can set the ambient temperature of the corn seed germination spontaneously. After the planting or sowing, they encountered continuous low-temperature weather. For example, some farmers in the Simaiba temperate zone in Heilongjiang province began planting after April 10th. The activity of seed enzymes was reduced, the respiration was weakened, seeds germinated slowly, and the soil was left for a long time. Powdered seed rotten species. In addition, spring sowing of corn in the low temperature of 10 ~ 15 °C in case of rain, soil moisture, so that the seeds in a short time cold water absorption and absorption of cold damage, resulting in seed can not be normal germination into seedlings. After normal seeds are chilled and chilled, they cannot germinate even if they are given appropriate conditions.